中国畜牧兽医2017，Vol.44Issue(9)：2650-2655,6.DOI:10.16431/j.cnki.1671-7236.2017.09.016
蛋白肽对生长猪生长性能、养分表观消化率的影响
Effects of Adding Protein Peptide to Diets on Growth Performance and Nutrient Apparent Digestibility of Growing Pigs
摘要
Abstract
The experiment was aimed to study the effects of protein peptide with different pepsin digestibility in vitro (A80,A90) on growth performance,nutrient apparent digestibility of growing pigs.Experiment 1:300 growing pigs of Duroc pig × Landrace pig × Yorkshire pig were selected and randomly divided into 5 groups with 4 repeats pre group and 15 pigs per repeat.The pig of group Ⅰ was fed with basal diet,that of groups Ⅱ to Ⅴ were fed with basal diet with 1％,2 ％,3％,4％ A80 supplement,respectively.The experiment period lasted for 30 d.Experiment 2:240 growing pigs of Duroc pig × Landrace pig × Yorkshire pig were selected and randomly divided into 4 groups with 4 repeats pre group and 15 pigs per repeat.The pig of group Ⅰ was fed with basal diet,that of groups lⅡ to ⅣV were fed with basal diet with 1％,2％,3％ A90 supplement,respectively.The experiment period lasted for 30 d.The results showed that the average daily gain (ADG),average daily feed intake (ADFI) and feed/gain (F/G) had no significant difference among all groups (P＞0.05) in experiment 1.But the ADG had a tendency to reduce with the increase of A80.The DM,CP apparent digestibility of group Ⅱ was significant higher than that of groups Ⅰ,Ⅲ and V (P＜0.05),and had no significant difference with group ⅣV (P＞0.05).Digestibility of Ca and P showed a tendency to improve with the increase of A80,but there was no regularity.Experiment 2:With the increase does of A90,ADG was increased firstly and then decreased.The ADG of group Ⅲ was significantly higher than that of group Ⅰ (P＜0.05),and had no significant difference with other groups (P＞0.05).The ADFI of group Ⅲ was significantly higher than that of other groups (P＜0.05).DM and CP apparent digestibility showed a tendency to decline with the increase dose of A90.In conclusion,A80 had no significant improvement on growth performance and A90 showed a quadratic improvement to pig's growth performance and the best addition percentage of protein hydrolysate in diet was 2％ to 3％.关键词
生长猪/胃蛋白酶体外消化率/蛋白肽/生长性能/养分表观消化率Key words
growing pig/pepsin digestibility in vitro/protein peptide/growth performance/nutrients apparent digestibility分类
农业科技引用本文复制引用
崔家军,张鹤亮,张维金,张迪,李秀花..蛋白肽对生长猪生长性能、养分表观消化率的影响[J].中国畜牧兽医,2017,44(9):2650-2655,6.基金项目
河北省科技厅重点研发计划项目:“动物源性活性赤金蛋白肽”在生猪养殖中的应用技术研究(16226601D) （16226601D）
