EVALUATION OF ABERDEEN ANGUS BREEDING BULLS BY THE QUALITY OF OFFSPRING

Abstract

The research work reflected in the article was carried out in 2022 in the breeding farm of Nur-Zhailau NS LLP, located in the Kostanay region, Arkalyk city, Matrosovo village. The purpose of the work is to evaluate the bulls-producers of the Aberdeen-Angus breed on the farm. The following Aberdeen Angus breed bulls participated in the test: AAA 17320042, AAA 18240588, AAA 17264322, AAA 16448662, AAA 18434747, AAA 18858269. 6 breeding bulls participated in the test, groups of bulls in each n = 10 heads were made up from each bull. According to the purpose of the work: the live weight, the average daily gain, the amount of feed consumed were measured and the indices of meat – offspring obtained from these bulls-producers were calculated. The received digital data underwent biometric statistical processing.

The research methodology was carried out according to the VISH, VNIIMS, testing of bulls of producers on the quality of offspring and their own productivity, and a guide for evaluating breeding cattle of the meat direction.

According to the test results, the bulls-producers AAA 17264322, AAA 16448662, AAA 18434747 received the breeding category "improver", their breeding score was respectively equal to the following complex indices 102, 100, 105. The examination of the results obtained when evaluating bulls by the quality of offspring shows the stability of breeding indicators and their use for targeted breeding work.