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Wang Y, Wang Z, Hu R, Peng Q, Xue B, Wang L. Comparison of carcass characteristics and meat quality between Simmental crossbred cattle, cattle-yaks and Xuanhan yellow cattle. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:3927-3932. [PMID: 33345324 DOI: 10.1002/jsfa.11032] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 11/02/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The study compared the growth performance, carcass characteristics and meat quality of steers of Xuanhan yellow cattle, Simmental crossbreed cattle (Simmental × Xuanhan yellow cattle) and cattle-yak (Jersey × yak). All steers were feed with the same diet from 6 months until slaughter at 30 months. The longissimus dorsi muscle was used to compare the meat quality traits. RESULTS By comparison, Simmental crossbreed cattle had higher growth performance (P < 0.05) and carcass characteristics (P < 0.05); cattle-yak had higher value of a*, b* of meat color (P < 0.05) and higher protein contents of meat (P < 0.05); Xuanhan yellow cattle had higher water holding capacity (P < 0.05) and lower shear force (P < 0.05). CONCLUSIONS The results show that Simmental crossbred cattle had better meat performance and provided low-fat meat with a beneficial fatty acid composition, but with lower meat quality; cattle-yaks provided greater meat color and higher protein content; Xuanhan yellow cattle provided meat with preferable tenderness. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Yongjie Wang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
| | - Zhisheng Wang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
| | - Rui Hu
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
| | - Quanhui Peng
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
| | - Bai Xue
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
| | - Lizhi Wang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, China
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Pećina M, Ivanković A. Candidate genes and fatty acids in beef meat, a review. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1991240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mateja Pećina
- Zavod za specijalno stočarstvo, Sveučilište u Zagrebu Agronomski fakultet, Zagreb, Hrvatska
| | - Ante Ivanković
- Zavod za specijalno stočarstvo, Sveučilište u Zagrebu Agronomski fakultet, Zagreb, Hrvatska
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Bordonaro S, Tumino S, Marletta D, De Angelis A, Di Paola F, Avondo M, Valenti B. Effect of GH p.L127V Polymorphism and Feeding Systems on Milk Production Traits and Fatty Acid Composition in Modicana Cows. Animals (Basel) 2020; 10:E1651. [PMID: 32937968 PMCID: PMC7552311 DOI: 10.3390/ani10091651] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/05/2020] [Accepted: 09/11/2020] [Indexed: 11/19/2022] Open
Abstract
Growth hormone participates in the regulation of lactation and lipid metabolism. A trial study was conducted to evaluate the effects of genetic polymorphism at GH p.L127V and its interaction with feeding system (extensive, EX; semi-intensive, SI) on milk traits and fatty acids composition in Modicana cows. In the semi-intensive farm (SI) diet consisted of hay, concentrate and 2 h of grazing. In the extensive farm (EX) feeding consisted in 8 h of grazing and hay. The frequencies of LL, LV and VV genotypes were, respectively: 0.64, 0.34, 0.02. GH polymorphism and its interaction with feeding system did not influence milk yield and composition. Cows carrying LL genotype produced milk with lower 6:0 and 8:0 and higher 16:1 c9 and 18:1 c9, total UFA and total MUFA. Feeding significantly affected fatty acids: in EX cows lower SFA and higher PUFA and UFA were found, compared to SI cows. The lower, more favorable atherogenic index of milk from EX system was coherent with the improved healthy characteristics of milk from animals fed almost exclusively on pasture. A significant interaction genotype x feeding system was evident for 18:1, higher in the LL cows only in the EX system, but not in the SI system.
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Affiliation(s)
- Salvatore Bordonaro
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Serena Tumino
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Donata Marletta
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Anna De Angelis
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Fortunato Di Paola
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Marcella Avondo
- Department of Agriculture, Food and Environment, University of Catania, Via Valdisavoia 5, 95123 Catania, Italy; (S.B.); (S.T.); (D.M.); (A.D.A.); (F.D.P.)
| | - Bernardo Valenti
- Department of agricultural, food and environmental Science, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy;
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Kiyici JM, Akyüz B, Kaliber M, Arslan K, Aksel EG, Cinar MU. Association of GH, STAT5A, MYF5 gene polymorphisms with milk somatic cell count, EC and pH levels of Holstein dairy cattle. Anim Biotechnol 2020; 33:401-407. [PMID: 32749185 DOI: 10.1080/10495398.2020.1800483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This study was conducted to ivnestigate the associations of GH-AluI, STAT5A-AvaI and MYF5-TaqI gene polymorphisms with milk somatic cell count (SCC), electrical conductivity (EC) and pH levels in Holstein dairy cows. For this purpose, 167 blood and 1670 milk samples of 167 Holstein cows in their 2nd lactation were used. There were significant relationships between GH-AluI genotypes and milk EC (p < 0.001) and between STAT5A-AvaI genotypes and milk EC (p = 0.007), but there were not any significant relationships between MYF5 gene polymorphism and the investigated traits (p > 0.05). The greatest EC values were observed in GH-AluI-LV and STAT5A-AvaI-TT-genotyped individuals. Just because of association of EC with mastitis, it was concluded that present GH-AluI and STAT5A-AvaI polymorphisms could be used in further studies to be conducted to improve mastitis resistance and milk quality traits of Holstein dairy cows.
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Affiliation(s)
- Jale Metin Kiyici
- Faculty of Agriculture, Department of Animal Science, Erciyes University, Kayseri, Turkey
| | - Bilal Akyüz
- Faculty of Veterinary Medicine, Department of Genetics, Erciyes University, Kayseri, Turkey
| | - Mahmut Kaliber
- Faculty of Agriculture, Department of Animal Science, Erciyes University, Kayseri, Turkey
| | - Korhan Arslan
- Faculty of Veterinary Medicine, Department of Genetics, Erciyes University, Kayseri, Turkey
| | - Esma Gamze Aksel
- Faculty of Veterinary Medicine, Department of Genetics, Erciyes University, Kayseri, Turkey
| | - Mehmet Ulaş Cinar
- Faculty of Veterinary Medicine, Department of Genetics, Erciyes University, Kayseri, Turkey.,Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
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Shakweer WMES, Abd EL-Rahman HH. Cloning, nucleotide sequencing, and bioinformatics analyses of growth hormone mRNA of Assaf sheep and Boer goats reared in Egypt. J Genet Eng Biotechnol 2020; 18:30. [PMID: 32661950 PMCID: PMC7359211 DOI: 10.1186/s43141-020-00046-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 06/26/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND Identification of molecular characterization of genes underlying livestock productive traits may allow applying advanced biotechnology techniques to improve animal productivity. Growth hormone (GH) controls body growth rate, milk production, reproduction as well as carbohydrate, lipid, and protein metabolism. Therefore, the present study aims to investigate the genetic variations of growth hormone cDNA sequences between Assaf sheep (As_GH) and Boer goat (Bo_GH) that mainly used for genetic improvement in Egypt using bioinformatics analysis. Growth hormone cDNA was isolated from the pituitary gland tissue of Assaf sheep Boer goat and subcloned into pTZ57R/T cloning vector for sequencing. RESULTS Molecular weight of As_GH cDNA was 665 bp and was 774 bp for Bo_GH cDNA. The complete coding sequences (CDS) of As_GH and Bo_GH were registered in the GenBank database under accession number (AC: MH128986 and AC: MG744290, respectively). High homology percentage was observed (99.5%) between AS_GH and Bo_GH protein sequences with one different amino acid in the As_GH protein sequence (Arg194). The protein sequence of As_GH has only one motif signature; Somatotropin_1 from 79 to 112 aa compared to Bo_GH protein sequences and GenBank database that had two motifs signature. The growth hormone cDNA sequence of Assaf sheep has a unique three single nucleotide polymorphisms (SNPs) (A637A638G639) that encodes for arginine (Arg194); this insertion mutation (AAG) was not found in the growth hormone cDNA sequences of Boer goat in the present study and GenBank database breeds. This mutation can be used to develop SNPs markers for Assaf sheep. CONCLUSIONS GH sequence of Assaf and Boer goat is highly conserved and the homogeny in the codon region (99.5%). The Assaf sheep GH sequence has a unique three SNPs that may be used to develop SNPs markers for such breed. Further studies are needed to investigate the genetic variations of growth hormone gene in different sheep and goat breeds in Egypt and document the relationship between these variations and the productive performance of animals.
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Affiliation(s)
- Waleid Mohamed El-Sayed Shakweer
- Animal Production Department, Agricultural and Biological Research, Division, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), Dokki, Giza, P.O. 12622 Egypt
| | - Hashem Hamed Abd EL-Rahman
- Animal Production Department, Agricultural and Biological Research, Division, National Research Centre, 33 El Bohouth St. (Former El-Tahrir St.), Dokki, Giza, P.O. 12622 Egypt
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Metin Kiyici J, Arslan K, Akyuz B, Kaliber M, Aksel EG, Çinar MU. Relationships between polymorphisms of growth hormone, leptin and myogenic factor 5 genes with some milk yield traits in Holstein dairy cows. INT J DAIRY TECHNOL 2018. [DOI: 10.1111/1471-0307.12539] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jale Metin Kiyici
- Faculty of Agriculture Department of Animal Science Erciyes University Kayseri Turkey
| | - Korhan Arslan
- Faculty of Veterinary Medicine Department of Genetics Erciyes University Kayseri Turkey
| | - Bilal Akyuz
- Faculty of Veterinary Medicine Department of Genetics Erciyes University Kayseri Turkey
| | - Mahmut Kaliber
- Faculty of Agriculture Department of Animal Science Erciyes University Kayseri Turkey
| | - Esma Gamze Aksel
- Faculty of Veterinary Medicine Department of Genetics Erciyes University Kayseri Turkey
| | - Mehmet Ulaş Çinar
- Faculty of Agriculture Department of Animal Science Erciyes University Kayseri Turkey
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Association between gene polymorphism of growth hormone and carcass traits in dairy bulls. ACTA ACUST UNITED AC 2016. [DOI: 10.1017/s135772980005195x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractThe contribution of the leucine/valine substitution at amino acid position 127 in the bovine growth hormone (GH) protein to variation in carcass traits was studied. The data included 109 Polish Friesian bulls slaughtered at 15 months of age. The traits measured were carcass gain, weights of meat, bones, intermuscular and subcutaneous fat in the carcass and meat, bones and fat in valuable cuts (fore and best ribs, sirloin, round of beef and shoulder). The bulls’ GH genotype was determined using the PCR-RFLP technique. The frequencies of leucine (Leu) and valine (Val) alleles were 0·64 and 0·36, respectively. The GH concentration was determined in serial blood plasma samples collected every 15 min starting from 15 min before to 135 min after intravenous administration of 0·15 µg thyrotropin releasing hormone (TRH) per kg live weight. Response GH variables were: baseline (the mean of samples collected at –15 and 0 min), peak (the sample taken at 15 min post injection of TRH) and disappearance rate (calculated as peak minus the sample at 60 min, divided by time interval 45 min). Mixed animal models were used for the statistical analysis. Differences were found between the Leu/Leu and the Val/Val genotypes for carcass gain and weight of meat in the carcass (P ≤ 0·05). Moreover, differences in the size of the GH peak between the two homozygotes approached significance (P ≤ 0·10). The effect of GH genotype accounted for a moderate part of the phenotypic variance in the carcass traits, corresponding to a reduction in the residual variance of ≤ 5·25% when included in the model, whereas the corresponding value for the effect of GH genotype on the variation in GH release was lower, ≤ 1·77%. In conclusion, the Leu/Val polymorphism seems to be associated with carcass traits in dairy bulls, although the effect was relatively small when compared with the effects of season and background genome.
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Sugita H, Ardiyanti A, Yokota S, Yonekura S, Hirayama T, Shoji N, Yamauchi E, Suzuki K, Katoh K, Roh SG. Effect of single nucleotide polymorphisms in GH gene promoter region on carcass traits and intramuscular fatty acid compositions in Japanese Black cattle. Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.04.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Tachi N, Tanaka S, Ardiyanti A, Katoh K, Sato S. Bovine growth hormone gene polymorphism affects stress response in
J
apanese
B
lack cattle. Anim Sci J 2014; 85:722-8. [DOI: 10.1111/asj.12212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 12/13/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Noriko Tachi
- Graduate School of Agricultural ScienceTohoku University Osaki Japan
| | - Sigefumi Tanaka
- Graduate School of Agricultural ScienceTohoku University Osaki Japan
| | - Astrid Ardiyanti
- Graduate School of Agricultural ScienceTohoku University Osaki Japan
| | - Kazuo Katoh
- Graduate School of Agricultural ScienceTohoku University Osaki Japan
| | - Shusuke Sato
- Graduate School of Agricultural ScienceTohoku University Osaki Japan
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Genetic polymorphisms and protein structures in growth hormone, growth hormone receptor, ghrelin, insulin-like growth factor 1 and leptin in Mehraban sheep. Gene 2013; 527:397-404. [PMID: 23747407 DOI: 10.1016/j.gene.2013.05.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/27/2013] [Indexed: 11/24/2022]
Abstract
The somatotropic axis, the control system for growth hormone (GH) secretion and its endogenous factors involved in the regulation of metabolism and energy partitioning, has promising potentials for producing economically valuable traits in farm animals. Here we investigated single nucleotide polymorphisms (SNPs) of the genes of factors involved in the somatotropic axis for growth hormone (GH1), growth hormone receptor (GHR), ghrelin (GHRL), insulin-like growth factor 1 (IGF-I) and leptin (LEP), using polymerase chain reaction-single-strand conformation polymorphism (PCR-SSCP) and DNA sequencing methods in 452 individual Mehraban sheep. A nonradioactive method to allow SSCP detection was used for genomic DNA and PCR amplification of six fragments: exons 4 and 5 of GH1; exon 10 of GH receptor (GHR); exon 1 of ghrelin (GHRL); exon 1 of insulin-like growth factor-I (IGF-I), and exon 3 of leptin (LEP). Polymorphisms were detected in five of the six PCR products. Two electrophoretic patterns were detected for GH1 exon 4. Five conformational patterns were detected for GH1 exon 5 and LEP exon 3, and three for IGF-I exon 1. Only GHR and GHRL were monomorphic. Changes in protein structures due to variable SNPs were also analyzed. The results suggest that Mehraban sheep, a major breed that is important for the animal industry in Middle East countries, has high genetic variability, opening interesting prospects for future selection programs and preservation strategies.
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Guo X, Liu X, Xu X, Wu M, Zhang X, Li Q, Liu W, Zhang Y, Wang Y, Yu Y. The expression levels of DNMT3a/3b and their relationship with meat quality in beef cattle. Mol Biol Rep 2012; 39:5473-9. [PMID: 22193622 DOI: 10.1007/s11033-011-1349-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 12/09/2011] [Indexed: 12/29/2022]
Abstract
To identify the effects of the expression levels of DNMT3a and DNMT3b, coding the de novo methyltransferases DNMT3a and DNMT3b, on 16 beef carcass and quality traits, 50 beef cattle liver and ribeye muscle tissue samples were collected. Quantitative real-time RT-PCR was employed to quantify the expression level of these two genes, and a basic model included fixed effects of gender, age, and expression level of these two genes was used to analyze live weight; and slaughtering batches and aging days were added when beef carcass traits and beef quality traits were analyzed, respectively. Results showed that transcripts of DNMT3a and DNMT3b were present at significantly higher levels in liver tissue than in muscle tissue, and the expression level of DNMT3a was significantly higher than that of DNMT3b in both tissues. Regression analysis found that the expression levels of DNMT3a and DNMT3b were associated with several beef quality traits, which are important in beef breeding. Findings of the present study suggested that these two genes could significantly contribute to the improvement of beef quality genetically.
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Affiliation(s)
- Xiangyu Guo
- Key Laboratory of Agricultural Animal and Breeding, China Agricultural University, No. 2 Yuanmingyuan West Rd., Beijing, 100193, People's Republic of China
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12
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ÖZDEMIR MEMIS. Determination of allele frequencies of growth hormone AluI polymorphism in Brown Swiss, Holstein, native East Anatolian Red and Turkish Grey breeds. INT J DAIRY TECHNOL 2011. [DOI: 10.1111/j.1471-0307.2011.00685.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nielsen VH, Larsen NJ, Agergaard N. Association of DNA polymorphism in the growth-hormone gene with basal-plasma growth-hormone concentration and production traits in pigs. J Anim Breed Genet 2011. [DOI: 10.1111/j.1439-0388.1995.tb00559.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Mitra A, Schlee P, Balakrishnan CR, Pirchner F. Polymorphisms at growth-hormone and prolactin loci in Indian cattle and buffalo. J Anim Breed Genet 2011. [DOI: 10.1111/j.1439-0388.1995.tb00543.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Sabour MP, Lin CY, Smith C. Association of genetic variants of bovine growth hormone with milk production traits in Holstein cattle. J Anim Breed Genet 2011; 114:435-42. [DOI: 10.1111/j.1439-0388.1997.tb00529.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Ishida T, Umebayashi A, Tsuruta S, Akashi R, Harada H. Polymorphisms in growth hormone gene and their associations with calf weight in Japanese Black cattle. Anim Sci J 2010; 81:623-9. [PMID: 21108680 DOI: 10.1111/j.1740-0929.2010.00783.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The objectives of this study were to detect effective genetic polymorphisms of bovine growth hormone (bGH) gene associated with calf weight in Japanese Black cattle. Fifty-eight sires and 47 breeding cows were used to detect the polymorphisms in exons by single-strand conformation polymorphism (SSCP). Four homozygous and six heterozygous SSCP genotypes were identified in exon 5. Although each single nucleotide polymorphism (SNP) had been reported, these genotypes were caused by three SNPs at the nucleotide positions 2141, 2277 and 2291. Four haplotypes C-C-A, G-C-A, C-C-C and G-T-A were newly identified. It was suggested that other haplotypes not detected in this study may not exist, considering the allele frequencies reported in Bos taurus and Bos indicus, and the migrating process of native Japanese cattle. Thereafter, we examined associations between the detected polymorphic sites in exon 5 by PCR - restriction fragment length polymorphism and calf weight using 53 breeding dams and 135 calves. The birth weights of calves with haplotype G-C-A are significantly lighter and calves' weights produced by cows with such haplotype are also lighter at 30 days old, using regression analysis. Although further research is necessary, these results may serve as a useful criterion to select breeding stocks, especially in maternal abilities.
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Dani SU, Dani MAC, Freire IL, Gouvea SP, Knackfuss FB, Lima FP, Mercadante MEZ, Monteiro E, Paggiaro SMG, Razook AG, Yehia HC. Survival of the thriftiest: restricted nurture reveals the thrifty nature of a growth gene in Bos indicus. GENETICS AND MOLECULAR RESEARCH 2010; 9:1032-44. [PMID: 20533198 DOI: 10.4238/vol9-2gmr844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Growth hormone (GH) is a part of the somatotropic axis that controls metabolism, growth, development and aging in a wide range of animals. Mutations that reduce GH signaling have been associated with extended life spans and increased longevity in ways similar to what is observed in dietary restriction (DR) models. However, the mechanism by which DR works is not well understood. Here, we show that DR works as a factor in the evolution of the genetic make-up of domestic cattle. In a series of 6864 bovines of seven Bos indicus and tropically adapted Bos taurus breeds, the frequency of a short, wild-type allele of the promoter region of the bovine GH gene, G1 allele, varied from 2.7 to 17.7%. The frequency of the long, domestic G2 allele increased from 88 to 95% along 20 calf crops of commercial Bos indicus cattle of the Nelore breed undergoing selection for increasing post-weaning weight gain with ad libitum nutrient intake. Under DR, however, the G1 allele sustained growth better than the G2 allele, as observed in a series of feeding tests. The G2 allele was even detrimental or abiotropic, as it caused rapid body decay under DR. We observed a reflection symmetry of GH allele substitution effects on body weight under different dietary schemes. The G2 allele is featured as the "demanding allele", because it is optimally fitted to ad libitum nutrient intake. The G1 allele is featured as the "thrifty allele" because it is optimally fitted to DR. Our results show that dietary regimens need not extend lifespan or increase longevity in the sense of age-specific fitness. Instead, adaptation to any particular dietary regimen is just as much a consequence of selection as its cause; dietary regimens work as do any selection force, optimizing genotypic fitness to nutritional conditions.
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Affiliation(s)
- S U Dani
- Excegen Genética S.A., Acangau Valley, Paracatu, MG, Brasil.
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18
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Han SH, Cho IC, Ko MS, Jeong HY, Oh HS, Lee SS. Effects of POU1F1 and GH1 genotypes on carcass traits in Hanwoo cattle. Genes Genomics 2010. [DOI: 10.1007/s13258-009-0708-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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AluI polymorphism of the bovine growth hormone (GH) gene, resumption of ovarian cyclicity, milk production and loss of body condition at the onset of lactation in dairy cows. Theriogenology 2009; 71:553-9. [DOI: 10.1016/j.theriogenology.2008.06.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2006] [Revised: 04/14/2008] [Accepted: 06/07/2008] [Indexed: 11/22/2022]
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20
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Murphy AM, Meade KG, Hayes PA, Park SDE, Evans ACO, Lonergan P, MacHugh DE. Transmission ratio distortion at the growth hormone gene (GH1) in bovine preimplantation embryos: An in vitro culture-induced phenomenon? Mol Reprod Dev 2008; 75:715-22. [PMID: 17948248 DOI: 10.1002/mrd.20813] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The growth hormone gene (GH1) and its polypeptide product (GH) have a crucial role in reproduction, embryogenesis and general development. A polymorphism present in the fifth exon of the bovine GH1 gene (GH1 p.Leu127Val) has been associated with GH release and milk production in cattle. The objective of the present study was to examine the genotype frequencies of the GH1 p.Leu127Val polymorphism in bovine blastocysts produced in vitro and in vivo to determine if allelic variation of the GH1 gene affects embryo development and survival. A heterozygous (p.Leu127/Val127) sire was used for in vitro fertilization of oocytes of unknown maternal genotype (n = 104) and known maternal genotype (n = 115). PCR amplification and genotyping of the GH1 gene from Day 8 blastocysts derived from these fertilized oocytes demonstrated that there was significant over-representation from the expected Mendelian ratio of GH1 p.Leu127/Leu127 homozygotes from oocytes of known maternal genotype (P = 0.006). Contrary to this, analysis of in vivo-produced bovine blastocysts of known parental GH1 genotype (n = 69) did not reveal an overrepresentation of GH1 p.Leu127/Leu127 homozygotes. These results suggest that developing in vitro-produced embryos are exposed to a selection process, probably due to a less favorable culture environment, that acts to increase the number of GH1 p.Leu127/Leu127 homozygotes, thereby giving rise to the observed transmission ratio distortion (TRD) of GH1 genotypes when compared to in vivo produced embryos.
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Affiliation(s)
- Angela M Murphy
- Animal Genomics Laboratory and Conway Institute for Biomolecular and Biomedical Research, School of Agriculture, Food Science and Veterinary Medicine, College of Life Sciences, University College Dublin, Belfield, Dublin 4, Ireland
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21
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Tatsuda K, Oka A, Iwamoto E, Kuroda Y, Takeshita H, Kataoka H, Kouno S. Relationship of the bovine growth hormone gene to carcass traits in Japanese black cattle. J Anim Breed Genet 2008; 125:45-9. [PMID: 18254825 DOI: 10.1111/j.1439-0388.2007.00688.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The bovine growth hormone gene (bGH) possesses three haplotypes, A, B and C, that differ by amino acid mutations at positions 127 and 172 in the fifth exon: (leucine 127, threonine 172), (valine 127, threonine 172) and (valine 127, methionine 172) respectively. The correlation between meat quality or carcass weight and these haplotypes was investigated in Japanese black cattle. Altogether, 940 bGH haplotypes were compared with respect to six carcass traits: carcass weight, longissimus muscle area, rib thickness, subcutaneous fat thickness, beef marbling score and beef colour. The frequency of the B haplotype was higher (0.421) than that of A (0.269) and C (0.311). High carcass weight and low beef marbling were associated with haplotype A (p < 0.05 and p < 0.01 respectively), whereas beef marbling was increased by haplotype C (p < 0.05). Estimated regression coefficient of the A haplotype substitution effect for carcass weight and beef marbling score were 5.55 (13.1% of the phenotypic SD) and -0.31 (17.0%) respectively. That of the C haplotype for beef marbling score was 0.20 (11.0%). The other traits showed no relationship to the haplotypes examined. The results of this investigation suggest that information pertaining to bGH polymorphisms in Japanese black cattle could be used to improve the selection of meat traits.
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Affiliation(s)
- K Tatsuda
- Hyogo Prefectural Institute of Agriculture, Forestry and Fisheries, Kasai, Japan.
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22
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OKA A, IWAKI F, IWAMOTO E, TATSUDA K. Effects of growth rate during the early fattening period on growth, carcass characteristics and circulating hormones in the different growth hormone genotypes of Japanese black steers. Anim Sci J 2007. [DOI: 10.1111/j.1740-0929.2007.00418.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Recent advances in cattle functional genomics and their application to beef quality. Animal 2007; 1:159-73. [DOI: 10.1017/s1751731107658042] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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24
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Barendse W, Bunch RJ, Kijas JW, Thomas MB. The effect of genetic variation of the retinoic acid receptor-related orphan receptor C gene on fatness in cattle. Genetics 2006; 175:843-53. [PMID: 17151246 PMCID: PMC1800623 DOI: 10.1534/genetics.106.064535] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Genotypes at the retinoic acid receptor-related orphan receptor C (RORC) gene were associated with fatness in 1750 cattle. Ten SNPs were genotyped in RORC and the adjacent gene leucine-rich repeat neuronal 6D (LRRN6D) to map the QTL, 7 of which are in a 4.2-kb sequence around the ligand-binding domain of the RORC gene. Of the 29 inferred haplotypes for these SNPs, 2 have a combined frequency of 54.6% while the top 5 haplotypes have a combined frequency of 85.3%. The average D' value of linkage disequilibrium was 0.92 although the average r2 was a low 0.18. The RORC:g.3290T>G SNP had the strongest association with marbling. The inferred haplotypes were significantly associated with marbling and the difference between the most divergent haplotypes was 0.35 sigma(p) of marbling and 0.28 sigma(p) of rump fat, explaining the previously reported QTL effect. cDNA for RORC were sequenced and 2 new alternative transcripts were found. Fetal tissue shows 40 times greater transcription of RORC than adult tissue. The highest expression in fetal tissue was found in liver and kidney, but in adults the longissimus muscle had the greatest expression of the tissues tested.
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Affiliation(s)
- W Barendse
- CSIRO Livestock Industries, Queensland Bioscience Precinct, Saint Lucia, Queensland 4067, Australia.
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25
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Barendse W, Bunch RJ, Harrison BE, Thomas MB. The growth hormone 1 GH1:c.457C>G mutation is associated with intramuscular and rump fat distribution in a large sample of Australian feedlot cattle. Anim Genet 2006; 37:211-4. [PMID: 16734678 DOI: 10.1111/j.1365-2052.2006.01432.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The GH1:c.457C>G exon 5 missense mutation in the bovine growth hormone 1 (GH1) gene that causes the replacement of leucine (L) with valine (V) was investigated in 1027 cattle with primarily Angus and Shorthorn breeding from Australian feedlots. The allele frequency of the GH1:c.457C allele was 0.77 in Angus and 0.76 in Shorthorn. The GH1:c.457C allele was associated with lower marbling (P = 0.0472), and the average effect of allele substitution was -0.22 of a phenotypic standard deviation. This allele was also associated with slightly higher rump fat (P = 0.0541) and the average effect of allele substitution was 0.11 SD. Marbling and rump fat were not strongly correlated (r = 0.097, P < 0.01) in this data set. This mutation had no significant effect on eye muscle area or hot dressed carcass weight (P > 0.1). Given these relationships, the differences between GH1 alleles could be the result of differential deposition of fat in fat depots.
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Affiliation(s)
- W Barendse
- CSIRO Livestock Industries, Queensland Bioscience Precinct, St Lucia 4067, Australia.
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26
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Curi RA, Palmieri DA, Suguisawa L, Oliveira HND, Silveira AC, Lopes CR. Growth and carcass traits associated with GH1/Alu I and POU1F1/Hinf I gene polymorphisms in Zebu and crossbred beef cattle. Genet Mol Biol 2006. [DOI: 10.1590/s1415-47572006000100012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Rogério A. Curi
- Universidade Estadual Paulista Júlio de Mesquita Filho, Brasil
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27
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Biswas TK, Bhattacharya TK, Narayan AD, Badola S, Kumar P, Kumar S, Sharma A. Effect of Growth Hormone Gene Polymorphism on Milk Quality Traits in Crossbred Cattle. JOURNAL OF APPLIED ANIMAL RESEARCH 2003. [DOI: 10.1080/09712119.2003.9706449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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28
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Di Stasio L, Brugiapaglia A, Destefanis G, Albera A, Sartore S. GH1 as candidate gene for variability of meat production traits in Piemontese cattle. J Anim Breed Genet 2003. [DOI: 10.1046/j.1439-0388.2003.00406.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Joudrey EM, Lechniak D, Petrik J, King WA. Expression of growth hormone and its transcription factor, Pit-1, in early bovine development. Mol Reprod Dev 2003; 64:275-83. [PMID: 12548660 DOI: 10.1002/mrd.10237] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
During bovine embryogenesis, bovine growth hormone (bGH) contributes to proliferation, differentiation, and modulation of embryo metabolism. Pituitary-specific transcription factor-1 (Pit-1) is a transcription factor that binds to promoters of GH, prolactin (PRL), and thyroid-stimulating hormone-beta (TSHbeta) encoding genes. A polymorphism in the fifth exon of the bGH gene resulting in a leucine (Leu) to valine (Val) substitution provides an Alu I restriction site when the Leu allele is present. To determine the onset of embryonic expression of the bGH gene, oocytes derived from ovaries homozygous for Leu alleles were fertilized in vitro with spermatozoa obtained from a Val homozygote. For each developmental stage examined, three separate pools of embryos composed of approximately 100 cell samples underwent RNA isolation, reverse transcription to cDNA, and amplification by nested PCR (nPCR). Bovine GH gene transcripts were identified at 2- to 4-cell (n = 162), 8- to 16-cell (n = 73), morulae (n = 51), and blastocyst (n = 15) stages. Likewise, transcripts for Pit-1 were detected at 2-cell (n = 125), 4-cell (n = 114), 8-cell (n = 56), 12-to-32-cell (n = 32), morulae (n = 68), and blastocyst (n = 14) stages. After digestion with Alu1, bGH cDNA was genotyped by restriction fragment length polymorphism (RFLP) analysis. Bovine GH mRNA was present in all pools of stages examined. Both Leu and Val alleles (maternal and paternal) were only detected in pools of embryos that had reached 8- to 16-cell stage. Results suggest that transcription of the bGH gene begins at the 8- to 16-cell stage in bovine embryos, possibly under control of the transcription factor, Pit-1, and that RFLP analysis of the bGH gene can be used to determine parental origin of transcripts in early embryonic development.
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Affiliation(s)
- E M Joudrey
- Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
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30
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Tambasco DD, Paz CCP, Tambasco-Studart M, Pereira AP, Alencar MM, Freitas AR, Coutinho LL, Packer IU, Regitano LCA. Candidate genes for growth traits in beef cattle crosses Bos taurus x Bos indicus. J Anim Breed Genet 2003. [DOI: 10.1046/j.1439-0388.2003.00371.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Vasconcellos LPDMK, Tambasco-Talhari D, Pereira AP, Coutinho LL, Regitano LCDA. Genetic characterization of Aberdeen Angus cattle using molecular markers. Genet Mol Biol 2003. [DOI: 10.1590/s1415-47572003000200005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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32
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Di Stasio L, Sartore S, Albera A. Lack of association of GH1 and POU1F1 gene variants with meat production traits in Piemontese cattle. Anim Genet 2002; 33:61-4. [PMID: 11849139 DOI: 10.1046/j.1365-2052.2002.00811.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Growth hormone (GH) and the Pit-1 transcription factor have been shown to be involved in the physiological mechanisms related to growth. The present study was carried out to investigate the possible association of the polymorphism at GH1 and POU1F1 loci with meat production traits in Piemontese cattle. Fourteen traits were considered, expressing growth (weight at 5, 7 and 11 months, daily gain), size [withers height (WH), trunk length (TL), chest girth (CG) at 12 months] and meat conformation [withers width (WW), shoulder muscularity (SM), loin width (LW), loin thickness (LT), thigh muscularity (TM), thigh profile (TP), bone thinness (BT)]. Data were analysed with a mixed model procedure to estimate the allele substitution and the dominance effects. The results did not provide evidence of association of GH1 and POU1F1 polymorphisms with the evaluated traits.
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Affiliation(s)
- L Di Stasio
- Dipartimento di Scienze Zootecniche, Facoltà di Agraria, 10095 Grugliasco, Italy.
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33
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Chrenek P, Boulanger L, Heyman Y, Uhrin P, Laurincik J, Bulla J, Renard JP. Sexing and multiple genotype analysis from a single cell of bovine embryo. Theriogenology 2001; 55:1071-81. [PMID: 11322235 DOI: 10.1016/s0093-691x(01)00467-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We described a procedure for multiple genotype analysis (determination of sex and of three genetic markers) from a single cell derived from bovine preimplantation embryo. It consists of primer extension preamplification-polymerase chain reaction (PEP-PCR) and subsequent single assay or multiplex PCR. A single blastomere that was isolated by microaspiration from bovine embryos at the 16- to 32-cell stage then was lysed and was subjected to the PEP-PCR. When testing 75 embryos, efficiency of genotyping by standard PCR for kappa-casein, growth hormone (GH) and prolactin (PRL) polymorphic alleles was 91, 88 and 89%, respectively. Sexing efficiency in the multiplex PCR was 91%, based on the amplification of Y-specific locus using kappa-casein internal standard. The microaspiration of a single blastomere was shown not to be invasive for the embryos. It did not alter their development potential in vitro (P > 0.05), as was seen by obtaining a similar percentage of embryos developing further into the blastocyst stage in the group subjected to biopsy (44/75, 59%) and in the control group of embryos (30/50, 60%).
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Affiliation(s)
- P Chrenek
- INRA, Biology of Development, Jouy-en-Josas, France.
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34
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Kemenes PA, Regitano LCDA, Rosa AJDM, Packer IU, Razook AG, Figueiredo LAD, Silva NA, Etchegaray MAL, Coutinho LL. k-Casein, b-lactoglobulin and growth hormone allele frequencies and genetic distances in Nelore, Gyr, Guzerá, Caracu, Charolais, Canchim and Santa Gertrudis cattle. Genet Mol Biol 1999. [DOI: 10.1590/s1415-47571999000400012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The genotypes for k-casein (<FONT FACE="Symbol">k</FONT>-CN), <FONT FACE="Symbol">b</FONT>-lactoglobulin (<FONT FACE="Symbol">b</FONT>-LG) and growth hormone (GH) were determined by polymerase chain reaction (PCR) and restriction enzyme digestion in seven breeds of cattle (Nelore, Gyr, Guzerá, Caracu, Charolais, Canchim and Santa Gertrudis). <FONT FACE="Symbol">k</FONT>-Casein had two alleles with the A allele occurring at a higher frequency in Bos indicus breeds (0.93, 0.92 and 0.91% for Gyr, Guzerá and Nelore, respectively). The <FONT FACE="Symbol">b</FONT>-lactoglobulin locus had two alleles in all of the breeds. European breeds had a higher frequency of the <FONT FACE="Symbol">b</FONT>-LG A allele than Zebu breeds. The GH locus had two alleles (L and V) in Bos taurus and was monomorphic (L allele only) in all of the Bos indicus breeds evaluated. The highest frequency for the V allele was observed in Charolais cattle. The markers used revealed a considerable similarity among breeds, with two main groups being discernible. One group consisted of Zebu and Santa Gertrudis breeds and the other consisted of European and Canchim breeds.
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35
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Parmentier I, Portetelle D, Gengler N, Prandi A, Bertozzi C, Vleurick L, Gilson R, Renaville R. Candidate gene markers associated with somatotropic axis and milk selection. Domest Anim Endocrinol 1999; 17:139-48. [PMID: 10527117 DOI: 10.1016/s0739-7240(99)00031-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
One of the obstacles to progress in dairy cattle selection is that milk production traits are only expressed after the first calving. However, the use of the quantitative trait loci (QTL) technology will improve the efficiency of dairy industry with a positive image for the consumers. QTL are part of the genome showing a preponderant action and explaining the major part of variation of the trait production. At the present time, the two major strategies developed to detect such QTL are the candidate gene approach and the positional genetics approach. The somatotropic axis contains the most promising candidates in this respect, as it strongly regulates milk production. Then, the identification of favorable QTL associated with the somatotropic axis that are significantly correlated with genetic merits for milk production could lead to more effective selection programs.
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Affiliation(s)
- I Parmentier
- Biology and Biochemistry Applied Department, Gembloux Agricultural University, Belgium
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36
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Vukasinovic N, Denise SK, Freeman AE. Association of growth hormone loci with milk yield traits in Holstein bulls. J Dairy Sci 1999; 82:788-94. [PMID: 10212466 DOI: 10.3168/jds.s0022-0302(99)75297-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A pedigree analysis was used to investigate the association of bovine growth hormone loci with milk production traits of Holstein cattle. Holstein bulls were typed for three bovine growth hormone loci located in exon V, intron C, and the 3' region of the gene. Phenotypic data were daughter yield deviations for milk, fat, and protein yields and for fat and protein percentages. Analysis of linkage across families was applied to the data using one or two bovine growth hormone loci as markers linked to a putative biallelic quantitative trait locus. Estimated parameters were allele frequency, genotypic means, within-genotype standard deviation of a putative quantitative trait locus, and recombination fraction between the markers and the quantitative trait locus. Parameters were estimated by maximum likelihood techniques. The estimated frequency of the quantitative trait locus allele that decreased the value of the phenotype ranged from 0.1 for milk yield to 0.6 for protein yield. The estimated effect of an allele substitution at the quantitative trait locus, given in phenotypic standard deviation units, ranged from 0.75 for fat percentage to 1.6 for milk yield. The standard deviation within genotype ranged from 0.67 for fat yield to 0.87 for milk yield. The estimated recombination fraction was close to zero for protein percentage, indicating physical linkage between a quantitative trait locus affecting the trait and the bovine growth hormone loci.
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Affiliation(s)
- N Vukasinovic
- Animal Breeding Group, Swiss Federal Institute of Technology, Zurich, Switzerland
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37
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Falaki M, Gengler N, Sneyers M, Prandi A, Massart S, Formigoni A, Burny A, Portetelle D, Renaville R. Relationships of polymorphisms for growth hormone and growth hormone receptor genes with milk production traits for Italian Holstein-Friesian bulls. J Dairy Sci 1996; 79:1446-53. [PMID: 8880469 DOI: 10.3168/jds.s0022-0302(96)76503-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Allelic variation in the structural or regulatory sequences of growth hormone and its receptor genes might directly or indirectly affect milk traits. This possibility prompted us to investigate the eventual relationships of restriction fragment length polymorphisms at the locus of bovine growth hormone (using TagI and MspI restriction enzymes) and its receptor (using TaqI restriction enzyme) to PTA of milk production traits of bulls. Ninety-one Italian Holstein-Friesian bulls were used in this experiment, and data were analyzed with a fixed linear model. The restriction fragment length polymorphisms at the growth hormone locus did not affect the milk traits studied. Six restriction enzyme TaqI bands of 7.1, 6.2, 5.7, 5.4, 4.2, and 3.3 kb with nine patterns were observed after hybridization by a cDNA probe containing the coding sequences for the intracellular C-terminal part of the receptor. The effect of this polymorphism on PTA for milk protein percentage was highly significant and was favorable for the rare (6.6%) 5.7- and 5.4-kb pattern. Our results indicate that further study is needed to explain the DNA polymorphism and to obtain more definite conclusions about effects on milk traits.
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Affiliation(s)
- M Falaki
- Department of Molecular Biology and Animal Physiology. Faculty of Agronomy, Gembloux, Belgium
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