Abstract
The article deals with the issues of productivity and reproductive ability of Kazakh fat-tailed coarse-wooled sheep. The studies were carried out on the Razakhun farm in the Zhambyl region in three herds in October-November 2022. Based on the insemination of 1935 ewes, the following results were obtained. In total, 1,494 out of 1935 inseminated queens calved on time, which averaged 77.2% with fluctuations in herds from 74.1% to 79.7%. A total of 1,662 lambs were born, or an average of 1.11 lambs per lamb. In the spring of 2022, the live weight of sires and ewes was 111.9±0.66 and 64.4±0.20 kg, fatness – 2.71±0.10 and 2.62±0.05 points, in the spring of 2023 d. – 108.8±0.63 and 58.7±0.19 points. kg and 2.44±0.12 and 2.11±0.06 points, respectively. The body weight of single rams and lambs at birth was 4.89±0.06 and 4.44±0.07 kg, and that of twin rams and lambs was 3.82±0.08 and 3.53±0.09 kg, respectively.