Feed additive on the basis of beer grinder in broiler poultry

The aim of the research was to study the effectiveness of the use of feed supplements based on brewer's grains in compound feed for broiler chickens. It has been established that the use of feed additives in mixed feed for broiler chickens contributes to an increase in live weight by 3.8 -8.0 %. Feed costs per 1 kg of live weight gain were lower in the second experimental group by 6.3 %, in the third - by 2.9 % and in the fourth - by 8.0 %. The yield of the whole carcass in the control group was 88.3 %, in the second - 89.6, in the third - 88.0 %, in the fourth - 89.8 %. Slaughter output of gutted carcasses in the first group was 72.3 %, in the second - 72.2, in the third - 72.5 %, in the fourth - 72.9 %. The greatest muscle output was noted in the third and fourth groups - 53.4 %. The output of the pectoral muscles was the highest in the fourth group - 30.3 %. The highest output of the femoral muscles was noted in the second group - 12.6 %, and the leg muscles in the third group - 11.3 %. As a result of the anatomical cutting of the carcasses, it was revealed that the mass of the gizzard significantly increased in all experimental groups. There is a tendency to decrease in all experimental groups, the mass of the liver and glandular stomach in the fourth group. The optimal dosage of the feed additive was 1.5 % by weight of the feed.