Bulletin Samara State Agricultural AcademyBulletin Samara State Agricultural Academy1997-32252782-4225Samara State Agrarian University22967Research ArticleCOMPARATIVE ASSESSMENT OF UTERINE CATTLE REPRODUCTIVE QUALITIES OF KAZAKH WHITE-HEADED AND HEREFORD BREEDSValitovH Zdr. of agricultural sciences, prof. of the department «Production Technology of Livestock Products»Valitov1958@rambler.ruBerzhanovV Bundergraduate of the department «Production Technology of Livestock Products»Yofn@mail .ruFSBEI HVE SSAA15032015110510811032020Copyright © 2015, Valitov H.Z., Berzhanov V.B.2015The purpose of research is reproductive qualities increasing of uterine cattle of the Kazakh White-headed and Hereford breeds in the conditions of Tukushev country (farmer) economy of Michurinsk Region of West Kazakhstan region of the Kazakhstan Republic was the purpose of our researches. Work was carried out to two stages. In the first stage object of research were heifers of the Kazakh White-headed and Hereford breeds. In the second stage cows of the Kazakh White-headed and Hereford breeds were object of researches. Animals of experimental groups throughout experience were in identical conditions of feeding and the contents. During researches it is established that at animal experimental groups distinction had age of manifestation of the first sexual cycles. It is established that the beginning of puberty at Hereford heifers breed steps on 11.9 days (5.6%, P <0.05) earlier, than at analogs of the Kazakh white-headed breed. Puberty duration at girls of Hereford breed made 63.1 days that for 9.4 days (14.9%, P<0.01) is shorter, than at Kazakh White-headed breed heifers. Owing to late puberty of the Kazakh White-headed breed heifers, Hereford breed the first time were inseminated at the age of 454.8 days that for 12.6 days earlier, than at the compared contemporaries. The age of fruitful insemination of Hereford breed made 477.2 days that is 29.2 days less (5.8%, P<0,05), than Kazakh White-headed breed heifers. The age of the first Hereford breed heifers deliver consists of 756.2 days, and at contemporaries of the Kazakh White-headed breed of 782.1 days, that is duration of the heifers unproductive period of the first group for 25.9 days is less (3,3%, P<0,05) in comparison with the corresponding indicator of contemporaries. The issue exit at the Kazakh Wite-headed breed made 96.3% that is 7.4% higher in comparison with Herefords and as a result of KVS at Herefords is 0.04 less than at analogs.breedreproductionmaturingbreedingdeliverinseminationпородавоспроизводствосозреваниеразведениеотёлосеменение[Дунин, И. М. Настоящее и будущее отечественного скотоводства / И. Дунин, В. Шаркаев, А. Кочетков // Молочное и мясное скотоводство. - 2012. - №6. - С. 2-5.][Дунин, И. М. Перспективы развития мясного скотоводства России в современных условиях / И. М. Дунин, Г. И. Шичкин, А. А. Кочетков // Молочное и мясное скотоводство. - 2014. - №5. - С. 2-5.][Калашников, В. Мясное скотоводство: состояние, проблемы и перспективы развития / В. Калашников, Х. Амерханов, В. Левахин // Молочное и мясное скотоводство. - 2010. - №51. - С. 2-5.][Мысик, А. Т. Состояние животноводства в мире, на континентах, в отдельных странах и направления развития // Зоотехния. - 2014. - №1. - С. 2-6.][Небурчилова, Н. Ф. Экономическая устойчивость мясной отрасли в условиях вступления России в ВТО / Н. Ф. Небурчилова, А. С. Чернова // Мясная индустрия. - 2012. - №8. - С. 14-17.][Некрасов, А. А. Интенсивность выращивания тёлок и их последующие воспроизводительные качества / А. А. Некрасов, Н. А. Попов, Н. А. Некрасова [и др.] // Зоотехния. - 2013. - №4. - С. 2-4.][Управление репродукцией в мясном скотоводстве : практическое руководство / Г. П. Легошин [и др.]. - Дубровицы : ГНУ ВИЖ Россельхозакадемии. - 2012. - 88 с.][Шагалиев, Ф. Получение телят - дело ответственное / Ф. Шагалиев, Г. Нигиатуллин // Мясное скотоводство. - 2013. - №12. - С. 51-52.][Шарафутдинов, Г. С. Холмогорский скот Татарстана эволюция, совершенствовании и сохранение генофонда : монография / Г. С. Шарафутдинов, Ф. С. Сибгатуллин, К. К. Аджибеков [и др.]. - Казань : Изд-во Казанск. ун-та, 2004. -][292 с.]