EFFICITNCY OF NECHNOLOGY FOR RAISING DAIRY CALVES

Abstract

This article presents the results of scientific research on raising Holstein-Friesian heifers from birth to fertile insemination, with the inclusion in the diet of experimental groups of the whole milk replacer "Neomilk" and the freely available commercial feed "Gavryusha", as well as the extruded feed "NFT KATU" produced Kazakh Agrotechnical Research University named after. S. Seifullin in the conditions of the Aina Dairy Farm LLP. The dynamics showed that the live weight of the heifers of the second еxperienced group at the age of 3 months was higher than that of the control heifers by 7.8 kg (8.8%) and the first experimental one by 6.8 kg (7.7%), respectively, in at the age of 12 months in heifers the difference was 106 kg (47.3%) and 77 kg (33.4%), and at 15 months of age the live weight of the heifers of the second experimental group reached an average of 389 kg, which made it possible to inseminate them fruitfully at 15- one month old. Hematological parameters in all groups were within normal limits, however, in heifers of the 2nd experimental group, the indicators of the number of erythrocytes and the saturation of erythrocytes with hemoglobin were higher, which indicates good metabolic processes in the body of the heifers. When calculating the efficiency of rearing technology, the heifers of the second experimental group occupied an advantageous position because the cost of feeding a day at 15 months of age for heifers of the second experimental group was 459 tenge, which is 186 (29%) and 135 tenge (23%) lower than in other groups, respectively.