Evaluation of the effect of prebiotics (MOS), probiotics (Bacillus licheniformis and Bacillus sibtillis) and growth promoter in broiler diets)

Abstract

A study with 2,400 broilers was carried out to compare the effect of probiotics, (Bacillus
licheniformis and Bacillus subtilis) probiotics plus mananoligosaccharides (MOS), or growth promoter
(Avilamycin) and a control diet without aditives. Diets were based on corn and soybean meal. A
completely randomized experimental design was used, and the data were evaluated by analysis of
variance and test of Tukey at a level of 5%. The following parameters were measured: feed intake,
daily weight gain, feed conversion ratio, and mortality. It was concluded that the effect of the inclusion
of probiotics and MOS in the starter diets was significantly higher for the weight gain than the other
groups. The feed ratio was significantly higher at the first week as compared to the inclusion of
MOS, or to the growth promoter and the control diet. In the full period the effect of the inclusion of
probiotics , MOS and growth promoter was significantly higher for the weight gain than the control
diet.