An association between the G/A single nucleotide polymorphism within intron II of VIP gene and milk performance traits in dairy cattle: short communication

• Autores: Marek W. Kmiec, Wioleta Grzelak, Anna M. Majewska
• Localización: Spanish journal of agricultural research, ISSN-e 2171-9292, ISSN 1695-971X, Vol. 12, Nº. 3, 2014, págs. 672-675
• Idioma: inglés
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• Resumen

  • Single nucleotide polymorphisms (SNPs), which are present in the encoding part of the genes responsible for important breeding functions, exert an influence on the cattle�s phenotype since their function is to regulate the genes expression. In this study a G/A single nucleotide polymorphism within intron II of the vasoactive intestinal peptide (VIP) gene was detected. The study covered a herd of 185 Jersey dairy cows from the Wielkopolska Province in Poland.

    All possible VIP/DraI genotypes determined by using two alleles (AA, AG, GG) were examined in the herd of cows under study. The AA genotype frequency was 0.48; AG 0.22, and GG 0.30. Allele A frequency was 0.592, whereas allele G was 0.408. Analyzed VIP/DraI gene polymorphism with respect to milk utility traits showed slight statistical differences in the percentage of fat and protein content in milk of the animals with different VIP/DraI genotypes. This study could have a significant influence on dairy cattle breeding programs in the future as improvements in genetic selection methods will continue to be important in milking management