复合酶制剂对断奶獭兔生长性能与营养物质表观消化率的影响

以60只35日龄断奶獭兔为试验动物,分为对照组和试验Ⅰ组、试验Ⅱ组、试验Ⅲ组3个试验组,每组设3个重复,每重复5只獭兔,研究日粮中添加2、4、6g/kg 3个水平复合酶制剂对其生长性能和营养物质表观消化率的影响。结果表明,3个试验组的平均日增量分别比对照组提高10.65%(P<0.05)、14.49%(P<0.01)、12.39%(P<0.01);料重比分别比对照组降低11.26%(P<0.01)、15.47%(P<0.01)、13.36%(P<0.01);腹泻率分别比对照组降低53.31%(P<0.05)、70.79%(P<0.01)、62.55%(P<0.01),以试验Ⅱ组效果最好。试验组营养物质表观消化率均高于对照组,其中试验组粗蛋白表观消化率分别比对照组提高11.86%(P>0.05)、22.73%(P<0.05)、18.10%(P<0.05);试验组粗纤维表观消化率分别比对照组提高14.53%(P<0.05)、23.00%(P<0.01)、22.15%(P<0.01),以试验Ⅱ组效果最好;试验组粗脂肪表观消化率分别比对照组提高3.5%(P>0.05)、8.68%(P<0.05)、9.36%(P<0.05),以试验Ⅲ组效果最好;试验组其他干物质、粗灰分、钙、磷表观消化率高于对照组,但差异不显著。因此认为,添加4g/kg水平复合酶制剂对提高断奶獭兔生长性能、营养物质表观消化率,降低腹泻率效果最佳。

Effect of Multi enzyme Preparation on Growth Performance and Nutrient Apparent Digestibility of Weaned Rex Rabbit

Sixty Rex rabbits with age of 35 days were randomly divided into four groups with three replicates in each group to study the effect of multi-enzyme preparation level(0,2,4 and 6 g/kg,named control,group Ⅰ,group Ⅱ,group Ⅲ respectively) on their growth performances and nutrient apparent digestibility.Results showed that average daily gains in three treatment groups were 10.65%(P<0.05),14.49%(P<0.01),and 12.39%(P<0.01)higher than in control group respectively.Feed conversions in three treatment groups were 11.26%(P<0.01),15.47%(P<0.01) and 13.36%(P<0.01)lower than in control group respectively.Diarrhea incidences in three treatment groups were 53.31%(P<0.05),70.79%(P<0.01) and 62.55%(P<0.01)lower than in control group respectively.4 g/kg level was better.Nutrient apparent digestibility in three treatment groups was all higher than in control group.Nutrient apparent digestibility of crude protein in three treatment groups were 11.86%(P>0.05),22.73%(P<0.05) and 18.10%(P<0.05)higher than in control group respectively.Nutrient apparent digestibility of crude fiber in three treatment groups were 14.53%(P<0.05),23.00%(P<0.01) and 22.15%(P<0.01)higher than in control group respectively and the 4g/kg level was better.The nutrient apparent digestibility of crude fat in 3 treatment groups were 3.5%(P>0.05),8.68%(P<0.05) and 9.36%(P<0.05)higher than in control group respectively.Nutrient apparent digestibility of dry matter,crude ash,Ca and P in treatment groups were higher than in control group but the differences were not significant(P>0.05).So we concluded that 4 g/kg level was better than other levels.