Effect Of Diets And Non-starch Polysaccharide Enzyme Supplementation On Digestibility And Piglet Performance

The purpose of this study was to evaluate the effect of diets and non-starch polysaccharide(NSP) enzyme supplementation on digestibility and piglet performance for 8 weeks. In this experiment one hundred twenty crossed (Duroc ?Landrace?Large White) piglets were weaned at 28? days. Piglets were allotted randomly on the basis of sex (male piglets are half of the total) and litter to six dietary treatments in a factor design. There were six replicate pens per treatment, two to four piglets per pen. Diets including: full vegetal diet (A|), A|+NSP enzyme, vegetal - fish meal diet (A2), A2 + NSP enzyme, vegetal - fish meal - milk products diet (A3), and A3+ NSP enzyme. The digestive trial is conducted in the third-week, and all the excretion of feces is collected. The results are showed as follows.l.For the overall period, ADFI and ADG were significantly affected by the protein composition of diets(p<0.05), but feed/gain was not affected(p>0.05).Weaning piglets fed A? exhibited the highest ADFI and ADG, which increased by 8.81% and 11.8% than that of A,, respectively. Performance of weaned piglets tended to increase with NSP enzyme supplementation p >0.05).2.Effect of animal protein respond in formula feed on the growth of early-weaning piglets decreased with increasing time postweaning. For the first 5 wk after weaning, the growth respond of animal protein was best, per gram aminlal protein was equivalent to 1.20 gram vegetal protein in ADG, per unit of it improved ADG was higher than vegetal protein by 20.02%.3. Digestibilities of DM, CP, GE, NDF, ADF and heimcellulose were not affected by diets(p>0.05). diets supplementation with NSP enzyme improved apparently the digestibilities of NDF, ADF and hemicellulose. AI addition of NSP enzyme showed the highest improvement of DM, GE and CP digestibilities, but diet with higher- quality protein(fish meal and milk products) addition of NSP enzyme showed a little.4.The higher of dietary protein was, the lower of piglet diarrhea rate was. Diarrhea rate of Weaning piglets fed A3lowest significantly than that of At by 21.96%(p<0.01), and A2 was not significant compared with A| or A3(p>0.05). Diet containing lower-quality protein supplementation NSP enzyme was significant in reducing diarrhea rate, and diarrhea rate of piglets fed A, with the NSP enzyme reduced 27.61 %(p<0.01).