Use of additive based on processed brewer’s grains in poultry feeding

Brewer's grain is a by-product of beer production, has a high biological potential due to dietary fiber and beta-glucan, which help animals to modulate the balance and activity of microbial populations in the intestine, so its use in combination with a mineral complex can increase the productivity of poultry. The paper discusses the effect of feeding complex feed additives based on processed brewer's grains as part of complete feed on the productivity, safety and control slaughter of quail-laying quails of the Texas white breed. The experiment was carried out in the vivarium of the Federal State Budgetary Scientific Institution Krasnodar Scientific Center for Animal Science and Veterinary Medicine on Texas white laying quails from 42 days of age to the 222nd day of rearing. The content of the bird was cellular in one tier. The conditions of detention corresponded to generally accepted zootechnical standards, the groups were formed by the method of pairs-analogues of 20 animals each. The first group was the control group and received a balanced complete feed (CF). For feeding the second group, CF was used with the addition of 1.5 % of the developed complex feed additive № 1 by weight of the feed. The third group received a complete mixed feed with the addition of 1.5 % complex additive № 2 by weight of the feed. It has been established that the use of the studied additives has a positive effect on the egg production of birds, increasing the gross collection of eggs by 3.17 and 3.82 % in the groups that received the studied additives. In the experimental groups, the slaughter qualities of laying quails improved. Thus, the weight of the gutted carcass increased by 8.30 % (P ≤ 0.01) in the second group, and by 9.08 % (P ≤ 0.001) in the third experimental group in relation to the control one. The use of complex additives based on processed brewer's grains contributed to an increase in production profitability by 3.22 and 3.24 % and additional profit per head by 11.9 and 12.6 % in the second and third groups, respectively, compared with the control group.