EXTERIOR AND DAIRY PRODUCTIVITY OF FIRST-CALF HEIFERS OF DAIRY-MEAT DIRECTIONS OF PRODUCTIVITY

Abstract

The article shows the data analysis of conformation of Simmental cattle by a linear method, the construction of cow’s outline diagram based on it, the assessment of milk productivity and milk quality, interrelation of indicators of the exterior and milk productivity. The exterior of the Simmental cattle, estimated by the linear method is good enough, the animals are balanced and well-proportioned. The best average indicators were obtained by general appearance - 74.2 points, the main mass of cows was characterized by 60-80 or more points. On average all heifers, included in the assessment are classified adequately. The daily average milking of the heifers was at the level of 17.8 kg, fatness content was 3.75%, protein-milk production was 3.23%. There were productivity changes in February, May and August. This is due to the fact that the largest calving of cows was in these months.
The average daily milk yield limit was 16.48-19.29 kg during the year. The overage number of somatic cells was 293 thousand/ml. The strongest deviations were observed in the winter and autumn months. The relationship between such signs as milk yield and udder indicators was average and low. In future, the data accumulation on the exterior, productivity, quality of milk will allow us to
calculate the index of breeding value of cows.