Abstract:

The experiment was conducted to examine the effects of Burdock fructo- oligosaccharide(BFOS) as additives on performance and nitrogen balance after it added to the sheep basal diet . 40 Small Tail Han sheep and Poll Dorset F2 Hybrids,3~4-month-old male lamp with an initial weight of 32 kg were randomly divided into 4 groups, which were dose BFOS of 0、3.2、6.4、9.6g/d diet respectively. The results showed that: performance and N balance in sheep was not obviously affected by BFOS supplementation (P>0.05). However, Compared to the control treatment ,Sheep fed BFOS tended to improve performance(such as daily gain,feed conversion etc) and N utilization, decrease N excretion.The addition level was 9.6g/d,it could improve performance and nitrogen balance in sheep.