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Kaseja K, Mucha S, Yates J, Smith E, Banos G, Conington J. Genome-wide association study of health and production traits in meat sheep. Animal 2023; 17:100968. [PMID: 37738702 DOI: 10.1016/j.animal.2023.100968] [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: 04/03/2023] [Revised: 08/11/2023] [Accepted: 08/25/2023] [Indexed: 09/24/2023] Open
Abstract
Genotypes are currently widely used in animal breeding programmes to enhance the speed of genetic progress. With sufficient data, a Genome-Wide Association Study (GWAS) can be performed to identify informative markers. The aim of this study was to investigate the genetic background of health (footrot and mastitis) and production (birth weight, weaning weight, scan weight, and fat and muscle depth) traits using the available phenotypic and Single Nucleotide Polymorphism (SNP) data collected on the UK Texel sheep population. Initially, 10 193 genotypes were subject to quality control, leaving 9 505 genotypes for further analysis. Selected genotypes, recorded on four different Illumina chip types from low density (15 k SNPs) to high density (606 006 SNPs), were imputed to a subset of 45 686 markers from 50 k array, distributed on 27 chromosomes. Phenotypes collected on 32 farms across the UK for footrot and mastitis and extracted from the UK National database (iTexel) for the production traits were used along with pre-estimated variance components to obtain de-regressed breeding values and used to perform GWAS. Results showed three SNPs being significant on the genome-wise level ('OAR8_62240378.1' on chromosome 8 for birth weight, 's14444.1' on chromosome 19 for weaning weight and 's65197.1' on chromosome 23 for scan weight). Fourteen subsequent SNPs were found to be significant at the chromosome-wise level. These SNPs are located within or close to previously reported QTLs impacting on animal health (such as faecal egg count or somatic cell count) and production (such as body or carcass weight and fat amount). These results indicate that the studied traits are highly polygenic with complex genetic architecture.
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Affiliation(s)
- K Kaseja
- SRUC Easter Bush, Roslin Institute Building, Edinburgh EH25 9RG, UK.
| | - S Mucha
- SRUC Easter Bush, Roslin Institute Building, Edinburgh EH25 9RG, UK
| | - J Yates
- The British Texel Sheep Society, Stoneleigh Park, Warwickshire CV8 2LG, UK
| | - E Smith
- The British Texel Sheep Society, Stoneleigh Park, Warwickshire CV8 2LG, UK
| | - G Banos
- SRUC Easter Bush, Roslin Institute Building, Edinburgh EH25 9RG, UK
| | - J Conington
- SRUC Easter Bush, Roslin Institute Building, Edinburgh EH25 9RG, UK
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Liu X, Huang C, Jiang T, Sun X, Zhan S, Zhong T, Guo J, Dai D, Wang Y, Li L, Zhang H, Wang L. LncDGAT2 is a novel positive regulator of the goat adipocyte thermogenic gene program. Int J Biol Macromol 2023; 245:125465. [PMID: 37355065 DOI: 10.1016/j.ijbiomac.2023.125465] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 03/29/2023] [Accepted: 06/14/2023] [Indexed: 06/26/2023]
Abstract
Brown and beige adipose thermogenesis are important for newborn mammals to maintain their body temperature. In addition, these thermogenic fats are regulated by multiple molecular interactions. How the long non-coding RNAs (lncRNAs) regulate adipose thermogenesis in newborn mammals upon cold exposure remains unexplored. Here, we identified lncRNAs induced by cold exposure in brown adipose tissue (BAT) of newborn goats and found that lncDGAT2 was enriched in BAT after cold exposure. Functional studies revealed that lncDGAT2 promoted brown and white adipocyte differentiation as well as thermogenic gene expression. Additionally, PRDM4 directly bound the lncDGAT2 promoter to activate the transcription of lncDGAT2 and the PRDM4-lncDGAT2 axis was essential for the brown adipocyte thermogenic gene program. These findings provide evidence for lncRNA and transcription factor regulatory functions in controlling adipose thermogenesis and energy metabolism of newborn goats.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Chunhua Huang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Tingting Jiang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Xueliang Sun
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Siyuan Zhan
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Tao Zhong
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Jiazhong Guo
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Dinghui Dai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Li Li
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Hongping Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China
| | - Linjie Wang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, Sichuan, PR China.
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RNAseq Analysis of Brown Adipose Tissue and Thyroid of Newborn Lambs Subjected to Short-Term Cold Exposure Reveals Signs of Early Whitening of Adipose Tissue. Metabolites 2022; 12:metabo12100996. [PMID: 36295898 PMCID: PMC9607389 DOI: 10.3390/metabo12100996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/03/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
During the early postnatal period, lambs have the ability to thermoregulate body temperature via non-shivering thermogenesis through brown adipose tissue (BAT), which soon after birth begins to transform into white adipose tissue. An RNA seq approach was used to characterize the transcriptome of BAT and thyroid tissue in newborn lambs exposed to cold conditions. Fifteen newborn Romney lambs were selected and divided into three groups: group 1 (n = 3) was a control, and groups 2 and 3 (n = 6 each) were kept indoors for two days at an ambient temperature (20–22 °C) or at a cold temperature (4 °C), respectively. Sequencing was performed using a paired-end strategy through the BGISEQ-500 platform, followed by the identification of differentially expressed genes using DESeq2 and an enrichment analysis by g:Profiler. This study provides an in-depth expression network of the main characters involved in the thermogenesis and fat-whitening mechanisms that take place in the newborn lamb. Data revealed no significant differential expression of key thermogenic factors such as uncoupling protein 1, suggesting that the heat production peak under cold exposure might occur so rapidly and in such an immediate way that it may seem undetectable in BAT by day three of life. Moreover, these changes in expression might indicate the start of the whitening process of the adipose tissue, concluding the non-shivering thermogenesis period.
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Graña-Baumgartner A, Dukkipati VSR, Biggs PJ, Kenyon PR, Blair HT, López-Villalobos N, Ross AB. Mass Spectrometry-Based Lipidomics of Brown Adipose Tissue and Plasma of New-Born Lambs Subjected to Short-Term Cold Exposure. Animals (Basel) 2022; 12:ani12202762. [PMID: 36290148 PMCID: PMC9597848 DOI: 10.3390/ani12202762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/23/2022] [Accepted: 10/08/2022] [Indexed: 12/05/2022] Open
Abstract
During cold exposure, brown adipose tissue (BAT) holds the key mechanism in the generation of heat, thus inducing thermogenic adaptation in response to cooler environmental changes. This process can lead to a major lipidome remodelling in BAT, where the increase in abundance of many lipid classes plays a significant role in the thermogenic mechanisms for heat production. This study aimed to identify different types of lipids, through liquid chromatography-mass spectrometry (LC-MS), in BAT and plasma during a short-term cold challenge (2-days), or not, in new-born lambs. Fifteen new-born Romney lambs were selected randomly and divided into three groups: Group 1 (n = 3) with BAT and plasma obtained within 24 h after birth, as a control; Group 2 (n = 6) kept indoors for two days at an ambient temperature (20-22 °C) and Group 3 (n = 6) kept indoors for two days at a cold temperature (4 °C). Significant differences in lipid composition of many lipid categories (such as glycerolipids, glycerophospholipids, sphingolipids and sterol lipids) were observed in BAT and plasma under cold conditions, compared with ambient conditions. Data obtained from the present study suggest that short-term cold exposure induces profound changes in BAT and plasma lipidome composition of new-born lambs, which may enhance lipid metabolism via BAT thermogenic activation and adipocyte survival during cold adaptation. Further analysis on the roles of these lipid changes, validation of potential biomarkers for BAT activity, such as LPC 18:1 and PC 35:6, should contribute to the improvement of new-born lamb survival. Collectively, these observations help broaden the knowledge on the variations of lipid composition during cold exposure.
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Affiliation(s)
- Andrea Graña-Baumgartner
- School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Venkata S. R. Dukkipati
- School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
- School of Veterinary Science, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
- Correspondence: (V.S.R.D.); (A.B.R.)
| | - Patrick J. Biggs
- School of Veterinary Science, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Paul R. Kenyon
- School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Hugh T. Blair
- School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Nicolás López-Villalobos
- School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Alastair B. Ross
- Proteins and Metabolites, AgResearch Ltd., Lincoln 7674, New Zealand
- Correspondence: (V.S.R.D.); (A.B.R.)
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Ali A, Javed K, Zahoor I, Anjum KM, Sharif N. Identification of polymorphisms in the MSTN and ADRB3 genes associated with growth and ultrasound carcass traits in Kajli sheep. Anim Biotechnol 2021:1-16. [PMID: 34775903 DOI: 10.1080/10495398.2021.2000428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The aim of this investigation was to find single nucleotide polymorphisms (SNPs) in the myostatin (MSTN) and the beta-3 adrenergic receptor (ADRB3) genes associated with growth and ultrasound carcass traits in Kajli sheep. The five growth traits were birth weight (BWT-EBV), 120-day weight (120DWT-EBV), 180-day weight (180DWT-EBV), 270-day weight (270DWT-EBV), and 365-day weight (365DWT-EBV). The three ultrasound carcass traits were width (WLD) and depth of longissimus dorsi (DLD) and back fat thickness (BFT). The analysis of the MSTN sequence revealed one non-synonymous substitution (c.197T > A) in exon 1, one single nucleotide substitution (c.373 + 18G > T) in intron 1, and one synonymous substitution (c.861T > A) in exon 3. However, there were four single nucleotide synonymous substitutions (c.130C > T, c.294C > G, c.579G > T, and c.654C > G) in exon 1 of the ADRB3 gene. All the SNPs in the MSTN gene, except for c.373 + 18G > T, were in Hardy-Weinberg Equilibrium (HWE). Conversely, none of the SNPs found in ADRB3 were in HWE. Two of the MSTN SNPs (c.197T > A and c.373 + 18G > T) had significant associations with all evaluated growth and ultrasound carcass traits. The SNPs c.130C > T and c.294C > G in ADRB3 were significantly associated with 180DWT-EBV. Collectively, these findings indicate that several SNPs in the studied genes were significantly related to growth and carcass traits in Kajli sheep.
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Affiliation(s)
- Asad Ali
- Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Khalid Javed
- Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Imran Zahoor
- Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Khalid Mahmood Anjum
- Department of Wildlife & Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Numan Sharif
- Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Mei CG, Gui LS, Wang HC, Tian WQ, Li YK, Zan LS. Polymorphisms in adrenergic receptor genes in Qinchuan cattle show associations with selected carcass traits. Meat Sci 2017; 135:166-173. [PMID: 29040964 DOI: 10.1016/j.meatsci.2017.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 09/18/2017] [Accepted: 10/09/2017] [Indexed: 10/18/2022]
Abstract
The beta-adrenergic receptors coded by the ADRB1, ADRB2 and ADRB3 genes play important roles in mediating metabolic effects, especially lipolysis, insulin resistance and energy balance. This study investigated the expression levels of these three genes in different tissues of Qinchuan cattle by real-time polymerase chain reaction (RT-PCR). Expressed levels of RNA from the ADRB2 gene were generally much higher than for ADRB1 and ADRB3. ADRB1 and ADRB2 expression levels were highest in subcutaneous fat and lower in muscle, whereas ADRB3 expression was higher in muscle tissue. Eight single nucleotide polymorphisms (SNPs) were discovered in 503 Qinchuan cattle by DNA sequencing, containing three missense mutations (g.1148G>C in ADRB1, g.1293C>T and g.1311T>C in ADRB2), four synonymous mutations (g.1054T>C, g.1122C>T and g.1143G>T in ADRB1 and g.506A>G in ADRB3), as well as one mutation in 3'untranslated region (3'UTR) (g.2799G>A in ADRB3). Interestingly, five of them were located in regions predicted to contain multiple repeats of CG nucleotides (CpG islands). Association analysis showed relationships between most of those SNPs or combined haplotypes and carcass traits of Qinchuan cattle. This study association analysis suggests that polymorphisms in these genes might be useful for selection in beef cattle breeding.
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Affiliation(s)
- Chu-Gang Mei
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Lin-Sheng Gui
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Hong-Cheng Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Wan-Qiang Tian
- Yangling Vocational & Technical College, Yangling 712100, China
| | - Yao-Kun Li
- College of Animal Science and Technology, South China Agricultural University, Guangzhou 510642, China
| | - Lin-Sen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China; National Beef Cattle Improvement Center, Yangling 712100, China.
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Plush KJ, Brien FD, Hebart ML, Hynd PI. Thermogenesis and physiological maturity in neonatal lambs: a unifying concept in lamb survival. ANIMAL PRODUCTION SCIENCE 2016. [DOI: 10.1071/an15099] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Lamb mortality represents reproductive wastage and an animal welfare concern. While lambs are thought to be at a thermogenic advantage following birth in comparison to other species, death from exposure can still be a major contributor to lamb mortality, largely because of the inclement conditions often prevailing at lambing. For this reason, thermogenesis has been studied extensively in neonatal lambs. Heat is produced in the neonatal lamb by shivering and non-shivering thermogenesis. The latter is heat generated by metabolism of brown adipose tissue (BAT) found largely in the thorax and peri-renal areas of the newborn lamb. Brown adipose tissue differs from normal adipose tissue in that it contains densely packed mitochondria, a high cytochrome c content and a vast vascular network. Heat is generated in BAT by uncoupling of the proton conductance mechanism from ATP production, resulting in heat production instead of stored energy. The ability of lambs to resist cooling differs among individuals and this is likely to be due to both genetic and phenotypic factors. The heritability of cold resistance is moderate-to-high and polymorphic gene markers associated with energy homeostasis and cold-related mortality have been identified. Additionally, several aspects of the phenotype of the lamb have been associated with cold resistance. Most relate to properties of the coat, skin and bodyweight, the latter being particularly important, presumably through effects on surface area to volume ratios and subsequent heat loss. The ability of the neonate to achieve the transition from intra- to extra-uterine life has been termed physiological maturity and is associated with the ability to activate appropriate neuro-endocrinological and behavioural changes that are consistent with homeostasis of energy metabolism. Ways to alter physiological maturity of the lamb, such as nutrition, pharmacology and genetic selection, have been identified, and while these show promising results with regards to thermoregulation, a key limitation of their application has been the lack of a repeatable, representative model of neonatal cold stress. An estimation of the non-shivering component potential of a lamb’s ability to thermoregulate can be derived from norepinephrine challenges, but more useful models of real-world cold stress are climate chambers or controlled water bath tests. Further use of repeatable test models such as these with appropriate neuroendocrine and metabolic metrics will identify key components and markers of physiological maturity associated with lamb thermogenesis and survival.
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Malau-Aduli AEO, Kashani A. Molecular genetics-nutrition interactions in the expression of AANAT, ADRB3, BTG2 and FASN genes in the heart, kidney and liver of Australian lambs supplemented with Spirulina (Arthrospira platensis). Genes Genomics 2015. [DOI: 10.1007/s13258-015-0294-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kashani A, Holman BWB, Nichols PD, Malau-Aduli AEO. Effect of dietary supplementation with Spirulina on the expressions of AANAT, ADRB3, BTG2 and FASN genes in the subcutaneous adipose and Longissimus dorsi muscle tissues of purebred and crossbred Australian sheep. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2015; 57:8. [PMID: 26290728 PMCID: PMC4540301 DOI: 10.1186/s40781-015-0047-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/12/2015] [Indexed: 01/27/2023]
Abstract
BACKGROUND The demand for healthy, lean and consistent meat products containing low saturated fatty acid content and high quality polyunsaturated fatty acids (PUFA), especially long-chain (≥C20) omega-3 PUFA, has increased in recent times. Fat deposition is altered by both the genetic background and dietary supplements, and this study aimed to assess the effect of dietary Spirulina supplementation levels on the mRNA expression patterns of genes controlling lipid metabolism in the subcutaneous adipose tissue (SAT) and Longissimus dorsi (ld) muscle of Australian crossbred sheep. METHODS Twenty-four weaned lambs belonging to four breeds under the same management conditions were maintained on ryegrass pasture and fed three levels of Spirulina supplement (control, low and high). In terms of nutrient composition, Spirulina is a nutrient-rich supplement that contains all essential amino acids, vitamins and minerals. It also is a rich source of carotenoids and fatty acids, especially gamma-linolenic acid (GLA) that infer health benefits. After slaughter, subcutaneous adipose tissue (SAT) and ld samples were subjected to mRNA extraction and reverse transcription using quantitative polymerase chain reaction (RT-qPCR) to assess the mRNA expression levels of the Aralkylamine N-acetyltransferase (AANAT), Adrenergic beta-3 receptor (ADRB3), B-cell translocation gene 2 (BTG2) and Fatty acid synthase (FASN) genes, which are associated with lipid metabolism. RESULTS Both low and high Spirulina supplementation levels strongly up-regulated the transcription of all the selected genes in both SAT and ld tissues (mostly in the subcutaneous adipose), but sheep breed and sex did not influence the gene expression patterns in these tissues. CONCLUSIONS The evidence indicates that high Spirulina supplementation level resulted in a decrease in intramuscular fat content in Australian purebred and crossbred sheep due to the enhanced production of melatonin in sheep muscle tissues and strong up-regulation of mRNA expression of BTG2 in SAT which negatively affected fat deposition. In contrast, low Spirulina supplementation level strongly up-regulated the ADRB3 and FASN genes responsible for fat production. These findings are consistent with the observed phenotypic data suggesting that low Spirulina supplementation level can increase lamb production, with higher long-chain PUFA content.
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Affiliation(s)
- Arash Kashani
- />Animal Science and Genetics, Tasmanian Institute of Agriculture, School of Land and Food, Faculty of Science, Engineering and Technology, University of Tasmania, Private Bag 54 Sandy Bay, Hobart, Tasmania 7001 Australia
| | - Benjamin William Behrens Holman
- />New South Wales Department of Primary Industries, Centre for Red Meat and Sheep Development, Cowra, 2794 New South Wales Australia
| | - Peter David Nichols
- />CSIRO Food and Nutrition, Oceans and Atmosphere Flagships, Hobart, TAS 7001, Australia
| | - Aduli Enoch Othniel Malau-Aduli
- />Animal Science and Genetics, Tasmanian Institute of Agriculture, School of Land and Food, Faculty of Science, Engineering and Technology, University of Tasmania, Private Bag 54 Sandy Bay, Hobart, Tasmania 7001 Australia
- />Veterinary and Biomedical Sciences, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811 Australia
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Hergenhan RL, Hinch GN, Ferguson DM. Sire effects on neonatal lamb vigour and following-behaviour. ANIMAL PRODUCTION SCIENCE 2014. [DOI: 10.1071/an13223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The ability of the lamb to maintain contact with the ewe as she moves away from the birth site is critical to the lamb’s subsequent survival. If this contact is compromised then lamb loss is likely to occur due to starvation/mismothering. This study uses sires from the Sheep CRC Information Nucleus Flock to compare the effect of selection of sires within the Merino breed for high or low losses due to starvation/mismothering on neonatal lamb vigour. Lamb vigour was measured using conventional measures of time to perform early neonatal behaviours, early physiological measures (rectal temperatures and blood glucose), and performance in a modified barrier test while under physiological stress from cold exposure. Lambs were exposed to cold at a time (4–6 h after birth) when the ewe is likely to be moving away from the birth site and therefore when losses due to starvation/mismothering are likely to begin. Progeny from the high-loss sires were significantly (P < 0.05) slower to attempt to stand, and to stand, than progeny from the no-loss sires and tended to be slower to reach the udder and suckle (P = 0.07). Lambs from the no-loss group also had a significantly (P < 0.01) higher vigour score than the high-loss group. There was no effect of sire group on the performance of lambs in the modified barrier test; however, cold-treated lambs performed poorly in the test compared with control lambs. It was concluded that sire can have an effect on lamb vigour, but it does not necessarily translate into effects on later following-behaviour while under stressful conditions.
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Pope M, Budge H, Symonds ME. The developmental transition of ovine adipose tissue through early life. Acta Physiol (Oxf) 2014; 210:20-30. [PMID: 23351024 DOI: 10.1111/apha.12053] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 11/14/2012] [Accepted: 12/13/2012] [Indexed: 11/30/2022]
Abstract
AIM Hypothermia induced by cold exposure at birth is prevented in sheep by the rapid onset of non-shivering thermogenesis in brown adipose tissue (BAT). Changes in adipose tissue composition in early life are therefore essential for survival but also influence adiposity in later life and were thus examined in detail during early development. METHODS Changes in adipose composition were investigated by immunohistochemistry and qRT-PCR between the period from the first appearance of adipose in the mid gestation foetus, through birth and up to 1 month of age. RESULTS We identified four distinct phases of development, each associated with pronounced changes in tissue histology and in distribution of the BAT specific uncoupling protein (UCP)1. At mid gestation, perirenal adipose tissue exhibited a dense proliferative, structure marked by high expression of KI-67 but with no UCP1 or visible lipid droplets. By late gestation large quantities of UCP1 were present, lipid storage was evident and expression of BAT-related genes were abundant (e.g. prolactin and β3 receptors). Subsequently, within 12 h of birth, the depot was largely depleted of lipid and expression of genes such as UCP1, PGC1α, CIDEA peaked. By 30 days UCP1 was undetectable and the depot contained large lipid droplets; however, genes characteristic of BAT (e.g. PRDM16 and BMP7) and most characteristic of white adipose tissue (e.g. leptin and RIP140) were still abundant. CONCLUSION Adipose tissue undergoes profound compositional changes in early life, of which an increased understanding could offer potential interventions to retain BAT in later life.
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Affiliation(s)
- M. Pope
- Early Life Nutrition Research Unit, Academic Division of Child Health; School of Medicine, University Hospital, The University of Nottingham; Nottingham UK
| | - H. Budge
- Early Life Nutrition Research Unit, Academic Division of Child Health; School of Medicine, University Hospital, The University of Nottingham; Nottingham UK
| | - M. E. Symonds
- Early Life Nutrition Research Unit, Academic Division of Child Health; School of Medicine, University Hospital, The University of Nottingham; Nottingham UK
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Yang G, Zhou H, Forrest RH, Fang Q, Luo Y, Hickford JGH. Halplotypes of the ovine ADRB3 gene (ADRB3) and their association with post-weaning growth in New Zealand Suffolk sheep. Mol Biol Rep 2013; 40:4805-10. [DOI: 10.1007/s11033-013-2576-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 04/29/2013] [Indexed: 12/31/2022]
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Symonds ME. Brown adipose tissue growth and development. SCIENTIFICA 2013; 2013:305763. [PMID: 24278771 PMCID: PMC3820149 DOI: 10.1155/2013/305763] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 02/28/2013] [Indexed: 05/27/2023]
Abstract
Brown adipose tissue is uniquely able to rapidly produce large amounts of heat through activation of uncoupling protein (UCP) 1. Maximally stimulated brown fat can produce 300 watts/kg of heat compared to 1 watt/kg in all other tissues. UCP1 is only present in small amounts in the fetus and in precocious mammals, such as sheep and humans; it is rapidly activated around the time of birth following the substantial rise in endocrine stimulatory factors. Brown adipose tissue is then lost and/or replaced with white adipose tissue with age but may still contain small depots of beige adipocytes that have the potential to be reactivated. In humans brown adipose tissue is retained into adulthood, retains the capacity to have a significant role in energy balance, and is currently a primary target organ in obesity prevention strategies. Thermogenesis in brown fat humans is environmentally regulated and can be stimulated by cold exposure and diet, responses that may be further modulated by photoperiod. Increased understanding of the primary factors that regulate both the appearance and the disappearance of UCP1 in early life may therefore enable sustainable strategies in order to prevent excess white adipose tissue deposition through the life cycle.
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Affiliation(s)
- Michael E. Symonds
- Early Life Nutrition Research Unit, Academic Division of Child Health, School of Clinical Sciences, University Hospital, The University of Nottingham, Nottingham NG7 2UH, UK
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Samadi, Jois M, Dunshea F, Leury B. The β3-adrenergic agonist (BRL35135A) improves feed efficiency and decreases visceral but not subcutaneous fat in lambs. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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SNP variation in ADRB3 gene reflects the breed difference of sheep populations. Mol Biol Rep 2012; 39:8395-403. [DOI: 10.1007/s11033-012-1690-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Accepted: 06/05/2012] [Indexed: 10/28/2022]
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Yang G, Hickford JG, Zhou H, Fang Q, Forrest RH. Extended Haplotype Analysis of Ovine ADRB3 Using Polymerase Chain Reaction Single Strand Conformational Polymorphism on Two Regions of the Gene. DNA Cell Biol 2011; 30:445-8. [DOI: 10.1089/dna.2010.1175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Guo Yang
- Faculty of Agriculture and Life Science, Lincoln University, Lincoln, New Zealand
| | - Jon G.H. Hickford
- Faculty of Agriculture and Life Science, Lincoln University, Lincoln, New Zealand
| | - Huitong Zhou
- Faculty of Agriculture and Life Science, Lincoln University, Lincoln, New Zealand
| | - Qian Fang
- Faculty of Agriculture and Life Science, Lincoln University, Lincoln, New Zealand
| | - Rachel H. Forrest
- Faculty of Health and Sport Sciences, Eastern Institute of Technology, Napier, New Zealand
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Samadi, Jois M, Dunshea FR, Leury BJ. The β3-adrenergic agonist (BRL35135A) acutely increases oxygen consumption and plasma intermediate metabolites in sheep. ANIMAL PRODUCTION SCIENCE 2011. [DOI: 10.1071/an10019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
There is evidence that an atypical adrenoreceptor subtype is involved in mediating some of the physiological effects of catecholamines, particularly in some adipose tissue sites. Therefore, three experiments were conducted to determine the metabolic and energetic responses to oral administration of the purported β3-agonist BRL35135A in ruminant lambs. The post-prandial increase in O2 consumption (0.109 versus 0.139 L/min) and CO2 production (0.102 versus 0.127 L/min) at 30 min after feeding was greater (P < 0.05) in the lambs receiving 5 mg of the BRL35135A. Treatment × time interactions over the period between –50 and 220 min indicate significant increases in plasma non-esterified fatty acids (P < 0.001), glucose (P < 0.001) and lactate (P = 0.024) in lambs consuming a single oral dose of 5 mg BRL35135A. In a subsequent experiment there were similar interactions over the period between –120 and 1440 min for non-esterified fatty acids (P < 0.001), glucose (P < 0.001) and lactate (P < 0.001) in lambs consuming a lower oral dose of 1 mg BRL35135A. The effects of BRL35135A on plasma non-esterified fatty acids (P = 0.95), glucose (P = 0.84) and lactate (P = 0.68) were not modified by the β1- and β2-adrenergic antagonist alprenolol suggesting that the effects were mediated via β3-adrenergic receptor subtypes. In conclusion, these experiments indicate that BRL35135A is acutely active in sheep when given with feed, as indicated by increases in respiratory gas exchange and plasma metabolite concentrations.
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McKenzie GW, Abbott J, Zhou H, Fang Q, Merrick N, Forrest RH, Sedcole JR, Hickford JG. Genetic diversity of selected genes that are potentially economically important in feral sheep of New Zealand. Genet Sel Evol 2010; 42:43. [PMID: 21176141 PMCID: PMC3025881 DOI: 10.1186/1297-9686-42-43] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Accepted: 12/21/2010] [Indexed: 11/10/2022] Open
Abstract
Background Feral sheep are considered to be a source of genetic variation that has been lost from their domestic counterparts through selection. Methods This study investigates variation in the genes KRTAP1-1, KRT33, ADRB3 and DQA2 in Merino-like feral sheep populations from New Zealand and its offshore islands. These genes have previously been shown to influence wool, lamb survival and animal health. Results All the genes were polymorphic, but no new allele was identified in the feral populations. In some of these populations, allele frequencies differed from those observed in commercial Merino sheep and other breeds found in New Zealand. Heterozygosity levels were comparable to those observed in other studies on feral sheep. Our results suggest that some of the feral populations may have been either inbred or outbred over the duration of their apparent isolation. Conclusion The variation described here allows us to draw some conclusions about the likely genetic origin of the populations and selective pressures that may have acted upon them, but they do not appear to be a source of new genetic material, at least for these four genes.
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Affiliation(s)
- Grant W McKenzie
- Department of Agricultural Science, Faculty of Agriculture and Life Sciences, PO Box 84, Lincoln University, Lincoln 7647, New Zealand
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Hu J, Zhou H, Smyth A, Luo Y, Hickford JGH. Polymorphism of the bovine ADRB3 gene. Mol Biol Rep 2010; 37:3389-92. [PMID: 20091127 DOI: 10.1007/s11033-009-9927-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Accepted: 11/16/2009] [Indexed: 10/20/2022]
Abstract
The β(3)-adrenergic receptor (ADRB3) is predominantly expressed in white and brown adipose tissue and mediates the lipolytic and thermogenic effects of high catecholamine concentrations. Variation in the ADRB3 gene (ADRB3) has been associated with obesity and the earlier onset of non-insulin-dependent diabetes mellitus in some ethnic groups, as well as some production traits of sheep, but to date variation of bovine ADRB3 has not been reported. In this study, variation in the promoter region of bovine ADRB3 was investigated in 737 cattle by polymerase chain reaction-single strand conformational polymorphism (PCR-SSCP) analysis. Six PCR-SSCP patterns representing six allelic variations and containing four single nucleotide polymorphisms (SNPs) and three nucleotide deletions/insertions were observed. Allele A was the most common allele (93.83%), whereas alleles C, D, E and F were rare (0.07, 1.09, 0.41, and 0.34%, respectively). The variation identified here might have an impact on both the function and level of expression of bovine ADRB3.
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Affiliation(s)
- Jiang Hu
- Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, People's Republic of China
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21
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HIROSE K, NAKAMURA M, TAKIZAWA T, FUKAWA K, ITO T, UEDA M, SASAKI T, TANAKA K. An insertion/deletion variant of a thymine base in exon 2 of the porcine beta 3-adrenergic receptor gene associated with loin eye muscle area. Anim Sci J 2009; 80:624-30. [DOI: 10.1111/j.1740-0929.2009.00686.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Cloete SWP, Misztal I, Olivier JJ. Genetic parameters and trends for lamb survival and birth weight in a Merino flock divergently selected for multiple rearing ability1. J Anim Sci 2009; 87:2196-208. [DOI: 10.2527/jas.2008-1065] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Forrest RH, Itenge-Mweza TO, McKenzie GW, Zhou H, Frampton CM, Hickford JGH. Polymorphism of the ovine beta3-adrenergic receptor gene (ADRB3) and its association with wool mean staple strength and yield. Anim Genet 2009; 40:958-62. [PMID: 19531115 DOI: 10.1111/j.1365-2052.2009.01926.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigated the possibility that variation in ovine ADRB3 is associated with various wool traits, in particular mean staple strength (MSS). Polymerase chain reaction-single strand conformational polymorphism analysis of part of the ADRB3 intron was used to genotype 695 Merino lambs born on three farms in the South Island of New Zealand and which were shorn as 2-tooths. For each fleece, MSS, mean fibre diameter, mean staple length and yield were measured. The results from mixed-effects models and half-sib analyses suggest that ADRB3 alleles A and D have a negative impact on some wool traits, whereas ADRB3 alleles C and E appear to have a positive impact, with allele C potentially having a greater impact than allele E on MSS. This variation in the ADRB3 may assist in the genetic selection for increased MSS and yield in Merino sheep.
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Affiliation(s)
- R H Forrest
- Faculty of Health and Sport Sciences, Eastern Institute of Technology, Private Bag 1201, Napier, New Zealand
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Yang G, Zhou H, Hu J, Luo Y, Hickford JGH. Extensive Diversity of the ADRB3 Gene in Chinese Sheep Identified by PCR-SSCP. Biochem Genet 2009; 47:498-502. [DOI: 10.1007/s10528-009-9248-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2008] [Accepted: 05/18/2009] [Indexed: 11/30/2022]
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25
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Horrell A, Forrest RHJ, Zhou H, Fang Q, Hickford JGH. Association of theADRB3gene with birth weight and growth rate to weaning in New Zealand Romney sheep. Anim Genet 2009; 40:251. [DOI: 10.1111/j.1365-2052.2008.01807.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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