Using silos of legume-cereal grass mixtures in the young cattle diets

The purpose of the study is to increase the intensity of growth and development of young cattle when raising highly productive cows, as well as when fattening for meat through the use of energy-saturated high-protein silos harvested using new technology in feeding rations. Tasks: to study the chemical composition and nutritional value of silos of legume-grass mixtures; develop diets for young cattle with the inclusion of the studied silos in their composition; in experiments on animals to study the effect of the tested silos on the productivity of young cattle. The study of the chemical composition and nutritional value of feed was carried out in the laboratories of zooanalysis of the Bashkir Research Institute of Agriculture UFITs RAS and BashNPVL according to generally accepted methods of VIZh and VNIIFB and other leading scientific institutions. Silos from legume-grass mixtures harvested according to the new technology are real reserves for replenishing the range of feed for young cattle when raising highly productive cows during the winter-stall period of keeping, as well as when fattening for meat. 1 kg of feed contains 0.22-0.24 ECU and 19.0-23.9 g of digestible protein. Feeding heifers 7 kg/head/day of silage of a mixture of eastern goat's rue and awnless brome increases the intensity of their growth. Compared with the control, the average daily gain in live weight of the animals of the experimental group was higher by 7.8 %. The use of 12 and 17 kg of silage of a mixture of eastern goat's rue and awnless brome in the diets of fattened young animals can reduce the cost of concentrated feed per unit of growth by 9.3 and 37.2 %.