ОПЫТ ИСПОЛЬЗОВАНИЯ ПОЛУТОНКОРУННЫХ ОВЕЦ ЗАРУБЕЖНОЙ СЕЛЕКЦИИ

Abstract

This article presents the results of research work on the use of gene pool of foreign breeding sheep on ewes of the Kazakh mutton-semi-fine wool sheep breed for 2015-2017, performed within the framework of the budget program 249 "Creation of conditions for animal husbandry and production, processing, sale of livestock products". In particular, using results of rams of specialized semi-fine wool Dorset and Texel breeds, characterized by high early maturity and meat qualities on Kazakh mutton-semi-fine wool ewes. Growth and development, wool productivity, meat and breeding qualities of purebred and crossbred male and female lambs of first, second and third generation of Kazakh mutton-semi-fine wool sheep breed were studied. A study of dynamics of live weight of purebred and crossed sheep of Kazakh mutton-semi-fine wool sheep breed showed live weight and exteriors of compared groups (purebred and crossed) of sheep at birth, at 4-4.5 and 12 months were not significantly different, it indicates good adaptive properties of hybrid (1/4Т×3/4KMW, 1/4D×3/4 KMW) sheep to hot climatic conditions of semi-deserts and deserts of Shu-Ili lowlands and sands of Moyunkum. According to slaughter parameters purebred and crossbred lambs differed slightly. Thus, live weight of lambs at the age of 6 months was in the range of 38.53-40.56 kg and slaughter yield was 54.23-55.96%. By the ratio of pulp and bone mass, no significant difference was observed. For total fat parameters purebred lambs exceeded crossbred sheep on 1.4-1.99%, therefore, purebred lambs distinguished by the highest calorific value of meat, i.e. on 15.6- 17.3% more than in crossbred sheep.