INFLUENCE OF BIOLOGICALLY ACTIVE PREPARATIONS ON THE PROCESSES OF QUAILS’ DIGESTIVE METABOLISM
In Russia quails breeding becomes a new efficient branch of poultry farming;this new branch can meet the needs of Russian consumers in such dietary poultry products as meat. Interest in this branch is due to the high organoleptic qualities of their meat. Quail meat is characterized bytenderconsistency, aroma and juiciness. However, their meat products are formed taking into account the conditions of feeding, including the influence of biologically active additives. The aim of the research was to study the effect of biologically active preparations on the processes of digestive metabolism in test birds. To achieve this aim two physiological exchange experiments were conducted on quails grown for meat, for which four groups of experimental birds were formed according to the method of analogue groups. In the course of the first experiment it was found that more effective for the processes of quails’ digestive metabolism was using in diets ofbarley-sorghum-soy type antioxidant preparations Hadox at a dose of 150 g/t of feed and vitamin E at a dose of 25 thousand IU/t of feed. Under the influence of these preparations the significant increase in the proteinases, cellulase and amylases activity of the gastrointestinal tract contents occurred in the poultry of the 4thtest group. The consequence of this was the significant increase in the digestibility ratios of crude protein, fiber and nitrogen-free extractives, as well as the daily nitrogen depositsin the rations ofthis quail group. In the course of the second experiment it was found that the best feeding dose of probiotic Bioximin “Chicken” for quails is 1.5 kg/t of mixed fodder with the tolerant level of aflatoxins. Under the influence of the specified probiotic dose poultry of the 4thtest group also had the significant increase in the activity of proteinases, cellulases and amylases in the content of their gastrointestinal tract. Thanks to this, the quails of this group experienced significant increase in the digestibility ratios of crude protein, fiber and nitrogen-free extractives as well as the daily deposit of diet nitrogen.