For the first time, the effect of new import-substituting feed additives of domestic production “SoykoLak” together with the mineral complex “Fortshel” on the production quality and the productivity of broiler chickens has been studied in practice. The use of these additives in chickens’ diet can significantly increase their productivity and reduce feed consumption. At the end of the experiment, the average live weight of the chickens in the experimental groups significantly exceeded that of the control group. At the age of 21 and 28 days, the chickens in the experimental group increased in live weight. At the age of 28 days, the live weight of broilers in the second experimental group was by 3.3 % higher than that of the control group. The difference between the control group and the second experimental group at the end of the study was 25.4 % (p<0.01). The live weight of broiler chickens in the first and third experimental groups exceeded that of the control group by 17.55 and 23.58 %, respectively. The liveability of broilers was consistently high throughout the study, with the following indicators at the end: 95 % in the control group, 97 % in the first and third experimental groups, and 98 % in the second experimental group. Feed consumption in the experimental groups were lower than those in the control group by 2.23, 5.03, and 3.35 %, respectively. Serum biochemical parameters in the experimental groups were within physiological norms. Including the probiotic “SoykoLak” and the mineral additive “Fortshel” in the broiler chickens’ diet had a positive effect on the chemical composition of poultry carcasses.
Hohlova et al. (Wed,) studied this question.