›› 2011, Vol. 38 ›› Issue (12): 5-8.

• 动物营养与饲料科学 •    下一篇

不同处理大豆蛋白粉对犊牛消化酶活性及小肠发育的影响

高艳霞1,2, 王加启1, 叶纪梅1,3, 卜登攀1, 魏宏阳1, 周凌云1, 张祥1,3, 赵国琦3, 王治国1   

  1. 1. 中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京 100193;2. 河北农业大学动物科技学院,河北保定 071001;3. 扬州大学动物科学与技术学院,江苏扬州 225009
  • 收稿日期:2011-09-26 修回日期:1900-01-01 出版日期:2011-12-20 发布日期:2011-12-20
  • 通讯作者: 王加启

Effects of Different Processing Soy Protein on Digestive Enzyme Activities and Small Intestine Development of Calves

GAO Yan-xia1,2, WANG Jia-qi1, YE Ji-mei1,3, BU Deng-pan1, WEI Hong-yang1, ZHOU Ling-yun1, ZHANG Xiang1,3, ZHAO Guo-qi3, WANG Zhi-guo1   

  1. 1. State Key Laboratory of Animal Nutrition,Institute of Animal Sciences,Chinese Academy of Agricultural Sciences, Beijing 100193,China;2. College of Animal Science and Technology,Agricultural University of Hebei,Baoding 071001,China;3. College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China
  • Received:2011-09-26 Revised:1900-01-01 Online:2011-12-20 Published:2011-12-20

摘要： 本试验旨在研究饲喂含有不同加工处理大豆蛋白的代乳粉对犊牛消化道结构和消化酶活性的影响。试验选用新生公犊牛18只,随机分为3组,每组6只,分别饲喂含有全脂大豆粉(A组)、脱脂大豆粉(B组)或膨化大豆粉(C组)的代乳粉, 预饲期7 d, 试验期42 d。结果表明,代乳粉中不同加工处理的大豆蛋白对犊牛肠道消化酶活性和小肠形态结构具有显著的影响。与膨化大豆粉组和全脂大豆粉犊牛相比,B组犊牛小肠食糜中胰蛋白酶活性和糜蛋白酶活性最低。各组绒毛高度在空肠近端无显著差异,在小肠其它各段,A组和C组都显著高于B组(P<0.05)。各组犊牛十二指肠和空肠近端隐窝深度无显著差异(P>0.05)。A组和C组的小肠绒毛高度与隐窝深度比值均显著高于B组(P<0.05)。十二指肠和空肠近端、中部的黏膜厚度接近(P>0.05),但在空肠远端A组与C组无显著差异(P>0.05),显著高于B组(P<0.05)。综上所述,加热全脂大豆蛋白粉和膨化大豆蛋白粉能够作为蛋白质来源在代乳粉中添加。

关键词: 犊牛; 代乳粉; 蛋白质; 消化酶

Abstract: To determine the effects of milk replacer with different processed soy protein on the activities of digestive enzyme and the development of small intestine, 18 new-born calves were divided into three groups each with 6 duplicates, calves in group A, B and C were fed milk replacers contained heated full-fat soybean flour, defatted soybean flour or extruded soybean flour, seperatelly. The experiment was conducted for a 7 d adaptation period and a 42 d treatment period. The results showed that milk repalcer with different processed soy protein could affect the digestive enzyme activities and intestinal morphology. Compared to that of group A and C, the activities of trypsin and chymotrypsin were lowest in group B. Villus heigh was similar among groups in the proximal jejunum(P>0.05),but it were higher for group A and C than group B in other site of small intestine. Recess depth was similar among groups in the duodenum and the proximal jejunum(P>0.05). the ratio of villus height to recess depth were higher in group A and C that that of group B(P<0.05).there was no difference of mucosa thickness among groups in the duodenum and proximal , middle jejunum(P>0.05),but in the far-end of jejunum, it was higher in group A and C than group B (P<0.05).Therefore, full-fat soybean flour and extruded soybean flour could be used in milk replacer of calves.

Key words: calf; milk replacer; protein; digestive enzyme

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