Control over the inherited diseases of Ayrshire and Aberdeen Angus cattle breeds on the Russian Federation territory

Abstract

In the paper have been described the inherited diseases AH1 and FMO3 charactering for Ayrshire cattle breed and AM, OS and DD, charactering for Aberdeen Angus one, particularly, the clinical signs and causing gene mutations. The aim of the study was a genotyping of Ayrshire and Aberdeen Angus breeds cattle of Russian populations by earlier developed DNA tests and the evaluation of the spread of animal carriers. The analysis of two populations of Ayrshire cows (n=268) and three populations of Aberdeen Angus (n=772) sire bulls has shown the presence of animals carriers of the genetic defect of AH1 and FMO3 among the Russian Ayrshire populations in 6.33-15.79% and 7.69-46.15% frequencies, respectively. In addition, in Subpopulation 5b three FMO-affected animals were found (3.03%). The animals carriers of AM and DD genetic defects have been found in Russian Aberdeen Angus populations in the frequencies of 0.63-2.73 and 1.13-9.49% dependently from the populations, respectively. In addition, we have observed the increasing of the frequencies of AMC- and DDC-animals in the subpopulations of descendants of populations 1 and 2. The increasing of AMC-animals in Subpopulation 2b comparing with 2a was statistically significant.