DEPENDENCE OF UKRAINIAN MILK PRODUCTIVITY OF BLACK–SPOTTED BREED ON THE INDEX IN ORIGIN
It was searched milk productivity of cows of Ukrainian Black – Spotted dairy breed based on the index in origin of Ltd. «Milk River» Sokal district, Lviv region. It was also established that with the increase of the index in origin milk productivity of cows in all studied lactation was increased. Animals, except for the first lactation, were dominated for milk yields and the amount of butterfat an average herd size for the index originally more than 5,000 kg of milk.
The proportion of index of the impact origin for yield, according to lactation was within 13,73–23,19, the fat content in milk – within 0,45–12,39 %, the amount of milk fat – within 14,78 –21,34 %. As the number of lactations its proportion and connection with indicators of yield and quantity of milk fat were decreased.
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