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Studies have shown that the breeding cattle of the Swiss breed of different genotypes used in the selection in Uzbekistan are characterized by high breeding value. The cows obtained from them are distinguished by high milk productivity and fat-milk content, a high milk production coefficient, indicating a pronounced milk type. Cattle of Austrian breeding are characterized by a higher productivity potential. In some cattle cows, the milk yield by 191.3–417.1 kg, the milk yield of 4% milk by 212.6–472.6 kg, the milk yield coefficient by 26.1–45.8 kg exceeds the corresponding indicators of the cows of other cattle. The calves of the cattle nick-named Karan, Koster, Emil and Jordan had milk yield at 1,174.8, 1,219.4; 935.0 and 1,010.4 kg respectively; milk fat yield by 52.9; 55.3; 45.3, and 49.9 kg are higher than the requirements of the republican standard of the Swiss breed. Studies have confirmed that the use of semen from cattle -producers of the Swiss breed in breeding herds, regardless of origin, has a positive effect on the improvement of the main selection characteristics of cows of the Swiss breed of Uzbekistan.

Dairy productivity of the Swiss breed procensor of different genotypes in Uzbekistan