Portal de Periódicos da CAPES

FROM THE HISTORY OF YAK-CATTLE HYBRIDISATION IN THE HIGHLANDS OF OIROTIA

2022; Issue: 2 Linguagem: Inglês

10.31677/2311-0651-2022-36-2-36-44

2311-0651

A. I. Bakhtushkina,

Food Industry and Aquatic Biology

The article notes the main results of the research work of the Oirot zonal experimental station (now Gorno-Altaisk Research Institute of Agriculture) on the improvement of local cattle based on hybridization with yak. The author presented the main conclusions of the results of the hybridization of yak with cattle: hybrids of the first generation possess heterosis in live weight, meat content, milk fat, which is significantly higher than in the original animals; yak hybrids sufficiently retain the high ability to pasture during the winter, foraging from under the snow. Shorthorn hybrid animals had higher growth vigor in all rearing periods compared to Siberian Simmental hybrids and purebred yaks. The live weight of the hybrid animals averaged 140 kg compared to 68.3 kg for yaks of the same age, indicating that the smallness of the yak could be eliminated. The increased hemoglobin in the blood of the hybrid animals indicated a more intensive metabolism, and more vigorous growth of the organism, which serves as one of the indicators of the high qualities of endurance and adaptability of hybrids.