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Association of bGH and Pit-1 gene variants with milk production traits in dairy Gyr bulls PAB
Mattos,Keiko Kusamura de; Del Lama,Silvia Nassif; Martinez,Mario Luiz; Freitas,Ary Ferreira.
The objective of this study was to obtain genetic marker information in the Gyr breed by analyzing bGH and Pit-1 gene polymorphisms and to verify their association with milk production traits. One sample including 40 Gyr bulls were genotyped at two bGH gene restriction sites (bGH- AluI and bGH-MspI) and at one restriction site in the Pit-1 gene (Pit-1 HinfI). The bGH-MspI(-) allele was favorable for fat milk percentage. The heterozigous Pit-1 HinfI (+/-) bulls were superior for fat milk production, in relation to homozigous Pit-1 HinfI (+/+). The Pit-1 and bGH genes are strong candidates in the dairy cattle QTL search, and zebuine populations are promising samples for this purpose.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dairy cattle; Genetic markers; Polymorphism; Zebu.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000200007
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