ВЛИЯНИЕ ИНТЕНСИВНОГО ВЫРАЩИВАНИЯ ГОЛШТИНСКИХ БЫЧКОВ ДЛЯ ПОЛУЧЕНИЯ ОПТИМАЛЬНОГО ХИМИЧЕСКОГО СОСТАВА ГОВЯДИНЫ

В статье изложены результаты исследований гематологических показателей крови и резистентности чистопородных сальских и помесных животных. Исследования уровня общего белка свидетельствуют, что по его содержанию у животных разных генотипов выявлены определенные различия. Установлено, что среди изучаемых животных большей выраженностью клеточного и гуморального иммунитета отличались трехпородные помеси.

Conditions of intensive calf rearing resulting in optimal chemical composition of beef in Holstein bull calves based upon elevated daily milk feeding, early shift to green fodder, and feeding probiotic additive Cellobacterine during the milk-feeding stage have been identified. The research was performed at Artex-Agro Ltd., Kushchevsky District of the Krasnodar Krai on the descendants of Australian-line Holstein cattle imported in 2008. The tests were carried out in 2009 - 2011. The calves were slaughtered at 15 and 18 months (n=3 calves in each Group, total 24 calves). The calves for the study were secured from Reflection Sovereign heifers and divided into 4 Groups (n=64). Each Group enrolled 16 bull calves: Group I was control, and Groups II, III and IV - test. Test bull calves had better balanced chemical composition of meat than the control Group animals. Bull calves in test Group III demonstrated advanced maturity of meat over the rest animals of the same age. Intensive rearing procedure involving elevated daily milk feeding improved with Cellobacterine probiotics had considerable impact over meat chemical composition and caloric value in bull calves of the test.