Effect of Zeolite on microbial load of intestine in broilers

In this research¡ effects of diet containing 0.5¡ 1 and 1.5 percent aminabad Qom zeolite and 1 percent commercial zeolite(anzemite) investigated on microbial load of intestine broilers. 400 day old male broiler chicks were bought and were allocated to 20 pens(5 treatments with 4 repetitions) equally. The control treatment got basal diet only. All chicks had kept in the same condition. In 42 day¡ 2 chicks to be butchered from each pen and sampling was done from the intestine of them. The samples were cultured in BA and EMB by serial dilution method .Colonies was accented after 24 h in 37˚. Measured PH of intestinal samples . E.coli were isolated from intestinal samples. They were tested antibiogram. The results showed that supplementation with zeolite don''t make a change in ph compared with the control diet¡ and that chicks fed with zeolite didn''t showed significant change in total microbial load . Supplementation with zeolite significantly reduced the counts of Entrobacteriaceae in the intestine(p