Comparison of the effects of three different types of probiotics on the alkaline phosphatase activities of the small intestine mucosa of broiler chicks.

2 Abstract: An experiment was conducted to study the effects of different types of probiotic on alkaline phosphatase activities of the small intestine mucosa of broilers. The experimental design was arranged as randomized completely blocks in 4 × 2 factorial arrangement of treatment. 180 male broilers of Ross 308 commercial hybrid were designated into 4 groups. Three replicates of 15 birds were assigned to each treatment. Control treatments (diet contained no probiotic) were fed according to the NRC as base diet and three treatment groups were fed from the same diet plus three different types of probiotics. Birds were slaughtered after 21 and 42 days and different segments of small intestine(at 1, 10, 30, 50, 70 and 90% of total length the small intestine) were taken from e ach replicates (N=2) Alkaline phosphatase enzyme activities were measured and recorded. Obtained data were analyzed by Spss (P<0.05). In three treatment groups probiotic, significantly increased alkaline phosphatase (ALP) activities at 21days of age at different sites along the small intestine of the broiler chicks (P<0.05), these data suggested that probiotics administration have significant effect on treatments comparing to control group.