THE INFLUENCE TYPES OF FEED ON REARING CALVES

Abstract

This article presents the results of scientific research on the cultivation of calves of the Holstein-Frisian breed in the dairy period. In the conditions of Dairy Farm «Aina» LLP, a chemical analysis of the main feeds of the calves' diet was carried out. Three groups of calves were selected according to the method of analogues for conducting basic growth and development studies: the 1st basic diet, the 2nd substitute + «Gavryusha», the 3rd substitute + «NFT KATU» produced by the Kazakh Agrotechnical Research University named after S. Seifullin. The calves were kept in the same conditions. Studies were conducted to study the dynamics of body weight growth of calves of three groups, from birth to 6 months of age, with the establishment of absolute, average daily and relative body weight gains. The analysis of exterior indicators (measurements) and indicators of the calves' physique is made. Body weight indicators of calves of the 3rd group at the age of 3 months were higher than those of calves of other groups by 7.8 kg (8.8%) and 6.8 kg (7.7%), respectively, and at the age of 6 months, calves of the 3rd group exceeded the indicators of calves of the control and 1st groups by 34 kg or 23% and 24 kg or 16%. The indicators of the 3rd group in absolute growth were at the level of 22.6 kg or 8% higher at 3 months of age compared to the other two groups, and at 6 months of age this indicator was 23.4 kg or 5% and 26.9% higher than in the compared groups. The physique indicators of monthly calves were relatively the same, and the indicators of the calves of the 3rd group on the breast index were 3.25% and 3.27% higher than those of the other two groups. The downfall index at the age of 6 months in the 3rd group was 116.6%, which is 2.97% and 5.47% higher than in other groups. In general, in the experimental group of calves, all indicators of the physique index were at a high level, i.e. the feeding scheme of calves of the 3rd group (substitute + «NFT KATU») can be recommended for production where dairy cattle are bred.