Influence of feed additives on the meat quality of broiler carcass cross "Ross-308"

The purpose of the research is to study the effect of the spore-forming probiotic "Olin" and the prebiotic preparation "Ecofiltrum" on the meat qualities of broiler carcasses cross "Ross-308". The safety of broiler chickens in the experimental groups was slightly higher than in the control and amounted to 97.0% and 98.0% in the 2nd and 3rd experimental groups respectively, and in the control it was 95.0%. The introduction of both the prebiotic preparation "Ecofiltrum" and the probiotic "Olin" in the diet of broiler chickens contributed to an increase in their pre-slaughter weight and, accordingly, the weight of the gutted carcass. Thus, pre-slaughter weight increased by 4.3-5.7%; the weight of the gutted carcass - by 4.6-6.2%; muscle mass - 4.8-6.5%; the mass of sirloin muscles - by 5.7-8.2%. In the control group, the indicator "The ratio of edible parts to inedible" was 4.04, in the second experimental group - 4.08, and in the third - 4.14. The results of the anatomical cutting of broiler carcasses indicate that, in terms of fatness, the bird carcasses of the 2nd experimental group can be 87.2%, and the 3rd - by 87.5% can be attributed to grade I, and the yield of carcasses of grade I in the control was 86.2%. The meat products obtained both from the control poultry and from the poultry of both experimental groups had no foreign taste and odors, and the meat was juicy, tender and fragrant. Also, the products obtained from broiler chickens of the experimental groups did not have any deviations from the established standards and norms. In the process of research, it was found that the use of the studied preparations had a positive effect on the meat qualities of poultry carcasses. It should be noted that the introduction of the probiotic "Olin" in the feed of broiler chickens during the first 15 days of their cultivation in the amount of 0.022 g/head per day made it possible to obtain better results.