Б а с р е д а к т о р ы х.ғ.д., проф., ҚР ҰҒА академигі М.Ж. Жұрынов Р е д а к ц и я а л қ а с ы: Абиев Р.Ш. проф. (Ресей) Абылкасымова А.Е. проф., академик (Қазақстан) Аврамов К.В. проф. (Украина) Аппель Юрген проф. (Германия) Баймуқанов Д.А. проф., академик (Қазақстан) Баймұратов У.Б. проф., академик (Қазақстан) Байтанаев Б.А. проф., академик (Қазақстан) Байтулин И.О. проф., академик (Қазақстан) Банас Иозеф проф. (Польша) Берсимбаев Р.И. проф., академик (Қазақстан) Велесько С. проф. (Германия) Велихов Е.П. проф., РҒА академигі (Ресей) Кабульдинов З.Е. проф. (Қазақстан) Қажыбек Е.З. проф., корр.-мүшесі (Қазақстан) Қалимолдаев М.Н. проф., академик (Қазақстан), бас ред. орынбасары Қамзабекұлы Д. проф., академик (Қазақстан) Қойгелдиев М.К. проф., академик (Қазақстан) Лупашку Ф. проф., корр.-мүшесі (Молдова) Мохд Хасан Селамат проф. (Малайзия) Новак Изабелла проф. (Польша) Огарь Н.П. проф., корр.-мүшесі (Қазақстан) Полещук О.Х. проф. (Ресей) Поняев А.И. проф. (Ресей) Сагиян А.С. проф., академик (Армения) Таймагамбетов Ж.К. проф., академик (Қазақстан) Хрипунов Г.С. проф. (Украина) Шəукенова З.К. проф., корр.-мүшесі (Қазақстан) Юлдашбаев Ю.А. проф., РҒА академигі (Ресей) Якубова М.М. проф., академик (Тəжікстан) «Қазақстан Республикасы Ұлттық ғылым академиясының Хабаршысы».
The study analysed absolute, average daily and relative live weight growth indices in replacement of the holstein friesian (black-and-white) heifers for the breeding period. The study was conducted at AO (JSC) «Uchkhoz Iyulskoe Izhevsk state agricultural academy» in Votkinsk district of Udmurt Republic. Also, the study focused on dynamics of body measurements in the young animals of different origin from birth to the age of 12 months. Maintenance and feeding conditions met the physiological requirements. The heifers demonstrated the highest growth indices at the age of 6–9 months. The absolute weight gain was 67,8 kg, the average daily weight gain was 753,5 g. As for the dynamics of body measurements a significant increase was observed up to the age of 6 months. Height measurements increased by an average of 11–15 cm, oblique body length rose by 20 cm, chest measurements increased by 8–30 cm, hip width grew by 9 cm and shank measurements increased by 2 cm on average for the study period. Depending on the origin, it was found that heifers of the lines by R. Sovering and V.B. Ideal had the highest absolute and average daily weight values at the age of 9 months, they were 73,6 kg, 817,3 g and 69,1 kg, 768,2 g, respectively. M. Chiftain’s line heifers showed the lowest growth indices in all of the analysed age periods. Heifers of the line by V.B. Ideal demonstrated the greatest increase in body measurements with age. Up to the age of 6 months, their main body measurements exceeded other line heifers by 6–10 cm. From the age of 9 months, the largest increase in measurements was observed in R. Sovering’ line heifers, these indices were higher by 2–3 cm than in other line heifers.
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