小麦加NSP酶完全替代玉米对生长猪饲养效果研究

Study on the effect of using wheat supplemented with NSP enzyme instead of corn in the diet of growing pigs

研究在生长猪日粮中用小麦加NSP酶完全代替玉米的可行性及酶制剂的最佳用量。试验选取30 kg左右的杜×长×大三元杂交猪120头,随机分成4组,每组3个重复,每个重复10头猪,对照组饲喂玉米型基础日粮,试验Ⅰ组、Ⅱ组、Ⅲ组分别在小麦型日粮中加入0.02%、0.04%、0.06%NSP酶,预试期7 d,正试期30 d。结果显示,以试验Ⅱ组效果最好,与对照组相比,日增重提高3.25%、料重比降低1.59%,但差异均不显著;饲料中能量(E)、干物质(DM)、粗蛋白质(CP)、粗脂肪(CE)的消化率分别提高1.12%、1.89%、1.15%、1.85%,粗纤维(CF)消化率显著提高17.57%,表明用小麦加0.04%NSP酶完全代替生长猪日粮中的玉米能提高养分消化率和生产性能。

The experiment was to study the feasibility of using wheat supplemented with NSP enzyme instead of corn and the optimal quantity of enzyme in the diet of growing pigs. 120 pigs （Duroc xLandracexYorkshire） with about 30 kg body weight were randomly assigned into 4 groups, 3 replications each group, 10 pigs each replication. The control group was fed corn-basic diet. Group Ⅰ , Ⅱ and Ⅲas trial groups were fed wheat-based diet with 0.02%, 0.04%, 0.06% NSP enzyme respectively. The period of trial was 30d with 7d of pretrial. The results showed that the trial group Ⅱ was best one. Compared with the control group, the average daily gain increased by 3.25%,feed gain ratio decreasing by 1.59%（P〉0.05）. The digestibility of E, DM, CP, CE, CF increased by 1.12%, 1.89%, 1.15%, 1.85% （P〉0.05）, 17.57%（P〈0.05）. Conclusion： using wheat with 0.04% NSP enzyme instead of corn could improve performance and dietary nutrient digestibility in growing pigs.