Influence of biologically active additives on dynamics of live weight and growth of muscles in poultry

Abstract

There is a lack of understanding of the effects of feed additives on the organs of different body systems of productive animals. The issues of the impact of biologically active additives to feed, their compatibility, are very relevant, and with an increase in the number and range of additives, the importance and criticality of the issue of their interaction increases. Some results of determining the dynamics of the gain in the weight of individual muscles of broiler chickens and Japanese quails have been received biologically active additives such as Rovimix Hy-D (25(OH) D₃, calcidiol, the main circulating metabolite of vitamin D) and the enzyme complex “Natuzim” have been presented in the paper. Indicators of the growth rate of the live weight of the poultry and the weight of the thoracic and thigh muscles were obtained for the growing periods. In the experiment on broilers, it was revealed that the addition of calcidiol with constant administration in the first two weeks of rearing had a rather negative effect on the growth of muscle weight and live weight. At the same time, the enzyme additive contributed to the increase in indicators at the beginning of rearing. In the second half of rearing on the contrary the enzyme additive had the negative effect on growth indicators, and calcidiol, especially in combination with mineral additive noticeably stimulates the growth of muscle weight and body weight in general. Japanese quails received the additive Rovimix Hy-D in three different dosages, because to date the additive has not been tested on quails. The data obtained confirm, from the one hand, the justification of the use of the feed additive Rovimix Hy-D as the additional source of vitamin D in broiler and quail feed, as well as the absolute need to take into account t