Аннотация
The article presents the results of a comparative assessment of the growth, development and meat productivity of young animals of the Volgograd fine-fleece breed and crosses obtained as a result of introductory crossing of Volgograd fine-fleece ewes with rams of the Akzhaik meat-wool breed of the Saltanat peasant farm. Differences between groups in live weight are explained by the breed characteristics of the paternal forms of animals and the manifestation of heterosis. Thus, rams from Akzhaik breeders were superior in live weight to rams from Vogograd breeders at birth by 9.1% (P<0.05), at cutting by 2.1% and at 8 months by 5.2% (P<0 .05). The eggs, respectively, were superior at birth by 0.4 kg or 9.8% (P<0.05), at 8 months by 1.6 kg or 5.8% (P<0.01). Data from body measurements and the values of body composition indices, which characterize the severity of meatiness, show the advantage of young animals from sires of the Akzhaik breed over the offspring of sires of the Volgograd breed. To study meat productivity, control slaughters of lambs at the age of 4 and 8 months were carried out. At the same time, in terms of slaughter weight, the offspring of Akzhaik rams was superior by 1.27 kg or 5,8%. When slaughtered at the age of 4 months, fairly good carcasses weighing 13.45 kg or more were obtained from all crossing options, and after fattening the carcass weighing 21.97 kg with the advantage of offspring from Akzhaik sheep.