Experience of application of an alternative source of protein for feeding of broiler chickens

Abstract

Proteins are obligated components of cells of any living organism that perform vital functions: catalytic, regulatory, transport, bioenergetic, protective against infections and other stress factors, structural, spare, etc. The purpose of the work was to evaluate the effect of the feed additive „Feed bioprotein“ in the form of powder on the main economic indicators characterizing the efficiency of broiler chickens rearing. „Feed bioprotein“ is a high-protein feed additive and is a biomass of inactivated methanassimilating bacteria Methylococcus capsulatus. The high content of protein and essential amino acids in the composition of this feed additive allows it to be introduced into the feed including for broiler chickens to replace other high-protein components such as fish and meat and bone meal, soy and sunflower meal. When conducting a production experiment on broiler chickens in the cross Ross 308, feed which was used to feed the poultry of the experimental groups, in which a feed additive was introduced, both in the minimum and maximum dosage recommended by the manufacturer for this species of animals. Broiler chickens of the control group have been received feed prepared according to a standard recipe. At the end of the 41 day rearing cycle in the experimental groups, the average daily gain in live weight exceeded the results of the control group by 2,6–5,1 %, feed conversion was by 2,3–3,4 % higher, and poultry livability was by 2 abs.% higher than in the control group. At the same time, higher rates have been observed in the group where the feed additive “Feed bioprotein” was used in the maximum dosage.