2020
DOI: 10.3390/ani10091651
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Effect of GH p.L127V Polymorphism and Feeding Systems on Milk Production Traits and Fatty Acid Composition in Modicana Cows

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,… Show more

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Cited by 12 publications
(6 citation statements)
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“…Recently, the study of the polymorphism has been used to optimize the performance and composition of dairy cows [ 25 , 26 , 27 , 28 ]. The GWAS data in Li and his colleagues’ study suggested that a SNP in the SORBS 1 gene can significantly influence the composition of fatty acids in milk, especially MUFAs and PUFAs [ 24 ].…”
Section: Discussionmentioning
confidence: 99%
“…Recently, the study of the polymorphism has been used to optimize the performance and composition of dairy cows [ 25 , 26 , 27 , 28 ]. The GWAS data in Li and his colleagues’ study suggested that a SNP in the SORBS 1 gene can significantly influence the composition of fatty acids in milk, especially MUFAs and PUFAs [ 24 ].…”
Section: Discussionmentioning
confidence: 99%
“…Modicana cows are usually reared in extensive systems, using pasture during the grazing season and with limited or no supplementation of concentrate. Semi-intensive farming systems are also possible when animals cannot go to pasture and need higher concentrate supplementation [ 3 , 4 ]. Feeding has an important role in determining most milk quality traits such as fat content and fatty acid composition [ 5 ].…”
Section: Introductionmentioning
confidence: 99%
“…GH is considered a candidate gene associated with growth, milk and reproduction traits (Curi et al, 2006;Dario et al, 2005;Grochowska et al, 2001;Pereira et al, 2005;Sönmez et al, 2018). Researchers have identified several polymorphisms in the GH gene (Amiri et al, 2018;Bordonaro et al, 2020). The best-known polymorphisms are the missense mutation C>G in exon five that changes leucine (L) to valine (V) in position 127, which can be characterized using the AluI restriction enzyme (Hradecka et al, 2008).…”
Section: Introductionmentioning
confidence: 99%