Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 2
Written by Тatiana LUPOLOV, Оleg МАSHNЕR, Elena GUMINSKAYA, Igor PETCU, Valentina PETCU
This article provides data on candidate genes CS3, CS2, BLG, LALBA as molecular markers for predicting milk productivity, technological properties of milk in cattle of Red Estonian, black-mottled Belarusian and Moldovan breeds, Karakul sheep breed, and also, OV, TFR loci in chickens of various breeds. The marker selection makes it possible to identify animals with valuable genes and preserve them in the population, as well as to look for a relationship with economically useful traits. The disadvantage of this method today is the high cost of research. Analyzing the relationship of candidate genes with productive qualities, it can be seen that the genotypes beneficial for one breed are not those for another breed. This is due to the degree of absorption of the breed - founder/bull in crosses and breeding 'in itself', etc. Nevertheless, in our opinion, valuable kappa-casein alleles are introduced by individuals of the Holstein and Simmental breeds, which are of the greatest value for breeding.
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