摘要
试验旨在研究大麦-DDGS日粮中添加非淀粉多糖酶对肉鸡生长性能的影响。选用960只一日龄的AA肉鸡随机分成8组，每组6个重复，每个重复20只鸡。第1组为正对照，饲喂常规能量日粮；第5组为负对照，饲喂低能量（低250．8kJ）日粮。2～4与6～8试验组分别在正对照组与负对照组的基础上添加100、200、300g／t3个水平梯度的非淀粉多糖酶。结果显示：1～21d，低能试验组T8的日采食量（ADFI）显著低于负对照组T5（P〈0．05）；22～42d，常规试验组T4的日采食量（ADFI）和料重比（F／G）均显著低于对照组T1（P〈0．05）；生长全期，常规试验组T4的日采食量（ADFI）显著低于对照组T1（P〈0．05），低能试验组T8的日采食量（ADFI）显著低于负对照组T5（P〈0．05）。酶制剂水平在300g／t时，对生产性能改善效果最好。研究表明分别在常规和低能（低250．8kJ）大麦-DDGS日粮中添加复合非淀粉多糖酶能够不同程度提高肉鸡生产性能，在酶制剂添加300g／t水平时效果最佳。
Abstract：The objective of this experiment was to assess the effect of non-starch polysaccharide （NSP） enzymes in a barley-DDGS diet on the growth performance of broiler. Nine hundred and sixty l-day- old healthy AA broilers were randomly divided into 8 treatments with 6 replications （20×6×8=brids×replications Xtreatments）. The group 1 was fed a regular energy diet as positive control group; the group 5 fed an energy-restricted diet that 250.8 kJ energy less than the conventional di- et as a negative contrast group, the group of 2-4 added 100, 200, 300 g/t of non-starch polysaccharide enzymes on the basis of positive control group, and the group of 6-8 added that on the basis of negative contrast group. The resuhs showed as follows： ①In 1-21 d, ADFI of the group 8 was significantly lower than the negative contrast group 5（P〈0.05）; In 22~42 d, the ADFI and F/G of the group 4 were significantly lower than that of the positive control group I（P〈O.05）; In 1-42 d, the ADFI of group 4 was significantly lower than that of group l（P〈0.05） and that of group 8 was significantly lower than group 5（P〈0.05）. The optimal supplementation of NSP enzymes in a barley-DDGS diet for broilers was 300 g/t on the performance improvement. The current study suggested that the NSP enzymes significantly improved the performance of broiler respectively in conventional and low energy（low 250.8 k J） barley-DDGS diet, and the optimal supplementation of NSP enzymes was 300 g/t in the condition of this experiment.
出处
《饲料工业》
北大核心
2016年第8期61-64,共4页
Feed Industry
