NSP复合酶在肉鸭日粮中的应用

Application of Non-starch Polysaccharides Enzymes Preparation in Ducklings Diet

选用 1 日龄樱桃谷肉鸭苗 810 羽,采用 2×3 试验设计方法,研究日粮的谷物组成和 NSP 复合酶的添加对肉鸭生产性能、营养物质代谢和屠宰性能的影响.结果表明,1)日粮中谷物组成和 NSP 复合酶对肉鸭的生产性能、营养物质代谢率和屠宰性能均有显著影响,日粮中添加一定比例的小麦能降低肉鸭的日增重和营养物质代谢率,提高料重比和腿肌率,日粮中添加 NSP 复合酶能提高肉鸭的日增重、营养物质代谢率与屠宰率、胸肌率和腿肌率,降低料重比,提高经济效益;2)谷物组成和 NSP 复合酶的交互作用只对所测指标中的日粮蛋白质的表观代谢率产生显著影响;3)日粮中小麦占谷物组成的比例以 47%较为适宜,NSP 复合酶的适宜添加水平为 0.05%.

one-day-old cherry valley ducklings were randomly divided into 9 treatment groups (3 duplicates,30 ducklings per duplicate) to investigate the effect of cereal grain composition (3 levels were 100% corn,53% corn and 47% wheat,11% corn and 89% wheat respectively) and NSP enzymes supplementation (with 3 levels of 0,0.025%, 0.05% in 2×3 factorial design) on nutrient metabolibility,performance and dressing performance in ducklings.The results showed that:1) The cereal composition in ducklings diet affected performance and nutrient metabolibility(p<0.05)and thigh muscle ratio in dressing performance significantly(p<0.05).Supplementation of NSP enzymes preparation in ducklings diet improved significantly performance,nutrient metabolibility,dressing percentage,breastment ratio and thigh muscle ratio in dressing performance respectively(p<0.05),and at the same time economic efficiency was improved significantly also.2) Interaction between cereal composition and NSP enzymes supplementation has an obvious effect on CP apparent metabolibility of ducklings (p<0.05).3) Based on the above results,it is suggested that the optimum wheat included in ducklings diet should be about 47% of the cereal grain composition and the optimum enzyme preparation supplemented should be 0.05%.