《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (9): 2650-2655.doi: 10.16431/j.cnki.1671-7236.2017.09.016

• 动物营养与饲料科学 • 上一篇    下一篇

蛋白肽对生长猪生长性能、养分表观消化率的影响

崔家军1, 张鹤亮1, 张维金2, 张迪1, 李秀花1   

  1. 1. 河北北方学院, 张家口 075000;
    2. 秦皇岛益尔生物科技有限公司, 秦皇岛 066000
  • 收稿日期:2017-03-15 出版日期:2017-09-20 发布日期:2017-09-22
  • 通讯作者: 张鹤亮 E-mail:zhanghl5@hotmail.com
  • 作者简介:崔家军(1988-),男,河北南宫人,硕士生,研究方向:猪营养与饲料,E-mail:cjj3529@126.com
  • 基金资助:

    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)

Effects of Adding Protein Peptide to Diets on Growth Performance and Nutrient Apparent Digestibility of Growing Pigs

CUI Jia-jun1, ZHANG He-liang1, ZHANG Wei-jin2, ZHANG Di1, LI Xiu-hua1   

  1. 1. College of Animal Science, Hebei North University, Zhangjiakou 075000, China;
    2. Qinhuangdao Yier Biological Technology Co., Ltd., Qinhuangdao 066000, China
  • Received:2017-03-15 Online:2017-09-20 Published:2017-09-22

摘要:

试验旨在探讨日粮中添加不同体外胃蛋白酶消化率的蛋白肽(A80、A90)对生长猪生长性能及养分表观消化率的影响。采用单因子随机设计,试验1:选取300头杜洛克猪×长白猪×大白猪三元生长猪,随机分为5组,每组4个重复,每个重复15头。Ⅰ组饲喂基础日粮,Ⅱ~Ⅴ组分别在基础日粮中添加1%、2%、3%、4% A80,试验期30 d。试验2:选取240头杜洛克猪×长白猪×大白猪三元生长猪,随机分为4组,每个组4个重复,每个重复15头。Ⅰ组饲喂基础日粮,Ⅱ~Ⅳ组分别在基础日粮中添加1%、2%、3% A90,试验期30 d。结果显示,试验1:各组间平均日增重、平均日采食量及料重比均无差异显著(P>0.05),但随A80添加量的增加平均日增重有降低的趋势;Ⅱ组干物质、粗蛋白质表观消化率显著高于Ⅰ、Ⅲ、Ⅴ组(P<0.05),但与Ⅳ组差异不显著(P>0.05),随着A80添加量的增多,钙、磷表观消化率有所提高,但没有规律性。试验2:随着日粮中A90添加量的增加,平均日增重先增加后降低。Ⅲ组平均日增重显著高于Ⅰ组(P<0.05),与其他组间差异不显著(P>0.05),Ⅲ组平均日采食量显著高于其他组(P<0.05)。干物质、粗蛋白质表观消化率随着A90添加量的增加有下降的趋势。综上所述,在生长猪日粮中添加A80蛋白肽对生长性能没有改善作用,营养物质消化率均先增高后降低;随着A90蛋白肽添加量的增多,生长猪的生长性能呈二次性提高,最适宜剂量为2%~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

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 Ⅱ to Ⅳ 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 Ⅳ(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%.

Key words: growing pig; pepsin digestibility in vitro; protein peptide; growth performance; nutrients apparent digestibility

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