Impact of Nano-selenium on Sheep Rumen Degradability Rate of Concentrates Nutrition

Using four sheep with body weight of(40 ± 2.0) kg,fitted with permanent rumen fistula,fed with mixed concentrate-based diets,and using of 4×4 Latin square design to study the nano-selenium diet(0,0.3,3,6 g/d) of feed nutrients in sheep rumen degradation rate.The results show that: in 3 g/d group,concentrated feed crude protein(CP) ruminal degradation rate was significantly increased(P0.05),in 6,0.3 g/d groups concentrated feed crude protein(CP) ruminal degradation rates showed no significant differences(P0.05) with that of the control group;diet nano-selenium showed no significant difference(P0.05) on dry matter of feed(DM),organic matter(OM) and rumen degradability.It suggested that the added dietary nano-selenium at level of 3 g/d played a significant role to promote rumen fermentatio,so it was appropriate to add at level of 3 g/d.