Effect of biologically active substances of pine nut shells on productive indicators of young quails

Abstract

The results of the use of secondary raw materials of plant origin (pine nutshells) as a feed additive for quail breeding are presented. A review of the study of biologically active substances of Siberian pine nut shells (Pínus sibírica) and their effects on the body of animals is given. The studies were performed on Japanese quail chicks up to the age of 80 days in the conditions of a quail farm. At one day of age, three groups of chickens were formed with 40 animals in each group. The control group received the basic diet (BD), the 1st experimental group - 99.05% BD + 0.05% powder of pine nutshells, the 2nd experimental group - 99.9% BD + 0.1% powder of pine nutshells. It was found that the best results were obtained when including 0,1% of the feed additive into the basic diet: 10,44% increase in the absolute live weight gain, 7,5% increase in safety, 12,2% decrease in feed consumption. The control slaughter of the 2nd experimental group cockerels at the end of the studies confirmed the positive effect of the additive - increasing the pre-slaughter live weight by 7.98%, the slaughter yield - by 3.01% compared with the control group. The chemical composition of meat of the 2nd experimental group differed from the control by an increase in the dry matter by 4.28%, crude fat by 3.86%, a decrease in crude ash by 0.33%. Тhe amino acid composition was more complete in the content of lysine, arginine, alanine, asparagine, glutamine and the amount of essential and substitutable amino acids compared with the control group, indicating improved meat quality of the experimental quails.