МОЛОЧНА ПРОДУКТИВНІСТЬ КОРІВ МОЛОЧНИХ ТА КОМБІНОВАНИХ ПОРІД В УМОВАХ ЗАХІДНОГО РЕГІОНУ УКРАЇНИ
Researched milk production of cows Ukrainian black- and Red-spotted milk breed, Ayrshyr, Red Polish, Simmental and Brown Carpathian breeds at first, second, third, fourth, fifth and better lactation. Established that milk cows and combined breeds in the western region of Ukraine were characterized by different milk yield, fat content in milk and amount of milk fat. Among dairy breeds highest yield recorded in cows Ukrainian black and white dairy and Ayrshyr species, and among combined - in Simmental. The lowest yield in cows were Red Polish and Brown Carpathian breeds. The content of fat in milk and the amount of milk fat were better Ayrshyr. In most animal breedes studied highest milk yield was observed for the third lactation cows and only Ukrainian Red-spotted breast and Simmental breeds - the fourth lactation. There were changes in milk yield of cows studied breeds with each subsequent lactation. Thus, the yield in the first lactation animals of Ukrainian black and white dairy cattle was 95.2 % of the yield for the second, for the second lactation - 91.9 % of the yield for the third, in the third - 100.2 % of the yield in the fourth and fourth - 104.8 % of the yield for the fifth lactation; cows Ukrainian Red-spotted milk - 87.9, respectively; 91.8; 97.1 and 104.9 ; Red Polish - 87.3; 87.9 ; 102.4 and 100.6 ; Ayrshyr - 94.2; 98.7 ; 104.1 and 102.1 ; Simmental - 91.8 ; 89.4 ; 96.7 and 105.8 and Brown Carpathian - 87.8 ; 90.9 ; 105.4 and 103.0 %.