Industrial birds experience stress factors which decrease productivity and cause economic damages to the food security of Russia. However, the modern agrarian science develops and applies stress protectors which increase growth, development and safety of chickens and their meat productivity. The “PIK Antistress” at doses of 1269 and 1693 g/t used 5 days before slaughter increased the average daily weight gain by 0.7-6.6%, the absolute weight gain by 2.3-9.4%, livability by 1.5-2.3%, the ratio of feeding efficiency by 4.5-24.6%, the amount of meat by 0.6-1.2%, the category of meat by 18.5-20.0%.
The aim of the research was to study the effect of feed additive on the biological value of broiler chickens’ white meat protein under pre-slaughter stress conditions. The experiment was carried out on Arbor Acres broiler chickens in the conditions of an industrial poultry farm with floor housing technology. The main diet of poultry in the I experimental group was introduced with feed additive at a 1269 g/t feed dose, II - at a dose of 1693 g/t. The control group poultry received only the main diet. As a result, the white meat of broiler chickens of experimental groups contained 1.5-6.8% more essential amino acids, substituted by 1.3-5.5% compared to control. In the amino acid composition of the broiler chickens’ meat of the experimental group I, the most pronounced changes in the content of essential and dispensable amino acids were revealed; their level was above the control by an average of 3.7 and 2.9% respectively. White meat proteins of broiler chickens of the I experimental group were more biologically valuable; their amino acid score was above control by an average of 4.5%.
The article analyzes the results of the effect of the anti-stress feed additive PIK-antistress on the biochemical composition of the blood serum of broiler chickens during slaughter. The obtained results showed that the used feed additive did not have a negative effect on metabolism and energy, such as - protein, carbohydrate, mineral; the total amount of protein in the blood serum increases by 5.3-7.5%, mainly due to an increase in globulin fractions; the amount of total calcium and inorganic phosphorus increases by 19.3% and 5.0-5.8%, respectively, while the level of alkaline phosphatase becomes lower - by 18.0%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.