Effect of supplementation of either powdered or encapsulated probiotic on carcass percentage, giblets and small intestinal morphometric of local duck

The purpose of this research was to evaluate the effect of supplementation of either powdered or encapsulated probiotic on carcass percentage, giblets and small intestinal morphometric of local duck. One hundred twenty male local day-old ducks (DOD) were distributed to 6 different dietary groups, included 2 probiotic forms of either powdered (T1) or encapsulated (T2) and 3 levels: 0% (L0), 0.2% (L1), 0.4%(L2). They were reared for 42 days (6 weeks). Variables observed were carcass percentage, giblets (gizzard, heart, liver) and small intestinal morphometric (villus height, villus width, crypt depth). Data were analyzed by Nested of Completely Randomized Design ANOVA and if there was significant effect followed by Duncan's Multiple Range Test (DMRT). The result showed that there was no significant effect (p>0.05) of the form of either powdered or encapsulated probiotic on carcass percentage, giblets weight, and small intestinal morphometric. However, increasing level of probiotic have a significant effect (p<0.05) on carcass percentage, villus height, and villus width, but did not significantly affect giblets weight and crypt depth. It could be concluded that supplementation of either powdered or encapsulated probiotic have similar result. It is suggested to use 0.4% of encapsulated probiotic in local duck diet.