| Three trials were included in this study to investigate the effect of rough rice or wheat to replace dietary corn and enzyme supplementation on growth performance, blood biochemical parameters and digestibility of weanling piglets.Trial 1: The effect of enzyme supplementation on growth performance, blood biochemical parameters and digestibility of weanling pigletsPiglets weaned at 28 days of age were used to evaluate the effect of supplement of xylanase and mananase to corn-soybean based diet on growth performance, blood biochemical parameters and digestibility of weanling piglets. Forty eight piglets were randomly divided into four dietary treatments; Control as a basal diet (C),C+ antibiotic group, C+ enzyme 0.1% and C+ enzyme 0.15% . Trial lasted 21 days. Results indicated that enzyme supplementation improved growth performance and feed conversion rate of piglets with ADG to be increased by 2.2%~5.3%(p>0.05), F/G decreased by 9.6%~10.8% (p<0.05) and increased serum GLU level 7.7%~25.1% (p<0.01). ileal and caecal apparent digestibilities of DM,CP,NDF,ADF,EAA and NEAA could be increased by2.4%~6.1% (P>0.05) ,13.9%?5.7% (P<0.01) ,16.3%~21.0% (P> 0.05) ,5.8%,4.57%~6.69% (P>0.05) ,6.69%~6.86% (P>0.05) and 6.0%~ 8.7% (P>0.05) ,4.4%?.1% (P>0.05) ,15.6-17.9% (P<0.05) ,26.1%?30.6% (P>0.05) ,2.78%~6.82% (P>0.05) ,2.13%~6.68% (P>0.05), respectively. But it had no effect on levels of serum BUN and TP. Compared with control group and enzyme supplementation (0.15) group, the enzyme supplementation (0.1) group gained better growth performance and dietary digestibility. The diet with antibiotic also increased the growth performance, feed conversion rate, ileal and caecal apparent digestibilities of weanlingpiglets.Trial 2: The effect of rough rice to replace dietary corn on growth performance, blood biochemical parameters and digestibility of weanling piglets.A total of 36 piglets weaned at 28 days of age were randomly divided into three treatments: Control, rice to replace 50% of dietary corn and rice to replace of 70% of dietary corn. Trial lasted 28 days. The results showed that rough rice to replace dietary corn could improved significantly growth performance and feed efficiency with ADG increased by 16.3%, 19.7% and F/G decreased by 4.7%,8.2%(p<0.01),and increased ileal apparent digestibilities of dry matter, crude protein and essential amino acids with 1.6%> 4.7%(P>0.05) ,1.0%> 5.1% (P>0.05) , 4.9%> 7.6% (P>0.05) in weanling piglets,respectively. This replacement had significant effect on the level of serum GLU with the level of serum GLU decreased by 21.3%,30.1%,but no effect on the levels of serum BUN and TP. It also found that E. coli counts in caecum decreased significantly (p<0.05) whereas lactoacilli counts in caecun increased significantly (p<0.05). The counts of E. coli and lactoacilli in ileum had no change.Trial 3: The effect of wheat to replace dietary corn and enzyme supplementation on growth performance, blood biochemical parameters and digestibility of weanling piglets.This trial was designed to determine the effect of wheat to replace dietary corn and enzyme supplementation on growth performance, blood biochemical parameters and digestibility of weanling piglets. A total of 36 piglets weaned at 28 days of age were randomly divided into three treatments: Control, wheat to replace 40% of corn, and wheat to replace 40% of corn with adding enzymes. Trial lasted 28 days. Trial results indicated wheat to replace dietary corn would decreased growth performance and feed conversion rate, and decreased ileal, caecal apparent digestibility of dry matter, crude protein and amino acids of weanling piglets. However, enzyme supplementation of wheat diet could improved significantly growth performance and feed efficiency(p<0.01), andincreased the ileal and caecal apparent digestibility of dry matter, crude protein and amino acids of weanling piglets. It also found that E. coli counts in caecum was decreased significantly (p<0.05) whereas lactoacilli counts in caecun was increas... |
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