EFFECT OF LIVE WEIGHT OF HEIFERS OF UKRAINIAN BLACK-MOTLEY BREED ON THEIR MILK PERFORMANCE
Abstract
Correlation between live weight of heifers, milk yield and milk composition of first calvedcows of black-motley breed has been studied. It has been proved that heifers that reached 381-400 kg live weight at the age of 15 months have showed higher milk, milk fat and protein yields. Live weight of heifers of different ages is positively correlated with milk yield of heifers and negatively - with the fat and protein content in milk. Resulting from research ranges of optimal bodyweight should be used in compiling of plans for growing heifers of Ukrainian Black-motley dairy breed, and as a criterion for their selection, which will help to obtain cows with high milk yield.
About the Author
T. A. Antoniuk
National University of Life and Environmental Sciences of Ukraine Correlation between live weight of heifers, milk yield and milk composition of first calved
Russian Federation
Russian Federation
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Review
For citations:
Antoniuk T.A. EFFECT OF LIVE WEIGHT OF HEIFERS OF UKRAINIAN BLACK-MOTLEY BREED ON THEIR MILK PERFORMANCE. Zootechnical Science of Belarus. 2015;50(2):133-140. (In Russ.)
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