Authors:
U. V. KHOMPODOEVA, candidate of agricultural sciences, senior researcher, laboratory of productive horse breeding technology,
R. V. IVANOV, doctor of agricultural sciences, deputy director for science, head of the laboratory of productive horse breeding technology,
V. A. BAGIROV, doctor of bilogical sciences, corresponding member of the Russian Academy of Sciences, director of the Department of Coordination of Activity of Organizations in the Field of Agricultural Sciences,
Yakut Scientific Research Institute of Agriculture named after M. G. Safronov (23/1 Bestuzheva-Marlinskogo Str., phone 8 (4112) 21-45-74, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.),
Ministry of Acience and Higher Education of the Russian Federation (14, building 3 Solyanka Str., 109992, Moscow, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.).
Abstract. The article presents the results of studies on the dynamics of live weight, exterior measurements and body composition indices in purebred Simmental and crossbred animals. It is established that the hybrids obtained as a result of crossing of cows of Simmental breed with forest bison in all age periods surpassed the Simmental analogs on live weight and intensity of growth. The dynamics of the exterior of the measurements had no statistically significant intergroup differences, except in the indices of massiveness and bytosti from the crossbred calves in 5 and 18 months of age, the superiority in 5месячном the age was on the index of bytosti – of 8,85 % (P ≥ 0,99), the index of massiveness and 5,5 % (P ≥ 0,95). In 18 months – 8,3–8,9 % and 6,7–8,2 %, respectively (p ≥ 0,95). The study of the relationship of live weight with the main linear measurements revealed a positive, straightforward, sufficiently high correlation. Thus, the correlation coefficient between live weight at 24 months and height at withers at 9 months of age was 0,909 in bulls, 0,998 in heifers, 0,937 and 0,966 respectively in Simmental-bison. At the same time, for Simmental bison significantly high correlation coefficients were found between live weight and chest girth: in bulls – 0,949, in heifers – 0,909 (p ≥ 0,99), chest depth 0,816 and 0,676, as well as oblique body length – 0,885 and 0,951, respectively (P ≥ 0,99). In General, the material obtained as, a result of mathematical processing indicates the possibility of predicting the meat productivity of experimental animals on the main exterior measurements.
Keywords: exterior, constitution, measurements, body indices, hybridization, genetic potential.
Download the full text of the article.
