Single nucleotide polymorphism C994g of the cytochrome P450 gene possess pleiotropic effects in <i>Bos taurus</i>, L.

The chronic consumption of mycotoxin-contaminated forage tends to the weight loss young cattle, decreasing reproductive success adult animals, milk yield, and tolerance high temperatures. aim this paper was study eff ects SNP C994G in CYP3A28 gene on productive characteristics dairy beef breeds. Cows were measured by body dynamics, exterior, reproduction, production traits, bone mineral density, bulls analyzed estimating their progeny traits. Dairy cows received dietary betaine supplement with measurement homocysteine levels. Molecular genetic performed PCR-RFLP method. effects shown relation udder size, constitution birth Abredin-Angus cows, as well fat protein content Ukrainian Red-and-White milk. higher sensitivity GG genotype less level after addition shown. Given identifi ed correspondence, pleiotropic can be concluded. A microscopic analysis supported findings greater efficiency CC under conditions low mycotoxins contamination, which is selective.