интенсификация, воспроизводство крупного рогатого скота, ранняя диагностика, ультразвуковая диагностика, беременность, бесплодие, Agriculture

The reproduction intensification directly depends on carrying out of early diagnosis of pregnancy and infertility at the inseminated highly productive dairy cows. In work are introduced ultrasonic researches of cows and young cows on a pregnancy, advantages of application of ultrasonic sound in comparison with rectal research are taped. On a findings of investigation defined sensitivity and specificity of ultrasonic diagnosis. In a findings of investigation defined times of a pregnancy of cows and young cows after an insemination. The optimal conditions of carrying out of ultrasonic diagnosis at cows and young cows are positioned.