EVALUATION OF THE BREEDING VALUE OF HOLSTEIN BULLS OF AMERICAN BREEDING BASED ON THE BLUP METHOD IN THE CONDITIONS OF THE KOSTANAY REGION

Abstract

This article discusses the use of the BLUP method for accurate and objective calculation of the indices of the breeding value of Holstein bulls, as well as the comparison of indicators obtained by processing data on the productivity of cows in the conditions of the Kostanay region with the indicators of the daughters of American breeding. The indices of the breeding value of Holstein bulls were calculated taking into account the formed database on the productivity of their offspring in the conditions of the Kostanay region, while 11 bulls were characterized as deteriorators, and the remaining 6 as improvers. A comparison of the breeding value indices with the offspring of bulls of local and American breeding by determining the coefficient of rank correlation between the results obtained in the conditions of Northern Kazakhstan and the indices known in the USA showed that despite the high productivity indicators of their daughters, only 26.7% of them were able to show their breeding qualities both in the native conditions of North America and in the conditions of farms of Kostanay region. Such bulls include ROYOLA ALTADONNIE 511HO10522, FARNEAR-TBR ALTAAVALON-ET 011H010360 and NO-FLA ALTADANNO-ET 011HO11198. The bulls studied included R-E-W ALTA BAYSIDE 11HO08600, NO-FLA ALTADANNO-ET 011HO11198, MORNINGVIEW ALTA TOYOTA 511HO10079, FARNEAR-TBR ALTAAVALON-ET 011H010360, ROYOLA ALTADONNIE 511HO10522 and BOMAZ ALTAPHONIC-ET 511HO10997