Effect of Lacto Sacc, Yea Sacc and Toyocerin on the Performances and the Colonization of E. coli in the Small Intestine and Caeca of Broiler Chicken

摘要

An experiment was carried out with 750 broiler chickens to evaluate and compare the influence of dietary supplementation of 0.1 % Lacto Sacc, 0.1 % Yea Sacc, 0.01 % Toyocerin and 0.01 % Avotan in the diets on the growth, feed conversion ratio and thenumber of E. coli in the duodenum, jejunum and caeca of broiler chickens. Broiler chickens, which received diets containing probiotics and Avotan, grew faster than those given the basal diet for the first 4 weeks. Feed conversion ratio was improved following Lacto Sacc, Yea Sacc and Avotan supplementation, but not for the group fed with Toyocerin. Supplementation of Lacto Sacc significantly decreased and of Toyocerin increased the number of E. coli in the duodenum. The number of E. coli in the jejunum significantly decreased only with the supplementation of Avotan. There was no significant difference in the number of E. coli in the caeca.