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Markevich GN, Pavlova NS, Kapitanova DV, Esin EV. Bone calcification rate as a factor of craniofacial transformations in salmonid fish: Insights from an experiment with hormonal treatment of calcium metabolism. Evol Dev 2023; 25:274-288. [PMID: 37540043 DOI: 10.1111/ede.12453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 08/05/2023]
Abstract
Adaptation to different environments can be achieved by physiological shifts throughout development. Hormonal regulators shape the physiological and morphological traits of the evolving animals making them fit for the particular ecological surroundings. We hypothesized that the artificially induced hypersynthesis of calcitonin and parathyroid hormone mutually influencing calcium metabolism could affect bone formation during early ontogeny in fish imitating the heterochrony in craniofacial ossification in natural adaptive morphs. Conducting an experiment, we found that the long-standing treatment of salmonid juveniles with high doses of both hormones irreversibly shifts the corresponding hormone status for a period well beyond the time scale for total degradation of the injected hormone. The hormones program the ossification of the jaw suspension bones and neurocranial elements in a specific manner affecting the jaws position and pharingo-branchial area stretching. These morphological shifts resemble the adaptive variants found in sympatric pelagic and demersal morphs of salmonids. We conclude that solitary deviations in the regulators of calcium metabolism could determine functional morphological traits via transformations in skeletal development.
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Affiliation(s)
- Grigorii N Markevich
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
- Scientific Department, Kronotsky Nature Reserve, Yelizovo, Kamchatka Region, Russia
| | - Nadezhda S Pavlova
- Department of Human and Animal Physiology, Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Daria V Kapitanova
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
- Lab of Postnatal Ontogenesis, N.K. Koltsov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - Evgeny V Esin
- Lab of Lower Vertabrate Ecology, Lab of Evolutionary Morphology, A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Moscow, Russia
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Dalsgaard J, Ekmann KS, Jensen MD, Pedersen PB. Reducing phosphorus emissions from net cage fish farming by diet manipulation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 334:117445. [PMID: 36774900 DOI: 10.1016/j.jenvman.2023.117445] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/15/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
To alleviate the environmental impact of net cage fish farming in terms of phosphorous (P) emissions to the Baltic Sea, this study aimed at developing and documenting a diet concept for large rainbow trout (Oncorhynchus mykiss) in brackish water (∼15 ppt) that minimizes the excretion of dissolved P and reduces the excretion of particulate P without compromising fish performance and gonadal development. This was to be achieved by reducing the total dietary P content and matching dietary bioavailable P concentrations to fish requirements using whole-body P concentration and expected individual raw material digestibility as criteria. The diet concept was firstly tested in a laboratory mass-balance study with all female rainbow trout (∼1100 g fish-1) fed three commercial-like low-P diets with 0.74% total P, 0.67% total P, or 0.62% total P plus phytase. Comparing the highest and lowest P diets showed that it was possible to reduce the excretion of dissolved P by 87% to 0.08 g dissolved P kg-1 biomass gain without compromising P requirements and fish performance. To verify the concept on commercial scale, an 8 mm P-reduced test diet with 0.63% total P and targeted a bioavailable P concentration of 0.41% by adding phytase was tested against a commercial control diet with 0.81% total P, feeding each diet to four commercial net cages for 5½ months. Harvest data along with ovary and whole-body P analysis confirmed that there were no performance differences between treatment groups, further sustaining that the specific P discharge may be reduced from an estimated 5.1 to 3.2 kg P t-1 fish produced by minimizing the total dietary P content while tailoring the bioavailable P concentration to match fish requirements. Applying the diet concept to the current (2020) Baltic salmonid production could theoretically reduce P emissions by 147 t yr-1 including 79 t dissolved P and 68 t particulate P.
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Affiliation(s)
- Johanne Dalsgaard
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, Willemoesvej 2, DK-9850 Hirtshals, Denmark.
| | - Kim Schön Ekmann
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, Willemoesvej 2, DK-9850 Hirtshals, Denmark; BioMar A/S, Mylius Erichsensvej 35, DK-7330 Brande, Denmark.
| | | | - Per Bovbjerg Pedersen
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, Willemoesvej 2, DK-9850 Hirtshals, Denmark.
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Elamawy A, Hegazi E, Nassef E, Abouzed TK, Zaki AG, Ismail T. Dietary inclusion of nano-phosphorus improves growth performance, carcass quality, and growth-related traits of Nile tilapia (Oreochromis niloticus) and alleviates water phosphorus residues. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:529-542. [PMID: 37138041 DOI: 10.1007/s10695-023-01199-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/18/2023] [Indexed: 05/05/2023]
Abstract
Supplementation of phosphorus nanoparticles is a promising strategy to reduce water pollution, improve phosphorus concentration in fish diet, and provide better production quality. We used 300 fingerlings of Nile tilapia that were randomly distributed into 3 groups; each one was attributed to 5 replicates of 20 fish per aquarium with initial weight (gm) (156 ± 1.25). The first diet contained traditional Di-calcium phosphate (D-group), the second supplemented with phosphorus nanoparticles in a dose equal to the previous conventional one (N-D group), and the last one included with phosphorus nanoparticles with the half dose of the conventional phosphorus group (1/2 N-D group). After 3 months of feeding, the N-D group showed the best growth performance including its feed conversion ratio (FCR), feed intake (FI), or body weight gain (BWG). Furthermore, the growth-related gene expression findings considering growth hormone receptor (GHR) and insulin-like growth factor-1 (IGF-1) were upregulated as well. Moreover, whole body chemical composition revealed higher Fe, Zn, P, and crude protein level in the N-D group than the other two groups. Lipoprotein lipase (LPL) and fatty acid synthetase (FAS) mRNA expression showed a significant increase in 1/2 N-D and N-D groups compared with the control group. To sum up, using of nano-phosphorus particles improved the growth rate and immunity response of Nile tilapia, besides decreasing water pollution.
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Affiliation(s)
- Anwar Elamawy
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh, Egypt
| | - Elsayed Hegazi
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh, Egypt
| | - Eldsokey Nassef
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh, Egypt
| | - Tarek K Abouzed
- Department of Biochemistry, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Abeer G Zaki
- Biotechnology Department, Animal Health Research Institute, Giza, Egypt
| | - Taha Ismail
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh, Egypt.
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Song Z, Li P, Hu S, Liu C, Hao T, Han X. Influence of Dietary Phosphorus on the Growth, Feed Utilization, Proximate Composition, Intestinal Enzymes, and Oxidation Resistance of Sea Cucumber Apostichopus japonicus. AQUACULTURE NUTRITION 2023; 2023:2266191. [PMID: 37124880 PMCID: PMC10139806 DOI: 10.1155/2023/2266191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 05/03/2023]
Abstract
Six experimental diets (crude protein 12.58%, crude fat 1.93%, and total energy 10.72 kJ/kg) containing 0.24%, 0.37%, 0.51%, 0.62%, 0.77%, and 0.89% phosphorus were formulated to evaluate dietary phosphorus requirement for sea cucumber Apostichopus japonicus. The feeding trial was conducted in 18 fiberglass tanks (220 L) for 63 days. Each diet was randomly assigned to triplicate tanks of 50 sea cucumbers (9.99 g) and fed once daily. With the increase of dietary phosphorus level, weight gain (WG), specific growth rate (SGR), daily feed intake (DFI), feces production ratio, the activities of amylase, alkaline phosphatase, phosphofructokinase, succinate dehydrogenase, and glutathione peroxidase as well as the contents of glutathione and glutathione oxidized significantly increased and then decreased afterwards (P < 0.05). A. japonicus fed diet with 0.63%, 0.63%, and 0.55% dietary phosphorus was estimated to yield the highest WG (11.39 g), SGR (1.09%/d), and DFI (2.55%/d) according to the quadratic regression analysis of WG, SGR, and DFI against dietary phosphorus level, respectively. The apparent digestibility of dry material and energy followed an opposite tendency. Feed efficiency, the contents of whole-body phosphorus, initially increased and then plateaued, fitting piecewise-linear models with breakpoint at 0.57% and 0.55% dietary phosphorus. Daily phosphorus intake, pyruvate kinase activity, and the ratio of glutathione and glutathione oxidized increased (P < 0.05) but the apparent digestibility of phosphorus, the activities of alkaline protease, aspartate transaminase, and phosphoenolpyruvate carboxykinase decreased (P < 0.05), responding to the increasing dietary phosphorus. Considering the present results, the optimal dietary phosphorus for A. japonicus is 0.57-0.63%.
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Affiliation(s)
- Zhidong Song
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Yantai 264006, China
| | - Peiyu Li
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Yantai 264006, China
| | - Shunxin Hu
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Yantai 264006, China
| | - Caili Liu
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Tiantian Hao
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Xiaozhao Han
- Shanghai Ocean University, Shanghai 201306, China
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Phosphorus Absorption and Excretion in Hybrid Sturgeon (Huso dauricus♀ X Acipenser schrenckii♂) Intubated with Different Ca/P Ratios. FISHES 2022. [DOI: 10.3390/fishes7030138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To study the effect of Ca/P ratio on the P and Ca absorption and excretion in hybrid sturgeon (Huso dauricus♀ X Acipenser schrenckii♂), five groups of fish were intubated with 100 mg P·kg−1 BW with the Ca/P ratios of 0:1, 0.25:1, 0.5:1, 1:1, and 2:1. Plasma P concentrations were significantly elevated at Ca/P ratios below 2:1, and the highest value was obtained at Ca/P ratio of 0.5:1. Plasma Ca content was significantly increased at the highest Ca/P ratio. Urine P excretion rate in the fish intubated with Ca/P ratio of 0.5:1 was significantly higher than that of the groups with Ca/P ratios of 0:1 and 2:1. The highest urea excretion rates were observed at Ca/P ratio of 0.5:1 and 1:1. The total P excretion at 48 h post intubation reached about 30 mg·kg−1 BW, which was recorded for the group with Ca/P ratio of 0.5:1. The present study showed that P absorption efficiency was improved in hybrid sturgeon at Ca/P ratio of 0.5:1, indicating that P inclusion level in sturgeon feed can be further optimized to reduce dietary P input and lower the excessive undigested P discharge into the rearing water.
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Effects of dietary phosphorus level on growth, body composition, liver histology and lipid metabolism of spotted seabass (Lateolabrax maculatus) reared in freshwater. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wang L, Fan Z, Zhang Y, Wu D, Li J, Xu Q. Effect of phosphorus on growth performance, intestinal tight junctions, Nrf2 signaling pathway and immune response of juvenile mirror carp (Cyprinus carpio) fed different α-ketoglutarate levels. FISH & SHELLFISH IMMUNOLOGY 2022; 120:271-279. [PMID: 34863945 DOI: 10.1016/j.fsi.2021.11.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 06/13/2023]
Abstract
Previous research has shown that dietary α-ketoglutarate (AKG) supplementation can promote growth performance, phosphorus metabolism, and skeletal development of juvenile mirror carp (Cyprinus carpio) fed low phosphorous diets. In the current study, we tested the hypothesis that 1% AKG dietary supplementation reduces the dietary phosphorus requirements of juvenile mirror carp. A total of 12 experimental isoproteic and isolipidic diets containing available phosphorus levels of 0.21%, 0.38%, 0.55%, 0.72%, 0.89%, and 1.07% dry matter with either 0 or 1% AKG supplementation were used in the study. A total of 1080 juvenile fish of similar initial weight (0.90 ± 0.03 g) were selected and randomly assigned to 36 tanks. There were three replicates for each experimental group, with a density of 30 fish per tank. Fish were fed to satiation for 8 weeks. The results indicated that fish fed the diet supplemented with 1% AKG showed a significant increase in final body weight (FBW), weight gain rate (WGR), feed intake (FI) and phosphorus intake (PI) compared to the diet without AKG (P < 0.05). FBW and WGR increased significantly with increasing available phosphorus levels from 0.21% to 0.89% (P < 0.05). The mRNA expression of ZO-1, claudin 11, and occludin was significantly increased by dietary AKG and phosphorus (P < 0.05). The mRNA expression of Nrf2, GPx1a, and CAT in the Nrf2 signaling pathway was significantly increased by dietary AKG and phosphorus (P < 0.05). The expression levels of IL-10 and TGF-β2 were significantly increased by dietary AKG and phosphorus, but the expression levels of IL-1β, IL-8, IL-10, TNF-a and NF-κB were significantly decreased with dietary AKG and phosphorus supplementation (P < 0.05). Based on second-order polynomial regression analysis of WGR against dietary phosphorus levels, the optimal dietary phosphorus level was found to be 0.79% of dry feed for juvenile mirror carp fed a diet with 1% AKG supplementation and 0.93% of dry feed without AKG supplementation. This study confirmed that AKG supplementation can reduce the phosphorus requirements of juvenile mirror carp by promoting growth performance, intestinal tight junctions, Nrf2 signaling pathways and immune response.
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Affiliation(s)
- Liansheng Wang
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China.
| | - Ze Fan
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China
| | - Yuanyuan Zhang
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China
| | - Di Wu
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China
| | - Jinnan Li
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China
| | - Qiyou Xu
- Key Laboratory of Aquatic Animal Diseases and Immune Technology of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, PR China; School of Life Science, Huzhou University, Huzhou, 313000, PR China
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Pan YL, Rodrigues MJ, Pereira CG, Engrola S, Colen R, Mansinhos I, Romano A, Andrade PB, Fernandes F, Custódio L. Exploring the Biotechnological Value of Marine Invertebrates: A Closer Look at the Biochemical and Antioxidant Properties of Sabella spallanzanii and Microcosmus squamiger. Animals (Basel) 2021; 11:3557. [PMID: 34944333 PMCID: PMC8697903 DOI: 10.3390/ani11123557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/26/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022] Open
Abstract
Sabella spallanzanii and Microcosmus squamiger were profiled for proximate composition, minerals, amino acids, fatty acids (FA), carotenoids, radical scavenging activity on the 2,2-diphenyl-1- picrylhydrazyl (DPPH) radical, oxygen radical absorbance capacity (ORAC) and iron and copper chelating properties. Microcosmus squamiger had the highest level of moisture and crude protein, S. spallanzanii was enriched in crude fat and ash. Both species had similar levels of carbohydrates and energy. There was a prevalence of arginine and glycine in S. spallanzanii, and of taurine in M. squamiger. The most abundant minerals in both species were Na, Ca, and K. The methanol extract of S. spallanzanii had metal chelating properties towards copper and iron, while the methanol extract of M. squamiger was able to chelate copper. M. squamiger extracts had similar ORAC values. Fucoxanthinol and fucoxanthin were the major carotenoids in the M. squamiger dichloromethane extract. Saturated FA were more abundant than unsaturated ones in methanol extracts, and unsaturated FA prevailed in the dichloromethane extracts. Palmitic acid was the predominant FA in methanol extracts, whereas eicosapentaenoic (EPA) and dihomo-γ-linolenic acids were the major compounds in dichloromethane extracts. Low n-6/n-3 ratios were obtained. Our results suggests that both species could be explored as sources of bioactive ingredients with multiple applications.
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Affiliation(s)
- Yu-Lun Pan
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
| | - Maria João Rodrigues
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
| | - Catarina G. Pereira
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
| | - Sofia Engrola
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
| | - Rita Colen
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
| | - Inês Mansinhos
- MED–Mediterranean Institute for Agriculture, Environment and Development, Faculty of Sciences and Technology, Campus de Gambelas, Ed. 8, University of Algarve, 8005-139 Faro, Portugal; (I.M.); (A.R.)
| | - Anabela Romano
- MED–Mediterranean Institute for Agriculture, Environment and Development, Faculty of Sciences and Technology, Campus de Gambelas, Ed. 8, University of Algarve, 8005-139 Faro, Portugal; (I.M.); (A.R.)
| | - Paula B. Andrade
- REQUIMTE/LAQV: Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal; (P.B.A.); (F.F.)
| | - Fátima Fernandes
- REQUIMTE/LAQV: Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal; (P.B.A.); (F.F.)
| | - Luísa Custódio
- Centre of Marine Sciences (CCMAR), Faculty of Sciences and Technology, Campus of Gambelas, Ed. 7, University of Algarve, 8005-139 Faro, Portugal; (Y.-L.P.); (M.J.R.); (C.G.P.); (S.E.); (R.C.)
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Lall SP, Kaushik SJ. Nutrition and Metabolism of Minerals in Fish. Animals (Basel) 2021; 11:ani11092711. [PMID: 34573676 PMCID: PMC8466162 DOI: 10.3390/ani11092711] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/06/2021] [Accepted: 09/13/2021] [Indexed: 12/26/2022] Open
Abstract
Simple Summary Our aim is to introduce the mineral nutrition of fish and explain the complexity of determining requirements for these elements, which are absorbed and excreted by the fish into the surrounding water. To date, only the requirements for nine minerals have been investigated. The review is focused on the absorption and the dietary factors that reduce their absorption from feed ingredients of plant and animal origin. Some diseases, such as cataracts, anemia and bone deformity, have been linked to dietary deficiency of minerals. Abstract Aquatic animals have unique physiological mechanisms to absorb and retain minerals from their diets and water. Research and development in the area of mineral nutrition of farmed fish and crustaceans have been relatively slow and major gaps exist in the knowledge of trace element requirements, physiological functions and bioavailability from feed ingredients. Quantitative dietary requirements have been reported for three macroelements (calcium, phosphorus and magnesium) and six trace minerals (zinc, iron, copper, manganese, iodine and selenium) for selected fish species. Mineral deficiency signs in fish include reduced bone mineralization, anorexia, lens cataracts (zinc), skeletal deformities (phosphorus, magnesium, zinc), fin erosion (copper, zinc), nephrocalcinosis (magnesium deficiency, selenium toxicity), thyroid hyperplasia (iodine), muscular dystrophy (selenium) and hypochromic microcytic anemia (iron). An excessive intake of minerals from either diet or gill uptake causes toxicity and therefore a fine balance between mineral deficiency and toxicity is vital for aquatic organisms to maintain their homeostasis, either through increased absorption or excretion. Release of minerals from uneaten or undigested feed and from urinary excretion can cause eutrophication of natural waters, which requires additional consideration in feed formulation. The current knowledge in mineral nutrition of fish is briefly reviewed.
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Affiliation(s)
- Santosh P. Lall
- National Research Council of Canada, Halifax, NS B3H 3Z1, Canada
- Correspondence: (S.P.L.); (S.J.K.)
| | - Sadasivam J. Kaushik
- Retd. INRA, 64310 St Pée sur Nivelle, France
- Ecoaqua Institute, Universidad de Las Palmas de Gran Canaria, 35214 Las Palmas, Spain
- Correspondence: (S.P.L.); (S.J.K.)
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Basto A, Calduch-Giner J, Oliveira B, Petit L, Sá T, Maia MRG, Fonseca SC, Matos E, Pérez-Sánchez J, Valente LMP. The Use of Defatted Tenebrio molitor Larvae Meal as a Main Protein Source Is Supported in European Sea Bass ( Dicentrarchus labrax) by Data on Growth Performance, Lipid Metabolism, and Flesh Quality. Front Physiol 2021; 12:659567. [PMID: 33967831 PMCID: PMC8104126 DOI: 10.3389/fphys.2021.659567] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/17/2021] [Indexed: 12/17/2022] Open
Abstract
Objective This study aims to determine the maximal inclusion level of defatted (d-) Tenebrio molitor larvae meal (TM) able to replace dietary fishmeal (FM) without compromising growth performance, general metabolism, and flesh quality traits in European sea bass, and to evaluate the major underlying physiological mechanisms. Materials and Methods Fish (55 ± 2 g) were fed with diets containing increasing levels of dTM: 0, 40, 80 and 100% (CTRL, TM40, TM80, and TM100, respectively) to replace FM. After 10 weeks of feeding, the growth performance, nutrient and energy balance, intestinal integrity, plasma metabolites and the expression of genes related to growth and nutrient metabolism, in liver and muscle were determined. The fatty acids (FA) profile, textural properties and color were also evaluated in muscle. Results Protein and lipids digestibility remained unaltered up to 80% dTM inclusion. Growth performance parameters were similar among dietary treatments. The dTM inclusion increased the hepatosomatic index in fish fed TM100. Muscle eicosapentaenoic acid, docosahexaenoic acid and n-3 long-chain polyunsaturated FA levels were maintained up to 80% dTM inclusion, but total cholesterol and non-esterified FA increased with dietary dTM inclusion. In liver, the expression of elongation of very long-chain FA protein 6 (elovl6) and FA desaturase 2 (fads2) did not change in fish fed TM40 and TM80, but elovl6 decreased whilst fads2 increased in fish fed TM100 when compared to those fed CTRL. The expression of cholesterol 7 alpha-monooxygenase (cyp7a1) decreased with dietary dTM inclusion. In muscle, the expression of myoblast determination protein-2 (myod2) decreased in fish fed TM80 and TM100. Conclusion It is feasible to substitute dietary FM by dTM up to 80% in European sea bass without detrimental effects on nutrient digestibility, growth performance and associated genetic pathways, whilst assuring fillet nutritional value for human consumption.
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Affiliation(s)
- Ana Basto
- ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
| | - Josep Calduch-Giner
- IATS - CSIC, Instituto de Acuicultura Torre de la Sal, Castellón de la Plana, Spain
| | - Beatriz Oliveira
- ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
| | - Lisa Petit
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
| | - Tiago Sá
- ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
| | - Margarida R G Maia
- ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Susana C Fonseca
- GreenUPorto, DGAOT, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Elisabete Matos
- SORGAL - Sociedade de Óleos e Rações, S.A., S. João de Ovar, Portugal
| | - Jaume Pérez-Sánchez
- IATS - CSIC, Instituto de Acuicultura Torre de la Sal, Castellón de la Plana, Spain
| | - Luisa M P Valente
- ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
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Yang Q, Liang H, Maulu S, Ge X, Ren M, Xie J, Xi B. Dietary phosphorus affects growth, glucolipid metabolism, antioxidant activity and immune status of juvenile blunt snout bream (Megalobrama amblycephala). Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.114896] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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Fjelldal PG, Madaro A, Hvas M, Stien LH, Oppedal F, Fraser TW. Skeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture. JOURNAL OF FISH BIOLOGY 2021; 98:1049-1058. [PMID: 32243571 DOI: 10.1111/jfb.14337] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 03/09/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
As a first attempt to assess bone health in cleaner fish production, wild and cultured ballan wrasse Labrus bergylta and lumpfish Cyclopterus lumpus were examined by radiology. In C. lumpus, wild fish (57%) had more vertebra deformities (≥1 deformed vertebrae) than cultured fish (2-16%). One wild C. lumpus had lordosis and another was missing the tail fin. In L. bergylta, wild fish (11%) had fewer vertebra deformities than cultured individuals (78-91%). Among the cultured L. bergylta, 17-53% of the fish had severe vertebra deformities (≥6 deformed vertebrae) with two predominate sites of location, one between vertebra 4 and 10 (S1) in the trunk, and one between 19 and 26 (S2) in the tail. Fusions dominated S1, while compressions dominated S2. Although wild L. bergylta had a low vertebra deformity level, 83% had calluses and 14% had fractures in haemal/neural spines and/or ribs. The site-specific appearance and pathology of fracture and callus in wild L. bergylta suggests these are induced by chronic mechanical stress, and a possible pathogenesis for fish hyperostosis is presented based on this notion. In conclusion, good bone health was documented in cultured C. lumpus, but cultured L. bergylta suffered poor bone health. How this affects survival, growth, swimming abilities and welfare in cultured wrasse should be further investigated. SIGNIFICANCE STATEMENT: Skeletal deformities were studied in ballan wrasse and lumpfish of both wild and cultured origin for the first time to identify potential welfare issues when deploying them as cleaner fish in salmon sea cages. While cultured lumpfish showed good bone health, cultured wrasse had a high occurrence of vertebra deformities, which is expected to impact lice eating efficiency and animal welfare negatively. These deformities are most likely induced early in development.
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Affiliation(s)
| | | | - Malthe Hvas
- Matre Research Station, Institute of Marine Research, Matredal, Norway
| | - Lars Helge Stien
- Matre Research Station, Institute of Marine Research, Matredal, Norway
| | - Frode Oppedal
- Matre Research Station, Institute of Marine Research, Matredal, Norway
| | - Thomas Wk Fraser
- Matre Research Station, Institute of Marine Research, Matredal, Norway
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13
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Wang P, Li X, Xu Z, Ji D, He M, Dang J, Leng XJ. The digestible phosphorus requirement in practical diet for largemouth bass (Micropterus salmoides) based on growth and feed utilization. AQUACULTURE AND FISHERIES 2021. [DOI: 10.1016/j.aaf.2020.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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14
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Griboff J, Wunderlin DA, Horacek M, Monferrán MV. Seasonal variations on trace element bioaccumulation and trophic transfer along a freshwater food chain in Argentina. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40664-40678. [PMID: 32671707 DOI: 10.1007/s11356-020-10068-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Río Tercero Reservoir (RTR) is the largest artificial reservoir in the province of Córdoba (Argentina). Water, sediment, plankton, shrimp (Palaemonetes argentinus), and fish (Odontesthes bonariensis) were collected during the wet season (WS) and dry season (DS) from this reservoir. Concentrations of Ag, Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, P, Pb, Se, U, and Zn were determined to investigate their respective bioaccumulation pattern and trophic transfer in the food chain. Results showed that their concentrations in water were rather low except Pb, which exceed the limits considered as hazardous for aquatic life. The enrichment factor (EF) in sediments showed that most of the element were derived from anthropogenic sources. Furthermore, the bioaccumulation factor (BAF) determined that the elements undergo bioaccumulation, especially in organisms such as plankton. The invertebrates were characterized by the highest BAF for Cu, P, and Zn in both seasons; Ag, As, and Hg during WS; and Se during DS. Fish muscle registered the highest BAF for Hg (DS) and Se (WS). A significant decrease in Al, As, Cd, Cr, Cu (DS) Fe, Mn, Ni, Pb, Se, U, and Zn (DS) concentrations through the trophic chain was observed, indicating biodilution. Some notable exceptions were found as Cu (WS), Hg (DS), and P (both season) that showed biomagnification. Further studies are needed to establish differential behavior with different species and pollutant, particularly when the potential transfer is to edible organisms.
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Affiliation(s)
- Julieta Griboff
- ICYTAC- Instituto de Ciencia y Tecnología de Alimentos Córdoba, CONICET and Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Bv. Dr. Juan Filloy s/n, Ciudad Universitaria, 5000, Córdoba, Argentina
- CIBICI, Centro de Inmunología y Bioquímica Clínica, CONICET and Depto. Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende esq. Haya de La Torre, Cdad, Universitaria, 5000, Córdoba, Argentina
| | - Daniel A Wunderlin
- ICYTAC- Instituto de Ciencia y Tecnología de Alimentos Córdoba, CONICET and Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Bv. Dr. Juan Filloy s/n, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Micha Horacek
- BLT Wieselburg, HBLFA Francisco-Josephinum, Rottenhauserstrasse, 1, 3250, Wieselburg, Austria
- Institute of Lithospheric Research, Vienna University, Althanstr. 14, 1090, Vienna, Austria
| | - Magdalena V Monferrán
- ICYTAC- Instituto de Ciencia y Tecnología de Alimentos Córdoba, CONICET and Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Bv. Dr. Juan Filloy s/n, Ciudad Universitaria, 5000, Córdoba, Argentina.
- CIBICI, Centro de Inmunología y Bioquímica Clínica, CONICET and Depto. Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Medina Allende esq. Haya de La Torre, Cdad, Universitaria, 5000, Córdoba, Argentina.
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15
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Lee SH, You HS, Kang HG, Kang SS, Hyun SH. Association between Altered Blood Parameters and Gut Microbiota after Synbiotic Intake in Healthy, Elderly Korean Women. Nutrients 2020; 12:nu12103112. [PMID: 33053824 PMCID: PMC7650560 DOI: 10.3390/nu12103112] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/25/2020] [Accepted: 10/09/2020] [Indexed: 12/20/2022] Open
Abstract
Synbiotics intake can alter the composition of intestinal microbes beneficially. We aimed to detect the changes in the intestinal microbiomes of 37 healthy elderly Korean women after the intake of a synbiotic drink. This was a longitudinal study controlled with a temporal series, including a control period of 3 weeks before intake, synbiotic intake for 3 weeks, and a washout period of 3 weeks. Fecal microbiota composition was analyzed by sequencing the V3-V4 hypervariable regions of 16S rRNA. Physical fecal activity increased with improvement in fecal shape. Thirty intestinal bacterial taxa were observed to change only after the intake period. In particular, Ellagibacter appeared only after ingestion. In addition, the abundance of Terrisporobacter showed a positive correlation with C-reactive protein, triglyceride. Lachnospiraceae_uc, Eubacterium_g5, and Blautia had a positive correlation with creatinine, whereas PAC001100_g had a negative correlation with creatinine. Short-term (3 weeks) intake of symbiotic organisms changes the composition of the gut microbiota in healthy elderly Korean women.
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Affiliation(s)
- Song Hee Lee
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea; (S.H.L.); (H.S.Y.)
- Department of Senior Healthcare, BK21 Plus Program, Graduate School, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea;
| | - Hee Sang You
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea; (S.H.L.); (H.S.Y.)
- Department of Senior Healthcare, BK21 Plus Program, Graduate School, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea;
| | - Hee-Gyoo Kang
- Department of Senior Healthcare, BK21 Plus Program, Graduate School, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea;
- Department of Biomedical Laboratory Science, College of Health Sciences, Eulji University, Seongnam 13135, Korea
| | - Sang Sun Kang
- Department of Biology Education, Chungbuk National University, Chungdae-ro 1, Seowon-gu, Cheongju 28644, Korea;
| | - Sung Hee Hyun
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea; (S.H.L.); (H.S.Y.)
- Department of Senior Healthcare, BK21 Plus Program, Graduate School, Eulji University, 77 Gyeryong-ro, 771 Beon-gil, Jung-gu, Daejeon 34824, Korea;
- Correspondence: ; Tel.: +82-10-9412-8853
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Sambraus F, Hansen T, Daae BS, Thorsen A, Sandvik R, Stien LH, Fraser TWK, Fjelldal PG. Triploid Atlantic salmon Salmo salar have a higher dietary phosphorus requirement for bone mineralization during early development. JOURNAL OF FISH BIOLOGY 2020; 97:137-147. [PMID: 32242933 DOI: 10.1111/jfb.14338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
The effect of a dietary phosphorus regime in freshwater on vertebra bone mineralization was assessed in diploid and triploid Atlantic salmon, Salmo salar. Fish were fed either a low phosphorus (LP) diet containing 10.5 g kg-1 total phosphorus or a normal phosphorus (NP) diet containing 17.4 g kg-1 total phosphorus from ∼3 to ∼65 g (day 126) in body weight. Two further groups were fed the NP diet from ∼3 g in body weight, but were then switched to the LP diet after 38 (∼10 g in body weight) or 77 (∼30 g in body weight) days. Growth, vertebral ash content (% ash) and radiologically detectable vertebra pathologies were assessed. Triploids were initially smaller than diploids, and again on day 77, but there was no ploidy effect on days 38 or 126. Vertebral ash content increased with increasing body size and those fish fed the NP diet had higher vertebral ash content than those groups fed the LP diet during the intervening time period, but this diet effect became less apparent as fish grew, with all groups having relatively equal vertebral ash content at termination. In general, triploids had lower vertebral ash content than diploids on day 38 and this was most evident in the group fed the LP diet. On day 77, those triploids fed the LP diet during the intervening time period had lower vertebral ash content than diploids. At termination on day 126, the triploids had the same vertebral ash content as diploids, irrespective of diet. There was a ploidy × diet interaction on vertebral deformities, with triploids having higher prevalences of fish with ≥1 deformed vertebra in all dietary groups except continuous NP. In conclusion, between days 0 and 77 (3-30 g body size), triploids required more dietary phosphorus than diploids in order to maintain similar vertebral ash content. A possible link between phosphorus feeding history and phosphorus demand is also discussed.
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Affiliation(s)
- Florian Sambraus
- Institute of Marine Research, Reproduction and Developmental Biology Group, Matre Aquaculture Research Station, Matredal, Norway
| | - Tom Hansen
- Institute of Marine Research, Reproduction and Developmental Biology Group, Matre Aquaculture Research Station, Matredal, Norway
| | - Britt S Daae
- Institute of Marine Research, Reproduction and Developmental Biology Group, Matre Aquaculture Research Station, Matredal, Norway
| | - Anders Thorsen
- Institute of Marine Research, Reproduction and Developmental Biology Group, Bergen, Norway
| | | | - Lars H Stien
- Institute of Marine Research, Fish Welfare Group, Matre Aquaculture Research Station, Matredal, Norway
| | - Thomas W K Fraser
- Institute of Marine Research, Reproduction and Developmental Biology Group, Matre Aquaculture Research Station, Matredal, Norway
| | - Per Gunnar Fjelldal
- Institute of Marine Research, Reproduction and Developmental Biology Group, Matre Aquaculture Research Station, Matredal, Norway
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17
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Trangerud C, Bjørgen H, Koppang EO, Grøntvedt RN, Skogmo HK, Ottesen N, Kvellestad A. Vertebral column deformity with curved cross-stitch vertebrae in Norwegian seawater-farmed Atlantic salmon, Salmo salar L. JOURNAL OF FISH DISEASES 2020; 43:379-389. [PMID: 31970816 DOI: 10.1111/jfd.13136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/27/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
Pathological changes in the vertebral column of farmed Atlantic salmon in Norway have been reported since the 1990s. Based on the characteristic radiographic findings, we here present a vertebral column deformity named "curved cross-stitch vertebrae" that mainly affects the middle aspect of the vertebral column. Sixty fish, from the west/northwest coast of mid-Norway, were sampled at slaughter and examined by radiography, computed tomography (CT), necropsy, macrophotography, and histology. The vertebral deformities were radiographically graded as mild, moderate, or marked. The main differences between these grades of changes were defined by increased curving of the peripheries of endplates, reduced intervertebral spaces, and vertical displacement of the vertebrae. The curved rims of endplates were located peripheral to a continuous and approximately circular borderline. The CT studies revealed small, multifocal, hypo-attenuating, round to crescent-shaped areas in the notochord, compatible with the presence of gas. Additionally, histology revealed that the axial parts of endplates had circular zones with perforations, through which either notochordal tissue prolapsed into the vertebrae or vascularized fibrochondroid proliferations extended from the vertebrae into the notochord. Inflammation was present in many vertebral bodies. To the best of our knowledge, this is the first report of gas in the notochord of fish.
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Affiliation(s)
- Cathrine Trangerud
- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Håvard Bjørgen
- Section of Anatomy, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Erling Olaf Koppang
- Section of Anatomy, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | | | - Hege Kippenes Skogmo
- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Nina Ottesen
- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Agnar Kvellestad
- Section of Anatomy, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
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18
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PRELIMINARY RADIOGRAPHIC OBSERVATIONS OF VERTEBRAL CHANGES IN DISCUS ( SYMPHYSODON DISCUS). J Zoo Wildl Med 2018; 49:1016-1020. [PMID: 30592909 DOI: 10.1638/2017-0236.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Discus ( Symphysodon discus) maintained in aquaria are held in a wide range of water parameters and subjected to many different feeding regimes. In a pilot study, four groups of discus (mean length 12.1 cm, mean weight 57.3 g) were submitted to a radiographic examination to assess the skeletal structure of the vertebral column under defined environmental conditions. Water temperature was 30°C for all groups. Two groups were held at <28.6 mg/L calcium (Ca) and two at 50.0-78.6 mg/L Ca within the ambient water. One of each water quality group was fed a commercial discus diet while the other two groups were kept on a plain beef-heart diet, creating a total of four separate groups. In the case of the beef heart group, dietary Ca content (g/kg) was 0.06 and phosphorous (P) content 2.06, leading to a Ca : P ratio of 0.03, whereas in the commercial diet group a Ca content of 20.1 g/kg and P of 7.36 g/kg resulted in a Ca : P ratio of 2.7. Magnesium (Mg) contents of the beef-heart diet were 0.21 and of the commercial diet 1.69 g/kg. Six fish were submitted to radiography at the beginning of the experiment as a control. After 16 wk of the above diets and environmental conditions, radiographs were taken from all fish (six per group) and evaluated by three independent persons using a scoring system. Alterations were found in all groups. The results of this pilot study give reason to scrutinize rearing and keeping conditions of this fish species.
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19
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Verri T, Werner A. Type II Na +-phosphate Cotransporters and Phosphate Balance in Teleost Fish. Pflugers Arch 2018; 471:193-212. [PMID: 30542786 DOI: 10.1007/s00424-018-2239-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/15/2018] [Accepted: 11/18/2018] [Indexed: 12/27/2022]
Abstract
Teleost fish are excellent models to study the phylogeny of the slc34 gene family, Slc34-mediated phosphate (Pi) transport and how Slc34 transporters contribute Pi homeostasis. Fish need to accumulate Pi from the diet to sustain growth. Much alike in mammals, intestinal uptake in fish is partly a paracellular and partly a Slc34-mediated transcellular process. Acute regulation of Pi balance is achieved in the kidney via a combination of Slc34-mediated secretion and/or reabsorption. A great plasticity is observed in how various species perform and combine the different processes of secretion and reabsorption. A reason for this diversity is found in one or two whole genome duplication events followed by potential gene loss; consequently, teleosts exhibit distinctly different repertoires of Slc34 transporters. Moreover, due to habitats with vastly different salinity, teleosts face the challenge of either preserving water in a hyperosmotic environment (seawater) or excreting water in hypoosmotic freshwater. An additional challenge in understanding teleost Pi homeostasis are the genome duplication and retention events that diversified peptide hormones such as parathyroid hormone and stanniocalcin. Dietary Pi and non-coding RNAs also regulate the expression of piscine Slc34 transporters. The adaptive responses of teleost Slc34 transporters to e.g. Pi diets and vitamin D are informative in the context of comparative physiology, but also relevant in applied physiology and aquaculture. In fact, Pi is essential for teleost fish growth but it also exerts significant adverse consequences if over-supplied. Thus, investigating Slc34 transporters helps tuning the physiology of commercially valuable teleost fish in a confined environment.
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Affiliation(s)
- Tiziano Verri
- Laboratory of General Physiology, Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.
| | - Andreas Werner
- Epithelial Research Group, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.
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20
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Zhang Z, Bi M, Yang J, Yao H, Liu Z, Xu S. Effect of phosphorus deficiency on erythrocytic morphology and function in cows. J Vet Sci 2018; 18:333-340. [PMID: 27586463 PMCID: PMC5639086 DOI: 10.4142/jvs.2017.18.3.333] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 06/30/2016] [Accepted: 08/26/2016] [Indexed: 12/28/2022] Open
Abstract
The aim of this study was to evaluate the influence of phosphorus (P) deficiency on the morphological and functional characteristics of erythrocytes in cows. Forty Holstein-Friesian dairy cows in mid-lactation were randomly divided into two groups of 20 each and were fed either a low-P diet (0.03% P/kg dry matter [DM]) or a control diet (0.36% P/kg DM). Red blood cell (RBC) indices results showed RBC and mean corpuscular hemoglobin decreased while mean corpuscular volume increased significantly (p < 0.05) in P-deficient cows. Erythrocyte morphology showed erythrocyte destruction in P-deficient cows. Erythrocytes' functional characteristics results showed total bilirubin and indirect bilirubin concentrations and aspartate transaminase and alanine transaminase activity levels in the serum of P-deficient cows were significantly higher than those in control diet-fed cows. Activities of superoxide dismutase and glutathione peroxidase in erythrocytes were lower, while the malondialdehyde content was greater, in P-deficient cows than in control diet-fed cows. Na+/K+-ATPase and Mg2+-ATPase activities were lower in P-deficient cows than in control diet-fed cows; however, Ca2+-ATPase activity was not significantly different. The phospholipid composition of the erythrocyte membrane changed and membrane fluidity rigidified in P-deficient cows. The results indicate that P deficiency might impair erythrocyte integrity and functional characteristics in cows.
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Affiliation(s)
- Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Mingyu Bi
- Harbin Railway Public Security Bureau police dog base, Harbin 150056, China
| | - Jie Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Haidong Yao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Zhonghua Liu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
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Witten PE, Fjelldal PG, Huysseune A, McGurk C, Obach A, Owen MAG. Bone without minerals and its secondary mineralization in Atlantic salmon (Salmo salar): the recovery from phosphorus deficiency. J Exp Biol 2018; 222:jeb.188763. [DOI: 10.1242/jeb.188763] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 12/14/2018] [Indexed: 12/11/2022]
Abstract
Calcium and phosphorus (P) are the main bone minerals and P-deficiency causes hypomineralized bones (osteomalacia) and malformations. This study uses a P-deficient salmon model to falsify three hypotheses. First, an extended period of dietary P-deficiency does not cause pathologies other than osteomalacia. Second, secondary mineralization of non-mineralized bone is possible. Third, secondary mineralization can restore the bones' mineral composition and mechanical properties.
Post-smolt Atlantic salmon (Salmo salar) received for seven weeks diets with regular P-content (RP), or with a 50% lowered P-content (LP). For additional nine weeks RP animals continued on the regular diet (RP-RP). LP animals continued on the LP-diet (LP-LP), on a regular P diet (LP-RP), or on a high P diet (LP-HP).
After 16 weeks, animals in all groups maintained a non-deformed vertebral column. LP-LP animals continued bone formation albeit without mineralization. Nine weeks of RP diet largely restored the mineral content and mechanical properties of vertebral bodies. Mineralization resumed deep inside the bone and away from osteoblasts. The history of P-deficiency was traceable in LP-RP and LP-HP animals as a ring of low-mineralized bone in the vertebral body endplates but no tissue alterations occurred that foreshadow vertebral body compression or fusion. Large quantities of non-mineralized salmon bone have the capacity to re-mineralize. If 16 weeks of P-deficiency as a single factor is not causal for typical vertebral body malformations other factors remain to be identified. This example of functional bone without minerals may explain why some teleost species can afford to have an extremely low mineralized skeleton.
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Affiliation(s)
- P. Eckhard Witten
- Ghent University, Biology Department, Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Per Gunnar Fjelldal
- Institute of Marine Research (IMR), Matre Aquaculture Research Station, Matredal, Norway
| | - Ann Huysseune
- Ghent University, Biology Department, Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Charles McGurk
- Skretting Aquaculture Research Center, P. O. Box 48, N-4001, Stavanger, Norway
| | - Alex Obach
- Skretting Aquaculture Research Center, P. O. Box 48, N-4001, Stavanger, Norway
| | - Matthew A. G. Owen
- Skretting Aquaculture Research Center, P. O. Box 48, N-4001, Stavanger, Norway
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Lu KL, Ji ZL, Rahimnejad S, Zhang CX, Wang L, Song K. De novo assembly and characterization of seabass Lateolabrax japonicus transcriptome and expression of hepatic genes following different dietary phosphorus/calcium levels. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2017; 24:51-59. [PMID: 28822867 DOI: 10.1016/j.cbd.2017.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 10/19/2022]
Abstract
Fish farming seriously influences the aquatic environment because most dietary phosphorus (P) is excreted in the effluent. To increase the P utilization in fish, molecular techniques should be explored given the remarkable development of these techniques. Thus, to identify the candidate genes related to P utilization and molecular alterations following administration of a P-deficient diet in seabass Lateolabrax japonicus, we assessed the de novo pituitary, gill, intestine, liver, kidney, scales and vertebra transcriptomes, and we compared the expression of hepatic genes with three diets varying in P and Ca levels: diet I (0.4% P, 0.3% Ca), diet II (0.8% P, 0.3% Ca), and diet III (0.8% P, 3% Ca). In total, we identified 99,392 unigenes, and 37,086 (37.31%) unigenes were annotated. The results showed that 48 unigenes were significantly (P<0.05) up-regulated, while 55 genes were significantly down-regulated in the liver of group I compared with group II. Offering the P-sufficient and high Ca diet, diet III significantly up-regulated 24 unigenes and down-regulated 46 genes in the liver. There were significant differences in the regulation of 8 unigenes (3 up-regulated and 5 down-regulated) between groups II and III. Gene ontology (GO) functional enrichment and KEGG pathway analysis of differently expressed genes were performed for each pair of groups. The GO analysis showed that a large number of biological processes were significantly altered between P-deficient and P-sufficient treatments (I vs II and I vs III). Comparing group I and group II, seven KEGG terms were enriched significantly: glycine, serine and threonine metabolism, one carbon pool by folate, arginine and proline metabolism, the biosynthesis of unsaturated fatty acids, fatty acid elongation, drug metabolism-cytochrome P450, and fatty acid metabolism. There was no significantly enriched KEGG pathway between groups II and III. In conclusion, our study revealed that a P-deficient diet could increase catabolism and decrease anabolism of protein, as highlighted by low protein efficiency in fish fed the P-deficient diet. Furthermore, P-deficiency could motivate the biosynthesis of fatty acids. However, the dietary Ca level had no significant effect on the growth and expression of hepatic genes in L. japonicus.
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Affiliation(s)
- Kang-Le Lu
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China
| | - Zhong-Li Ji
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China
| | - Samad Rahimnejad
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China
| | - Chun-Xiao Zhang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China.
| | - Ling Wang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China
| | - Kai Song
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China
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Witten PE, Owen MAG, Fontanillas R, Soenens M, McGurk C, Obach A. A primary phosphorus-deficient skeletal phenotype in juvenile Atlantic salmon Salmo salar: the uncoupling of bone formation and mineralization. JOURNAL OF FISH BIOLOGY 2016; 88:690-708. [PMID: 26707938 PMCID: PMC4784172 DOI: 10.1111/jfb.12870] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 11/11/2015] [Indexed: 05/17/2023]
Abstract
To understand the effect of low dietary phosphorus (P) intake on the vertebral column of Atlantic salmon Salmo salar, a primary P deficiency was induced in post-smolts. The dietary P provision was reduced by 50% for a period of 10 weeks under controlled conditions. The animal's skeleton was subsequently analysed by radiology, histological examination, histochemical detection of minerals in bones and scales and chemical mineral analysis. This is the first account of how a primary P deficiency affects the skeleton in S. salar at the cellular and at the micro-anatomical level. Animals that received the P-deficient diet displayed known signs of P deficiency including reduced growth and soft, pliable opercula. Bone and scale mineral content decreased by c. 50%. On radiographs, vertebral bodies appear small, undersized and with enlarged intervertebral spaces. Contrary to the X-ray-based diagnosis, the histological examination revealed that vertebral bodies had a regular size and regular internal bone structures; intervertebral spaces were not enlarged. Bone matrix formation was continuous and uninterrupted, albeit without traces of mineralization. Likewise, scale growth continues with regular annuli formation, but new scale matrix remains without minerals. The 10 week long experiment generated a homogeneous osteomalacia of vertebral bodies without apparent induction of skeletal malformations. The experiment shows that bone formation and bone mineralization are, to a large degree, independent processes in the fish examined. Therefore, a deficit in mineralization must not be the only cause of the alterations of the vertebral bone structure observed in farmed S. salar. It is discussed how the observed uncoupling of bone formation and mineralization helps to better diagnose, understand and prevent P deficiency-related malformations in farmed S. salar.
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Affiliation(s)
- P E Witten
- Ghent University, Department of Biology, Ledeganckstraat 35, 9000, Ghent, Belgium
| | - M A G Owen
- Skretting Aquaculture Research Centre, P. O. Box 48, N-4001, Stavanger, Norway
| | - R Fontanillas
- Skretting Aquaculture Research Centre, P. O. Box 48, N-4001, Stavanger, Norway
| | - M Soenens
- Ghent University, Department of Biology, Ledeganckstraat 35, 9000, Ghent, Belgium
| | - C McGurk
- Skretting Aquaculture Research Centre, P. O. Box 48, N-4001, Stavanger, Norway
| | - A Obach
- Skretting Aquaculture Research Centre, P. O. Box 48, N-4001, Stavanger, Norway
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24
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Le Luyer J, Deschamps MH, Proulx E, Poirier Stewart N, Joly Beauparlant C, Droit A, Robert C, Vandenberg GW. Establishment of a comprehensive reference transcriptome for vertebral bone tissue to study the impacts of nutritional phosphorus deficiency in rainbow trout (Oncorhynchus mykiss, Walbaum). Mar Genomics 2014; 18PB:141-144. [PMID: 25468063 DOI: 10.1016/j.margen.2014.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 09/12/2014] [Accepted: 10/08/2014] [Indexed: 11/29/2022]
Abstract
Reducing dietary phosphorus (P) is a common approach to reduce effluent P outputs. The potential resulting P-deficiency is known to negatively impact fish bone condition and might result in vertebral deformities. To date, no large-scale study involving deep sequencing of the bone transcriptome has been conducted in salmonids and vertebral molecular changes remain poorly described. This study aims to provide the first comprehensive vertebral transcriptome for rainbow trout (Oncorhynchus mykiss) to allow functional and quantitative expression studies. Fish weighing 60.8±1.6g, were fed for 27weeks using two practical diets having 0.29% (deficient) and 0.45% (sufficient) available phosphorus (P), respectively. Deep sequencing was conducted using HiSeq2000 Illumina 100 paired-end technology from pooled P-deficient and P-sufficient fish and individuals displaying vertebral deformities. Over 140 million trimmed paired-end reads were assembled de novo with Trinity and resulted in 679,869 transcripts with a mean length of 542.5bp. From these sequences, 340,747 matched with referenced ESTs from rainbow trout. Furthermore, 141,909 and 117,564 sequences were functionally annotated against Nr and Uniprot databases, respectively. Interestingly, we observed putative homologue sequences for most of the key components involved in bone formation and turnover in mammals.
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Affiliation(s)
- J Le Luyer
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada
| | - M-H Deschamps
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada
| | - E Proulx
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada
| | - N Poirier Stewart
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada
| | - C Joly Beauparlant
- Department of Molecular Medicine, Centre de Recherche du CHU de Québec, Université Laval, Québec, QC G1V 4G2, Canada
| | - A Droit
- Department of Molecular Medicine, Centre de Recherche du CHU de Québec, Université Laval, Québec, QC G1V 4G2, Canada
| | - C Robert
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada
| | - G W Vandenberg
- Département des sciences animales, Pavillon Paul-Comtois, 2425, rue de l'Agriculture, Université Laval, Québec, QC G1V 0A6, Canada.
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26
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Abstract
Under intensive culture conditions, fish are subject to increased stress owing to environmental (water quality and hypoxia) and health conditions (parasites and infectious diseases). All these factors have negative impacts on fish well-being and overall performance, with consequent economic losses. Though good management practices contribute to reduce stressor effects, stress susceptibility is always high under crowded conditions. Adequate nutrition is essential to avoid deficiency signs, maintain adequate animal performance and sustain normal health. Further, it is becoming evident that diets overfortified with specific nutrients [amino acids, essential fatty acids (FAs), vitamins or minerals] at levels above requirement may improve health condition and disease resistance. Diet supplements are also being evaluated for their antioxidant potential, as fish are potentially at risk of peroxidative attack because of the large quantities of highly unsaturated FAs in both fish tissues and diets. Functional constituents other than essential nutrients (such as probiotics, prebiotics and immunostimulants) are also currently being considered in fish nutrition aiming to improve fish growth and/or feed efficiency, health status, stress tolerance and resistance to diseases. Such products are becoming more and more important for reducing antibiotic utilization in aquafarms, as these have environmental impacts, may accumulate in animal tissues and increase bacterial resistance. This study reviews knowledge of the effect of diet nutrients on health, welfare and improvement of disease resistance in fish.
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Affiliation(s)
- A Oliva-Teles
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
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27
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Aerobic training stimulates growth and promotes disease resistance in Atlantic salmon (Salmo salar). Comp Biochem Physiol A Mol Integr Physiol 2011; 160:278-90. [PMID: 21726657 DOI: 10.1016/j.cbpa.2011.06.013] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 06/20/2011] [Accepted: 06/20/2011] [Indexed: 11/20/2022]
Abstract
Improving fish robustness is of utmost relevance to reducing fish losses in farming. Although not previously examined, we hypothesized that aerobic training, as shown for human studies, could strengthen disease resistance in Atlantic salmon (Salmo salar). Thus, we exercised salmon pre-smolts for 6 weeks at two different aerobic training regimes; a continuous intensity training (CT; 0.8bls(-1)) and an interval training (IT; 0.8bl s(-1) 16h and 1.0bl s(-1) 8h) and compared them with untrained controls (C; 0.05bl s(-1)). The effects of endurance training on disease resistance were evaluated using an IPN virus challenge test, while the cardiac immune modulatory effects were characterized by qPCR and microarray gene expression analyses. In addition, swimming performance and growth parameters were investigated. Survival after the IPN challenge was higher for IT (74%) fish than for either CT (64%) or C (61%) fish. While both CT and IT groups showed lower cardiac transcription levels of TNF-α, IL-1β and IL-6 prior to the IPN challenge test, IT fish showed the strongest regulation of genes involved in immune responses and other processes known to affect disease resistance. Both CT and IT regimes resulted in better growth compared with control fish, with CT fish developing a better swimming efficiency during training. Overall, interval aerobic training improved growth and increased robustness of Atlantic salmon, manifested by better disease resistance, which we found was associated with a modulation of relevant gene classes on the cardiac transcriptome.
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Panigrahi A, Kiron V, Satoh S, Watanabe T. Probiotic bacteria Lactobacillus rhamnosus influences the blood profile in rainbow trout Oncorhynchus mykiss (Walbaum). FISH PHYSIOLOGY AND BIOCHEMISTRY 2010; 36:969-977. [PMID: 20127411 DOI: 10.1007/s10695-009-9375-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 12/20/2009] [Indexed: 05/28/2023]
Abstract
This paper reports the effect of feeding probiotic diets on blood profiles in rainbow trout. Two experiments were performed: in the first, fish of average weight 75 g were offered either a commercial feed or the same incorporated with 10(9) CFU g(-1) of lactic acid bacteria Lactobacillus rhamnosus for 30 days; in the second study performed for a similar duration, fish of average weight 126 g were offered formulated diets that either contained the same bacteria in heat-killed or freeze-dried form (nearly 10(11) CFU g(-1)), or the basal diet without the bacteria. Blood samples were collected at different times after commencement of probiotic feeding to determine the total cholesterol, triglyceride contents, the plasma alkaline phosphatase activity, plasma protein and hematocrit value. The plasma cholesterol significantly increased upon probiotic feeding in the first experiment. A significant elevation (P<0.05) of plasma cholesterol and triglyceride and alkaline phosphatase activity level was found in the freeze-dried probiotic fed groups at 20 and 30 days postfeeding. This was concomitant with the increased plasma protein and hematocrit values in FD group at 20 and 30 days. Likewise, the heat-killed probiotic fed group registered significantly high values of triglycerides, alkaline phosphatase activity, and plasma protein compared to the control diet fed groups after 20 days of feeding. Thus, alterations in the blood profiles could serve as supplementary information when examining the benefits of probiotics for fish.
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Affiliation(s)
- A Panigrahi
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Minato, Tokyo, 108-8477, Japan.
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29
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Kumar V, Makkar HPS, Becker K. Dietary inclusion of detoxified Jatropha curcas kernel meal: effects on growth performance and metabolic efficiency in common carp, Cyprinus carpio L. FISH PHYSIOLOGY AND BIOCHEMISTRY 2010; 36:1159-1170. [PMID: 20369288 DOI: 10.1007/s10695-010-9394-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 03/22/2010] [Indexed: 05/29/2023]
Abstract
Jatropha curcas is a multipurpose and drought-resistant shrub or small tree widespread all over the tropics and subtropics. Its seeds are rich in oil, and the Jatropha kernel meal obtained after oil extraction is rich in protein. However, presence of toxic and antinutritional constituents restricts its use in fish feed. Jatropha kernel meal was detoxified. Common carp, Cyprinus carpio, fingerlings (15; av. body mass 10.9±0.65 g) were randomly distributed in three groups with five replicates. A 6-week feeding experiment was conducted in a respirometer system to evaluate the growth performance, nutrient utilisation and energy budget. Fish were fed isonitrogenous diets (38% crude protein): control diet (Control group) containing fish meal (FM) protein based protein and two other diets replacing 75% FM protein with detoxified Jatropha kernel meal (DJKM, Jatropha group) and soybean meal (SBM, Soybean group). At the end of the experiment, body mass gain, metabolic growth rate, protein efficiency ratio, protein productive value, energy retention, efficiency of metabolised energy for growth and efficiency of energy retention were determined. These parameters were high and statistically similar for Control and Jatropha groups and significantly lower (P<0.05) for Soybean group. Whereas a reverse trend was observed for energy expenditure per g protein retained in fish body. No significant differences were found in heat released, gross energy uptake, metabolised energy intake, metabolisability, energy expenditure, energy expenditure per g protein fed and apparently unmetabolised energy. Conclusively, common carp-fed plant protein (DJKM and SBM) and FM protein-based diets exhibited equal average metabolic rate.
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Affiliation(s)
- V Kumar
- Institute for Animal Production in the Tropics and Subtropics (480), University of Hohenheim, 70599, Stuttgart, Germany
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Sukumaran K, Pal AK, Sahu NP, Dalvi RS, Debnath D. Haemato-biochemical responses and induction of HSP70 to dietary phosphorus in Catla catla (Hamilton) fingerlings. FISH PHYSIOLOGY AND BIOCHEMISTRY 2008; 34:299-306. [PMID: 18958586 DOI: 10.1007/s10695-007-9188-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Accepted: 10/04/2007] [Indexed: 05/27/2023]
Abstract
A feeding trial of 120 days was conducted to study the effect of graded levels of dietary phosphorus on haematology, serum protein concentrations and HSP70 expression in fingerlings of the Indian major carp, Catla (Catla catla). Eight isonitrogenous and isoenergetic purified diets were formulated to contain graded levels of dietary phosphorus (dP), i.e., T(1), 0.1%; T(2), 0.3%; T(3), 0.5%; T(4), 0.7%; T(5), 0.9%; T(6), 1.1%; T(7), 1.3%; or T(8), 1.5%. Four hundred and eighty fish (average weight 4.23 +/- 0.016 g) were equally distributed into 24 tanks forming eight treatments with three replicates each. The fish were fed daily at the rate of 3.5% body weight in two instalments. At the end of feeding trial fish were sampled to study total RBC and WBC count, haemoglobin, serum lysozyme activity, serum total protein, albumin (A), globulin (G) concentration and HSP70 expression. Total RBC count, haemoglobin concentration and serum lysozyme activity did not vary significantly in response to different dietary phosphorus concentrations. Total WBC count was found to be significantly (P < 0.05) higher in T(1 )relative to all other treatments. Serum albumin and A/G ratio was found to be significantly lower in fish of T(1) and T(2) in relation to T(7) group (P < 0.05). Serum globulin and total protein levels remained unaffected by variations in dietary phosphorus. HSP70 expression was observed in T(1) group (0.1% dP) in gills and brain tissue, but not in liver and muscle tissues. No HSP70 expression was observed in fish of T(4) (0.7% dP) and T(8) (1.5% dP) treatments. These prima facie results suggest that dietary phosphorus had only minor influence on the haemato-biochemical parameters studied; however dietary phosphorus deficiency caused organ specific induction of HSP70 in catla fingerlings.
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Affiliation(s)
- K Sukumaran
- Fish Biochemistry Laboratory, Central Institute of Fisheries Education, Fisheries University Road, Versova, Mumbai 400 061, India
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31
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Aunsmo A, Guttvik A, Midtlyng PJ, Larssen RB, Evensen O, Skjerve E. Association of spinal deformity and vaccine-induced abdominal lesions in harvest-sized Atlantic salmon, Salmo salar L. JOURNAL OF FISH DISEASES 2008; 31:515-524. [PMID: 18577101 DOI: 10.1111/j.1365-2761.2007.00899.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Spinal deformities in Atlantic salmon, Salmo salar L., have been described as a disease of multifactorial origin for which vaccines and time of vaccination have been suggested as risk factors. A vaccine efficacy trial where spinal deformity became evident was continued by the observational study reported here. In the preharvest part of the study 17 months post-sea transfer, there was a prevalence of 11.3% spinal deformity, with deformities present only in one vaccine group indicating a strong vaccine involvement. At slaughter, the prevalence of spinal deformities was 11.7%, and deformed fish had only 62% of normal slaughter weight. Visual analogue scales (VAS) were used for continuous recordings of vaccine-induced abdominal lesions and deformity. A logistic regression model associating presence of spinal deformity with markers of abdominal lesions was developed. The odds ratio for spinal deformity was 5.7 (95% CI: 3.4-9.4) for each unit increase in adhesion score (0-6) and 4.9 (2.9-3.4) for each unit increase in melanin on abdominal organs (0-3). Lesions in the dorsal caudal part of the abdomen gave an odds ratio for spinal deformity of 2.2.
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Affiliation(s)
- A Aunsmo
- Norwegian School of Veterinary Science, Oslo, Norway.
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32
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Oliveira M, Gravena R, Marques R, Guandolini G, Moraes V. Utilização de nutrientes em frangos alimentados com dietas suplementadas com fitase e níveis reduzidos de fósforo não-fítico. ARQ BRAS MED VET ZOO 2008. [DOI: 10.1590/s0102-09352008000200024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Avaliaram-se a digestibilidade ileal, retenção de nutrientes e valores de energia metabolizável aparente (EMA) de dietas suplementadas com fitase e níveis reduzidos de fósforo não-fítico (FNF) para frangos de corte. Foram utilizados 330 pintos machos em delineamento em blocos ao acaso e esquema fatorial 2 x 3 com dois níveis de fitase (0 e 25U/kg) e três níveis de FNF (100, 85 e 70% das exigências da ave), totalizando seis tratamentos com cinco repetições de 11 aves cada. Não houve efeito da interação FNF vs fitase e dos níveis de FNF ou fitase sobre a retenção de matéria seca e de fósforo, e a interação FNF vs fitase foi significativa para retenção de proteína bruta e coeficiente de digestibilidade ileal da matéria seca. A suplementação com fitase, independente dos níveis de FNF, melhorou o coeficiente digestibilidade ileal da proteína bruta, do cálcio e do fósforo. A retenção de cálcio e a redução dos níveis de FNF diminuíam a metabolização da energia bruta das dietas com 85 e 70% das exigências de FNF. Dietas com nível de 70% das exigências de FNF, suplementadas com fitase, podem ser usadas para frangos de corte sem prejuízos à digestibilidade ileal e retenção da matéria seca, proteína bruta, cálcio e fósforo e à metabolização da energia bruta.
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Sullivan M, Reid SWJ, Ternent H, Manchester NJ, Roberts RJ, Stone DAJ, Hardy RW. The aetiology of spinal deformity in Atlantic salmon, Salmo salar L.: influence of different commercial diets on the incidence and severity of the preclinical condition in salmon parr under two contrasting husbandry regimes. JOURNAL OF FISH DISEASES 2007; 30:759-767. [PMID: 18034683 DOI: 10.1111/j.1365-2761.2007.00890.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A large-scale trial of the effect of different commercial diets on the incidence of preclinical spinal deformation, as assessed by radiography, and the influence of two contrasting rearing systems was carried out. Two sets of three populations of Atlantic salmon, each of 20 000 first feeding fry of identical hatchery origin, created from equal numbers of eggs from 15 different families, were reared under commercial conditions on two different farms. Three commercial (closed formula) extruded fish meal-based diets were used in this study (diets A, B & C). Each diet was fed to one population of 20 000 fish at each site. Fish were fed a percentage of their body weight per day, with feeding rates set at commercial levels, based on water temperature, day length and fish biomass. Additional hand feeding was used to ensure satiation in all tanks. Fish in each tank were bulk-weighed and counted at the beginning and at 2-week intervals throughout the study. The fish were grown for 30 weeks. In addition, phosphorus (P) digestibility was evaluated by in-feed absorption testing in rainbow trout. The morphology of the radiographic lesions conformed to those described previously. Statistical analysis using multivariate regression analysis showed that date of sampling, site and diet were all statistically significant (P < 0.001) on univariable analysis. Farm A had significantly more affected fish than farm B (P < 0.001), which may have been attributable to variation in dissolved oxygen levels. The available dietary P levels were low in each diet. The number of fish affected in the group of fish being fed diet B was significantly lower than in the groups being fed diets A or C (P < 0.001). It appears most likely that the occurrence of preclinical radiographically apparent defects in parr which are believed to lead to the condition known as 'spinal deformity' is predominantly caused by a deficiency of available dietary P in first-feeding fry. The availability of dietary P may also vary considerably between diets formulated using different ingredients. Phytate-P associated with plant ingredients may affect the availability of P as well as other essential dietary nutrients. Additionally, diets for the production of salmonids in fresh water are currently formulated to keep P effluent to a minimum compatible with healthy spinal development. These various factors combine to make it crucial that small Atlantic salmon, especially first-feeding fry, are provided with carefully formulated diets fortified to an adequate level with a high quality source of available P.
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Affiliation(s)
- M Sullivan
- Institute of Comparative Medicine, Faculty of Veterinary Medicine, University of Glasgow, Glasgow, UK.
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34
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Kirchner S, McDaniel NK, Sugiura SH, Soteropoulos P, Tian B, Fletcher JW, Ferraris RP. Salmonid microarrays identify intestinal genes that reliably monitor P deficiency in rainbow trout aquaculture. Anim Genet 2007; 38:319-31. [PMID: 17596124 DOI: 10.1111/j.1365-2052.2007.01615.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nutrient-responsive genes can identify important metabolic pathways and evaluate optimal dietary levels. Using a 16K Salmo salar microarray, we identified in rainbow trout (Oncorhynchus mykiss) 21 potential phosphorus (P)-responsive genes, mainly involved in immune response, proteolysis or transport, whose expression levels changed in the intestine after 5 days of feeding a low-P (LP) diet. Diet-induced changes in the expression levels of several genes in each fish were tightly correlated with changes in serum P, and the changes persisted for an additional 15 days after dietary P deficiency. We then evaluated these and previously identified P-responsive genes under simulated farm conditions, and monitored the intestinal gene expression from 6 h to 7 days after the trout were switched from a sufficient-P (SP) diet to a LP diet (SP-->LP), and from a LP diet to a SP diet (LP-->SP). After 7 days, mean serum P decreased 0.14 mM/day for SP-->LP and increased 0.10 mm/day for LP-->SP. The mRNA abundance of the metalloendopeptidase meprin 1alpha (MEP1alpha), the Na(+)-dependent phosphate co-transporter (NaPi2b,SLC34A2), the sulfotransferase SULT2beta1 and carbonic anhydrase XIII genes all increased after SP-->LP and decreased after LP-->SP, suggesting that adaptive expression is reversible and correlated with dietary P. The duration of change in gene expression in response to SP-->LP was generally shorter than that of LP-->SP, suggesting potentially different mechanisms of adaptation to deficiency as opposed to excess. Diet-induced changes in mRNA abundance of other genes were either transient or modest. We identified, by heterologous microarray hybridization, new genes sensitive to perturbations in dietary P, and then showed that these genes can reliably monitor P deficiency under field conditions. Simultaneous changes in the expression of these P biomarkers could predict either P deficiency (to prevent economic losses to the farmers) or P excess (to prevent inadvertent pollution of nearby waters).
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Affiliation(s)
- S Kirchner
- Department of Pharmacology and Physiology, University of Medicine and Dentistry of New Jersey (UMDNJ), New Jersey Medical School, Newark, NJ 07103-2714, USA
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