The Effects of a Probiotic Dietary Supplementation on the Livability and Weight Gain of Broilers

This paper presents the effects of probiotic additive “Vetosporin-Active” dietary supplementation on the livability and weight gain of chicken broilers. The “Vetosporin Active” probiotic additive based on two bacillus subtilis strains (Bacillussubtilis 11 В и Bacillussubtilis 12В). Four hundred broilers were allocated to four groups. The first group (I) was the control, fed with a diet without the addition of the probiotic. For II, III and IV groups the “Vetosporin Active” probiotic additive was incorporated in the diet at the level of 0.5, 1 and 1.5 g/kg, respectively. Dietary supplementation of broilers with 1 g/kg of “Vetosporin-Active” increased the average daily weight gain of chicken broilers (13.1%). The data analysis showed that the highest weight gain of chicken-broilers was observed during the first week of their life.