ECONOMIC EFFICIENCY OF HOLSTEIN COWS OF DIFFERENT LINES

Abstract

The paper presents the economic efficiency of milk production in the Northern region of Kazakhstan. The directions of increasing the profitability of dairy cattle breeding are formed. Studies have shown that cows in three lactations of three genetic lines: Reflex Sovering, Wis Beck Aidial and Osborndale Ivanhoe had the best milk yield and milk fat in Wis Beck Aidial cows. Their average milk yield in the first three lactations was 7557 kg, which was 251 kg (3.32%) higher than that of the Reflex Sovering cows. Consequently, the farm is most effective in using breeders belonging to the Vis Beck Aidial line. The main indicator in assessing the reproductive performance of animals is the reproductive rate. It was highest in animals of Vis Beck Aidial line, with the age of the first fruitful insemination of heifers at 16-17 months. During the first three lactations the reproductive ability coefficient was in a range of 1.0 -1.01. The best reproductive longevity, 3.57 lactations, was observed in cows which were first inseminated at 16-17 months of age. Consequently, to increase milk production on the farm, it is advisable to focus on the Vis Aidial line, as it is more highly milked and has better economic indicators