1
|
Belguith K, Jrad Z, Oussaief O, Debara M, Bouhemda T, Sebii H, Hammadi M, El Hatmi H. Reformulation of Tunisian Sun-Dried Merguez with Camel Meat: Characterization of Physicochemical and Compositional Changes in Organic Acids, Fatty Acids, Volatile Compounds, and Minerals. Foods 2024; 13:1032. [PMID: 38611337 PMCID: PMC11011335 DOI: 10.3390/foods13071032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 04/14/2024] Open
Abstract
Traditional sun-dried merguez is an authentic Tunisian dried sausage made with a large number of spices and herbs, which was reformulated in this study with camel meat and hump fat and dried as in the artisanal process. This research studied the physicochemical, microbiological, and chemical compositional changes that occurred in fresh camel merguez (FCM) after 12 days of drying to achieve traditional dried camel merguez (DCM). The results showed significant weight loss (54.1%), as well as significant decreases in pH (5.20-4.97), moisture (60.5-12.3%), and water activity (0.986-0.673). These results and the acceptable microbiological quality of DCM can explain the safety of traditionally practiced long-term storage at room temperature. All chemical compositions increased upon drying. The composition of DCM included several organic acids, mainly lactate (2820 mg.kg-1); diverse unsaturated fatty acids, in particular oleic acid (33.2%); and various minerals, specifically iron (8 mg per 100 g), in addition to volatile compounds impacted by herbs and spices rich in terpenes (56.3%). These results can be useful for investing in indigenous products and promoting the exploitation of camel meat.
Collapse
Affiliation(s)
- Khaoula Belguith
- Physiopathology, Food and Biomolecules Laboratory (LR17ES03), Higher Institute of Biotechnology Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
| | - Zeineb Jrad
- Livestock and Wildlife Laboratory (LR16IRA04), Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia (M.H.); (H.E.H.)
| | - Olfa Oussaief
- Livestock and Wildlife Laboratory (LR16IRA04), Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia (M.H.); (H.E.H.)
| | - Mohamed Debara
- Central Laboratory, Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia; (M.D.)
| | - Talel Bouhemda
- Central Laboratory, Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia; (M.D.)
| | - Haifa Sebii
- Laboratory of Analysis Valorization and Food Safety, National Engineering School of Sfax, University of Sfax, Sfax 3038, Tunisia
| | - Mohamed Hammadi
- Livestock and Wildlife Laboratory (LR16IRA04), Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia (M.H.); (H.E.H.)
| | - Halima El Hatmi
- Livestock and Wildlife Laboratory (LR16IRA04), Institute of Arid Land, University of Gabes, Medenine 4100, Tunisia (M.H.); (H.E.H.)
| |
Collapse
|
2
|
Jin X, Meng L, Qi Z, Mi L. Transcriptomics and metabolomics analysis reveal the dietary copper deficiency and supplementation effects of liver gene expression and metabolite change in grazing sheep. BMC Genomics 2024; 25:220. [PMID: 38413895 PMCID: PMC10900733 DOI: 10.1186/s12864-024-10134-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 02/16/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND The appropriate mineral nutrients are essential for sheep growth and reproduction. However, traditional grazing sheep often experience mineral nutrient deficiencies, especially copper (Cu), due to inadequate mineral nutrients from natural pastures. RESULTS The results indicated that dietary Cu deficiency and supplementation significantly reduced and elevated liver concentration of Cu, respectively (p < 0.05). FOXO3, PLIN1, ACTN2, and GHRHR were identified as critical genes using the weighted gene co-expression network analysis (WGCNA), quantitative real-time polymerase chain reaction (qRT-PCR), and receiver operating characteristic curve (ROC) validation as potential biomarkers for evaluating Cu status in grazing sheep. Combining these critical genes with gene functional enrichment analysis, it was observed that dietary Cu deficiency may impair liver regeneration and compromise ribosomal function. Conversely, dietary Cu supplementation may enhance ribosomal function, promote lipid accumulation, and stimulate growth and metabolism in grazing sheep. Metabolomics analysis indicated that dietary Cu deficiency significantly decreased the abundance of metabolites such as cholic acid (p < 0.05). On the other hand, dietary Cu supplementation significantly increased the abundance of metabolites such as palmitic acid (p < 0.05). Integrative analysis of the transcriptome and metabolome revealed that dietary Cu deficiency may reduce liver lipid metabolism while Cu supplementation may elevate it in grazing sheep. CONCLUSIONS The Cu content in diets may have an impact on hepatic lipid metabolism in grazing sheep. These findings provide new insights into the consequences of dietary Cu deficiency and supplementation on sheep liver and can provide valuable guidance for herders to rationalize the use of mineral supplements.
Collapse
Affiliation(s)
- Xiwei Jin
- School of Life Sciences, Inner Mongolia University, Hohhot, 010000, China
| | - Lingbo Meng
- School of Life Sciences, Inner Mongolia University, Hohhot, 010000, China
| | - Zhi Qi
- School of Life Sciences, Inner Mongolia University, Hohhot, 010000, China
| | - Lan Mi
- School of Life Sciences, Inner Mongolia University, Hohhot, 010000, China.
| |
Collapse
|
3
|
Tharwat M, El-Ghareeb WR, Almundarij TI. Depraved appetite in dromedary camels: Clinical, ultrasonographic, and postmortem findings. Open Vet J 2024; 14:652-663. [PMID: 38549572 PMCID: PMC10970125 DOI: 10.5455/ovj.2024.v14.i2.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/16/2024] [Indexed: 04/02/2024] Open
Abstract
Background Camels are subjected to a wide variety of nutritional deficiencies as they are largely dependent upon grazing desert plants. As a consequence, the syndrome of pica or depraved appetite is occasionally seen in dromedary camels. The condition is manifested as chewing or eating abnormal things such as wood, dirt, bones, stones, clothes, plastics, mud, sand, or other inanimate objects. Aim This study was designed to investigate the clinical, ultrasonographic, and postmortem findings in dromedary camels with pica or depraved appetite. Methods Twenty-five camels of 5 days to 15 years were examined. Owner complaints included depraved appetite, loss of body condition, regurgitation of stomach content, and partial or complete absence of feces. Symptoms described were present for a period varying between 3 days, up to 12 months. The stomach compartments and small and large intestines were scanned using ultrasonography from the right and left sides of the abdomen. Necropsy was carried out on six female and three male camels where the thoracic and abdominal organs were examined with special attention to the digestive system. Results The affected animals had a history of gradual loss of body conditions, eating foreign objects, decreased or total absence of feces, and regurgitation of stomach content. Using ultrasound, the foreign body was imaged occluding completely or partially the intestines. Foreign bodies within the rumen could not be visualized with ultrasound. In cases where the rumen is impacted by sand, small pin-points revealing acoustic enhancement were imaged. Foreign bodies were removed from the rumen at exploratory rumenotomy (n = 11), laparotomy (n = 3), or at necropsy (n = 8) in the form of plastics, cloths, sand, mud, wool balls, robes, glasses, or even metallic objects which may be blunt or sharp. Sixteen (64%) of the camels were recovered while the remaining 9 (36%) did not survive. Conclusion The syndrome of pica or depraved appetite is an important condition in dromedary resulting in the ingestion of objects other than normal feed. Substantial economic losses are expected as a result of this syndrome. Ultrasonography of the digestive system may help the clinician in some cases to localize of occluding foreign bodies in the intestines, while in the transabdominal scanning of the stomach is valuable only in cases of sand impaction.
Collapse
Affiliation(s)
- Mohamed Tharwat
- Department of Clinical Sciences, College of Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
- Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Waleed R. El-Ghareeb
- Department of Public Health, College of Veterinary Medicine, King Faisal University, Hofuf, Saudi Arabia
| | - Tariq I. Almundarij
- Department of Biomedical Sciences, College of Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| |
Collapse
|
4
|
Lamraoui M, de Almeida AM, Khelef Y, Boukhalfa F, Lamraoui I, Sahraoui N. Establishment of biochemical and hematological profiles of dromedary camel (Camelus dromedarius) under extensive and intensive production systems. Trop Anim Health Prod 2023; 56:25. [PMID: 38133870 DOI: 10.1007/s11250-023-03795-x] [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: 04/01/2023] [Accepted: 10/12/2023] [Indexed: 12/23/2023]
Abstract
In Algeria, camel husbandry is undergoing a shift from a traditional extensive system to one more intensive. Such a move in the production system of the dromedary camel should be well investigated in terms of animal welfare, health, and production status. The main objective of this study was to define and evaluate the effects of production systems on physiological responses (hematological and biochemical parameters) in Sahraoui dromedary camels to understand possible changes caused by intensive livestock farming. We analyzed the biochemical and hematological blood profiles in Sahraoui dromedary camel to evaluate and establish the differential responses to intensive conditions. Blood samples were taken from 41 healthy Sahraoui dromedary camels as part of routine veterinary analysis in southern Algeria. In total, 28 camels were from an intensive production system (IS) fed with formulated concentrate and a supply of minerals, and 13 camels were reared in a traditional extensive system (ES) maintained exclusively on grazing. Animals were of a different sex: 16 males and 25 females, and they were divided into three age categories: less than 4 years, 4 to 8, and above 8 years. All animals were healthy. This enabled us to simultaneously check the effect of age and sex on the blood profiles. Results showed that the production system affected the blood parameters of Sahraoui dromedary camel; as total protein, total cholesterol, and urea concentration were significantly higher in the plasma of animals in the intensive production system (P < 0.05). Glucose, triglycerides, and urea values differed significantly (P < 0.05) in camel plasma between age categories. Sex in our study had no effect on enzyme activities (P > 0.05). However, lactate dehydrogenase (LDH) was significantly higher (P < 0.05) in camels reared in the extensive production system (1454.13 ± 290 IU/l) than those reared in intensive production system (1313.17 ± 32 IU/l). Age and sex had a marginal effect on mineral status in dromedary camel plasma as only iron concentrations were significantly higher in male camels (P < 0.05), while Ca, P, and K concentrations were increased in the intensive system. On the other hand, our findings showed that sex, age, and production system did not affect the hematological parameters of Sahraoui dromedary (P > 0.05), except for hematocrit (PCV %) that was significantly higher in the extensive system. This work contributes to a better understanding of Sahraoui dromedary camel biology regarding the effect of different production systems on hemato-biochemical parameters.
Collapse
Affiliation(s)
- Messaouda Lamraoui
- Laboratoire de Biomathématiques, Biophysique, Biochimie Et Scientométrie, Faculté Des Sciences de La Nature Et de La Vie, Université de Bejaia, 06000, Bejaia, Algeria.
| | - André M de Almeida
- LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisbon, Portugal
| | - Yahia Khelef
- Laboratory of Biology, Environment and Health (LBEH), El Oued University, El Oued, Algeria
| | - Farid Boukhalfa
- Laboratoire de Biomathématiques, Biophysique, Biochimie Et Scientométrie, Faculté Des Sciences de La Nature Et de La Vie, Université de Bejaia, 06000, Bejaia, Algeria
| | - Imane Lamraoui
- Higher National School of Biotechnology "Toufik Khaznadar" (ENSB), 25000, Constantine, Algeria
| | - Naima Sahraoui
- Laboratoire de Biotechnologies Liées À La Reproduction (LBRA), Veterinary Institute, Université Saad Dahlab de Blida, Blida, Algeria
| |
Collapse
|
5
|
Nasreldin N, EL-Shoukary RD, Abdel-Raheem GSE, Gharib HS, Zigo F, Farkašová Z, Rehan IF, Senosy W. Effect of mineral-vitamin premix supplementation on behavioral, performance, hormonal, oxidative stress, and serum biochemical profiles on rutting male Camelus dromedarius in Egypt. Front Vet Sci 2023; 10:1221830. [PMID: 37929284 PMCID: PMC10623354 DOI: 10.3389/fvets.2023.1221830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 09/21/2023] [Indexed: 11/07/2023] Open
Abstract
Introduction The rutting period imposes a stressful condition on male camels, which results in elevated serum cortisol levels and alterations in their sexual behavior. Therefore, the current work was carried out to investigate the effect of mineral-vitamin premix supplementation on behavior, reproductive performance, hormones, serum oxidative stress profile, and other serum biochemical parameters of Camelus dromedarius during the breeding season. Methods Fourteen mature, fertile male Camelus dromedarius were divided into two groups, a control group (n = 7) and a mineral-vitamin premix group (n = 7). The present study lasted for 95 days during the rutting period (1st February to 5th May). Each camel in the premix group received a daily diet of 50 g of mineral-vitamin premix throughout the whole rutting period, during which the frequencies and durations of the following behaviors: maintenance, posture, aggressiveness, and sexual activity were collected every 20 min. At the end of the study, blood samples were collected. Results Results revealed that the premix group showed higher (P < 0.05) maintenance (feeding and rumination), standing, and overall sexual desire-related behavior frequency, besides more times (P < 0.001) for rumination, standing, walking, and lying while showing lower (P < 0.001) frequencies of overall aggressive behaviors than the control group. The serum concentration of malondialdehyde, nitric oxide, cortisol, blood glucose, and urea evidenced a significant decrease in the premix group compared with the control one, while significantly elevated levels of reduced glutathione, testosterone, total antioxidant capacity, triiodothyronine, and thyroxin, total protein, albumin, globulin, calcium, phosphorus, potassium, and magnesium were recorded in the premix group in comparison with the control. Conclusion It could be concluded that daily dietary supplementation of 50 g of mineral-vitamin premix to male camels during the breeding season is necessary to overcome the oxidative stress and serum cortisol concentration with a subsequent decrease in aggressive behavior and improvement to testosterone level in blood, body condition score and body weight gain.
Collapse
Affiliation(s)
- Nani Nasreldin
- Department of Pathology and Clinical Pathology, Faculty of Veterinary Medicine, New Valley University, El-Kharga, Egypt
| | - Ramadan D. EL-Shoukary
- Department of Development of Animal Wealth, Faculty of Veterinary Medicine, New Valley University, El-Kharga, Egypt
| | - Ghada S. E. Abdel-Raheem
- Departments of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Assiut University, Asyut, Egypt
| | - Heba S. Gharib
- Department of Behaviour and Management of Animal, Poultry and Aquatic, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - František Zigo
- Department of Nutrition and Animal Husbandry, University of Veterinary Medicine and Pharmacy, Košice, Komenského, Slovakia
| | - Zuzana Farkašová
- Department of Nutrition and Animal Husbandry, University of Veterinary Medicine and Pharmacy, Košice, Komenského, Slovakia
| | - Ibrahim F. Rehan
- Department of Husbandry and Development of Animal Wealth, Faculty of Veterinary Medicine, Menoufia University, Shebin Alkom, Menoufia, Egypt
- Department of Pathobiochemistry, Faculty of Pharmacy, Meijo University, Nagoya-shi, Japan
| | - Waleed Senosy
- Department of Theriogenology, Faculty of Veterinary Medicine, New Valley University, El-Kharga, Egypt
| |
Collapse
|
6
|
Rizwan HM, Sajid MS, Younus M, Naeem MA, Taseer MSA, Ebaid H. Evaluation of trace elements in forages and their effect on gastrointestinal parasite burden in grazing sheep. Saudi J Biol Sci 2023; 30:103768. [PMID: 37645686 PMCID: PMC10461023 DOI: 10.1016/j.sjbs.2023.103768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/31/2023] Open
Abstract
This study was designed to evaluate the trace elements (minerals) in forages fed to sheep and their effect on gastrointestinal parasite burdens. The ultimate objective was to determine the correlation between the burden of gastrointestinal (GI) parasites and the level of trace minerals in sheep serum as a result of the forages they grazed on. A total of 384 faecal samples were collected from sheep in each of the districts (Sialkot and Multan) and examined quantitatively using the McMaster technique. Serum collected from them and plants were pre-treated, and spectrophotometry was used to determine the concentration of trace minerals (Mn, Co, Cu, and Zn). The level of these trace elements differed significantly (P < 0.05) in forages from both districts. In the district of Sialkot, the highest concentrations (mg/Kg) of Zn (38.53 ± 0.16) were found in Cichorium intybus, Cu (41.57 ± 0.07) in Cynodon dactylon, Mn (39.61 ± 0.05) in Parthenium hysterophorus, and Co (1.42 ± 0.03) in Coronopus didymus. In the district of Multan, the highest concentrations (mg/Kg) of Zn (39.43 ± 0.46) were found in Cichorium intybus, Cu (25.76 ± 0.36) in Cynodon dactylon, Mn (34.29 ± 0.53) in Launaea nudicaulis, and Co (1.74 ± 0.08) in Brachiaria raptens. The prevalence of GI parasites in sheep populations in district Sialkot was 34%, while in district Multan, it was 32%. In tehsil Sialkot of district Sialkot, Zn and Cu were significantly (P < 0.05) correlated with eggs per gram (EPG) of faeces, while in tehsil Multan City of district Multan, only Cu was significantly (P < 0.05) correlated with EPG. The potential mechanism behind the role of trace minerals in lowering the burdens of GI parasites requires more investigation. It is recommended that plants with high content of trace minerals should be utilized as part of comprehensive preventive and control strategies against GI parasitism in ruminant animals like sheep.
Collapse
Affiliation(s)
- Hafiz Muhammad Rizwan
- Section of Parasitology, Department of Pathobiology, KBCMA College of Veterinary and Animal Science, Narowal, Sub campus UVAS, Lahore, Pakistan
| | - Muhammad Sohail Sajid
- Department of Parasitology, Faculty of Veterinary Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Younus
- Section of Pathology, Department of Pathobiology, KBCMA College of Veterinary and Animal Science, Narowal, Sub campus UVAS, Lahore, Pakistan
| | - Muhammad Ahsan Naeem
- Section of Pharmacology, Department of Basic Sciences, KBCMA College of Veterinary and Animal Science, Narowal, Sub campus UVAS, Lahore, Pakistan
- College of Veterinary Medicine, Huazhong Agricultural University Wuhan 430070, China
| | - Muhammad Sulman Ali Taseer
- Section of Pathology, Department of Pathobiology, KBCMA College of Veterinary and Animal Science, Narowal, Sub campus UVAS, Lahore, Pakistan
| | - Hossam Ebaid
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| |
Collapse
|
7
|
Sadan M, El-Khodery S, Almatroodi S, Alsobayil F, El-Shafaey ES. Diagnosing and treating esophageal obstruction in camels ( Camelus dromedarius). Vet World 2023; 16:735-742. [PMID: 37235168 PMCID: PMC10206966 DOI: 10.14202/vetworld.2023.735-742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 02/15/2023] [Indexed: 05/28/2023] Open
Abstract
Background and Aim Esophageal obstruction is a common occurrence and a serious condition in camels. This study aimed to assess the effects of mineral deficiency on esophageal obstruction rates in dromedary camels and describe their clinical presentation and treatment outcomes. Materials and Methods Twenty-eight camels were allocated to two groups. Group 1 (control) was composed of 10 sound camels. Group 2 included 18 camels with esophageal obstruction which were based on clinical and imaging evaluations. Hematobiochemical examinations in control and affected camels were compared and statistically analyzed. Results In camels with esophageal obstruction when compared with controls, hematological analyses showed significant increases (p < 0.05) in neutrophils, lymphocytes, and monocytes, along with significantly decreased total white blood counts. Aspartate transaminase, alanine transaminase, alkaline phosphatase, creatine phosphokinase, glucose, albumin, creatinine, and blood urea nitrogen concentrations were significantly higher in affected camels when compared with controls. Furthermore, gamma-glutamyl transferase, globulin, sodium, chloride, cobalt, iron, manganese, and selenium concentrations were significantly reduced. Affected camels were treated by stomach tube or surgery and were completely recovered, except for one camel with an esophageal fistula. Conclusion A lack of trace elements could have a significant role in esophageal obstruction in dromedaries. Clinical, ultrasonographic, and hematobiochemical evaluations are useful for the accurate diagnosis, prognosis, and treatment of esophageal obstruction in camels.
Collapse
Affiliation(s)
- Madeh Sadan
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, P.O. Box 51452, Saudi Arabia
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
| | - Sabry El-Khodery
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Saleh Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Qassim, P.O Box 51452, Saudi Arabia
| | - Fahd Alsobayil
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, P.O. Box 51452, Saudi Arabia
| | - El-Sayed El-Shafaey
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, P.O. Box 51452, Saudi Arabia
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| |
Collapse
|
8
|
Karnachuk OV, Panova IA, Panov VL, Ikkert OP, Kadnikov VV, Rusanov II, Avakyan MR, Glukhova LB, Lukina AP, Rakitin AV, Begmatov S, Beletsky AV, Pimenov NV, Ravin NV. Active Sulfate-Reducing Bacterial Community in the Camel Gut. Microorganisms 2023; 11:microorganisms11020401. [PMID: 36838366 PMCID: PMC9963290 DOI: 10.3390/microorganisms11020401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
The diversity and activity of sulfate-reducing bacteria (SRB) in the camel gut remains largely unexplored. An abundant SRB community has been previously revealed in the feces of Bactrian camels (Camelus bactrianus). This study aims to combine the 16S rRNA gene profiling, sulfate reduction rate (SRR) measurement with a radioactive tracer, and targeted cultivation to shed light on SRB activity in the camel gut. Fresh feces of 55 domestic Bactrian camels grazing freely on semi-arid mountain pastures in the Kosh-Agach district of the Russian Altai area were analyzed. Feces were sampled in early winter at an ambient temperature of -15 °C, which prevented possible contamination. SRR values measured with a radioactive tracer in feces were relatively high and ranged from 0.018 to 0.168 nmol S cm-3 day-1. The 16S rRNA gene profiles revealed the presence of Gram-negative Desulfovibrionaceae and spore-forming Desulfotomaculaceae. Targeted isolation allowed us to obtain four pure culture isolates belonging to Desulfovibrio and Desulforamulus. An active SRB community may affect the iron and copper availability in the camel intestine due to metal ions precipitation in the form of sparingly soluble sulfides. The copper-iron sulfide, chalcopyrite (CuFeS2), was detected by X-ray diffraction in 36 out of 55 analyzed camel feces. In semi-arid areas, gypsum, like other evaporite sulfates, can be used as a solid-phase electron acceptor for sulfate reduction in the camel gastrointestinal tract.
Collapse
Affiliation(s)
- Olga V. Karnachuk
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
- Correspondence:
| | - Inna A. Panova
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Vasilii L. Panov
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Olga P. Ikkert
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Vitaly V. Kadnikov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prosp, bld. 33-2, 119071 Moscow, Russia
| | - Igor I. Rusanov
- Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia
| | - Marat R. Avakyan
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Lubov B. Glukhova
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Anastasia P. Lukina
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Anatolii V. Rakitin
- Laboratory of Biochemistry and Molecular Biology, Tomsk State University, 634050 Tomsk, Russia
| | - Shahjahon Begmatov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prosp, bld. 33-2, 119071 Moscow, Russia
| | - Alexey V. Beletsky
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prosp, bld. 33-2, 119071 Moscow, Russia
| | - Nikolai V. Pimenov
- Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia
| | - Nikolai V. Ravin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prosp, bld. 33-2, 119071 Moscow, Russia
| |
Collapse
|