Technology of maintenance, feeding and cultivation breeding repair young animals

¹ FGBOU IN Bryansk State Agrarian University, Bryansk, Russia
² Bryan Testing Laboratory of FSBI “VNIIZH”, Bryansk, Russia
³ RUE “Scientific and Practical Center of the National Academy of Sciences of Belarus on Animal Husbandry”, Zhodino, Russia

^* Corresponding author: vet@bgsha.com

Abstract

After studying the technology of keeping, feeding and rearing breeding repair young cattle of dairy production from birth to 18 months, it was found that calves from birth to one month of age are kept in individual houses, and from 3 months to 18 months, group care is free in machines both indoors and on walking grounds (from 15 to 80 heads). As the age of breeding repair young animals increases, the concentration of energy feed units per 1 kg of dry matter decreases from 1.22 to 0.98. Similarly, there was a decrease in digestible protein per ECU from 121 g to 85 g. Conversely, as the pancreas developed and the animals grew, the consumption of crude fiber in the dry matter of the diet increased from 13.7% to 25.4%. Over the past five years of research, the daily increment of muscle and adipose tissue in breeding bulls for a year was at least 900 g, and in repair heifers for a year and a half – at a level of at least 770 g. Such growth dynamics helped the repair heifers to reach a live weight of 380 kg at 14 months and fruitfully inseminate them. During the study period, the farm increased the sale of breeding repair bulls by 54.5% and breeding repair heifers by 2.47 times to breeding and commodity farms in the region, compared with 2019.