Authors:
M. B. GUMEROV, applicant, head of the state inspection Department on breeding animal husbandry
O. V. GORELIK, doctor of agricultural sciences, professor,
D. K. NAIMANOV, doctor of agricultural sciences, professor,
A. T. BISENBAEV, candidate of agricultural sciences,
Kostanay regional territorial inspection Committee for state inspection in AIC MA RK (110000, Kazakhstan, Kostanay),
Ural State Agrarian University (42 K. Libknehta str., 620075, Ekaterinburg),
Kostanay State University named after A. Baitursynov (47 Baytursynov str., 110000, Kazakhstan, Kostanay),
Scientific-innovative center of animal husbandry and veterinary medicine (26 Akzhol str., 010000, Kazakhstan, Astana).
Abstract. In vivo evaluation of repair young animals, including calves and productivity breeding of the Kazakh white-headed breed has scientific and practical value. The aim of this work was such evaluation. Bull-calves of 3rd group – line of the Veteran – during all periods of evaluation in the growth can be attributed to the class of Elite-record. Repair bull-calves of group 1 (line Gircled) at all ages for live weight belonged to the Elite class. Heifer of 2nd group, starting from 9 months of age was estimated as class Elite-record. Adjusted live weight of repair bull-calves at the age of 210 and 365 days were the best animals of the 3rd group. According to this indicator, steers this group at the age of 210 days can be attributed to the first class, and at the age of 365 days of Elite-record. For the estimated indicators of reproductive ability of repair bull-calves of Kazakh white-headed breed of different lines superiority remains for the animals of 3rd group – line of the Veteran. They have significantly higher scrotal circumference than bulls of the 1st group of 7.1 cm and 27.0 % (P ≤ 0.01) and 1.9 cm or 6.0 % (P ≤ 0.05) than in calves of the 2nd group. For meat quality positively are also bull-calves of 3rd group. They had higher rates of eye muscle area, marbling, meat and a complex assessment of meat quality. In vivo evaluation of rearing beef breeds and productivity allows you to quickly increase the number of breeding stock.
Keywords: repair bull-calves, Kazakh white-headed breed, own productivity, estimation.
