Study On Effect Of Different Enzyme Preparations In Wheat-based Diet For Growing Pigs By In-vitro And In-vivo

Four enzyme preparations (E1 E2 OT Xylanase) were evaluated by in vitro evaluation and animal feeding trial using wheat-type diets.In experiment 1 : The enzymatic hydrolysis capability of different enzymepreparations were evaluated in vitro by simulating the digestive tract environment of pigs.The result showed that reducing sugar released by El was the least and that released byOT was the most. The increasing sequence of the reducing sugar wasE11 treatment in whole trail (P>0.05). Other enzymes can increase the ADG significantly(P<0.05) and OT treatment (P<0.01) had higher ADG than the control treatment. Adding enzymes to wheat-based diet can significantly decrease the F/G in whole trail(P<0.05), and significantly decrease the diarrhea ratio from 4 to 8 week and the whole trial (P<0.05). E2 OT Xylanase treatment get to positively significant level(P<0.01). Compared with wheat-based diet, enzymes had no significant effect on apparent feces digestibility of CP and Energy for growing pigs (P>0.05). Enzymes supplementation had the tendacy to improve the apparent ideal digestibility of energy (P=0.10). E2, OT, Xylanase can significant improve the apparent ileal digestibility of CP(P<0.05). But there...