Abstract:

The research was carried on substitutability of adding Diamond V“XP”-yeast culture into diets instead of Antibiotics by the effects on growth and development in early-weaned lambs. Selected 42 early-weaned (55±2 days, weighted 7.91±0.83 kg) Tibetan lambs, divided into 3 groups randomly (14 in every groups, half males and half females), feeding basal diet which levels of crude protein and energy were 18.02% and 12.95 MJ/kg separately. The first group (groupⅠ) was basal diet, the second group (groupⅡ) was basal diet with 1% Diamond V“XP”-yeast culture, the third group (groupⅢ) was basal diet with 0.03% monensin. The results showed that the daily gain of Tibetan lambs in groupⅡ were significantly（p<0.01）greater than groupⅠ and groupⅢ; the feed intake of Tibetan lambs in groupⅡ was higher than groupⅠ and groupⅢ, and which diarrhea rate in groupⅡ was significantly (P<0.05) lower than groupⅠ and groupⅢ; there were no obvious difference (P>0.05) among the three groups in blood glucose (GLU), blood urea nitrogen (BUN), serum total cholesterol (TC), serum total protein (TP), serum albumin (ALB) and serum globulin(GLOB) from 65 days age onwards. It showed that the basal diet with Diamond V“XP”-yeast culture could decrease the diarrhea rate and increase the growth performance of Tibetan lambs, Diamond V“XP”-yeast culture was a favorable substitute to antibiotics.