Object: To Investigate the effect of probiotic on
morphology of small intestine in roosters.
Design: Factoriel 4 x 6 in completely randomized design.
Animals: 240 male broilers of Ross commecial hybrid
designated into 4 groups(N= 60 chi:ks). Procedure: Experimental groups were fed diet with
different levels of probiotic (Bioplus 2B) from day 1- 42.Treatrrient were done with just diet (basal or 0%) and
with increasing percentages of probiotic(0.05, 0.01 and
0.15%).Different segments of small intestine (1, 10,30,50,
70 and 90% of total length) were extracted from each group
(n=5) and analyzed for villus indices (hight(H), width(W),
H/W ratio), depth of cripts and villus types (tongue shape,
leaf shape, finger like, bridge from, ridged and convoluted) were recorded.
Statistical Analysis: Data were analyzed through ANOVA
by MSTATC and means of different villus parameters
were compared by Duncans Multiple test. Results: While intake of varius levels of probiotic
significantly increased villus height in the first part of
small intestine above basal levels(P<0.05), its width had
any change. H/W ratio was not affected by the probiotic
intake. Despite an apparent increase of crypt depth in the
first and last segments of small intestine (P<0.05) probiotic
intake did not change it in the mid portion of the intestine.
Percentage of different types of villi Li were not affected by consumption of probiotic.
Conclussion: Administration of probiotic in poultry diets
increases villus height of the first segment and crypt depth
in the first and last parts of small intestine. These data
suggest that probiotic administration providing increased
food digestion and absorption in chickens. J.Fac. Vet.Med.
Univ. Tehran. 60,3:205-211,2005.