Influence of the feed additive GrandVitam on parameters of growth and slaughter yield in broiler chickens

Increase in meat productivity of broiler chickens and increase in production profitability can be achieved by developing new technological methods for improving the genetic potential of poultry and using biologically active feed additives. The purpose of the research was to study the influence of the feed additive GrandVitam on growth rates and slaughter yield in broiler chickens. The research was carried out on broiler chickens of the cross ROSS 308. During the experiment, two groups of day-old broiler chickens were formed, per 500 heads in each group without separation by sex. The experiment was carried out for 39 days before the slaughter of broilers. The control and experimental groups of broilers received complete balanced compound feed. The feed additive GrandVitam was added to the water of chickens in the experimental group at a rate of 0.5 l per 1000 l of water and they were watered during the fi rst 10 days of rearing. Before slaughter the broiler chickens in the experimental group had an average live weight of 2560 g, which was significantly 210.0 g more than in the control group (p< 0.001). The average daily live weight gain during the rearing period was 60.6 g in the control group and 66.2 g in the experimental group, with a difference of 5.6 g. Feed costs per 1 kg of live weight gain in both groups were approximately the same and were 1.57 kg in the control group and 1.55 kg in the experimental group. The survivability of broilers in the experimental group was 90.0 % and was by 2.0 abs.% higher than in the control group. The slaughter yield in the control group was 75.7 %, and in the experimental group it was 77.5, which was by 1.8 abs.% more than in the experimental group. Thus, the feed additive GrandVitam, which was added to water had a positive effect on the animal science growth indicators of broiler chickens and had a beneficial effect on the slaughter yield of carcasses.