动物营养学报 >

2019 , Vol. 31 >Issue 2: 713 - 720

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.02.028

反刍与草食动物营养 Ruminant and herbivore nutrition

酸化剂和血浆蛋白粉对哺乳仔兔生长性能、胃肠道pH、胃蛋白酶活性及肠黏膜形态的影响

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  • 1. 西南大学动物科技学院, 重庆 400715;
    2. 四川省畜牧科学研究院, 成都 610066
王庆争(1993-),男,山东德州人,硕士研究生,从事动物营养与饲料研究。E-mail:496356712@qq.com

收稿日期: 2018-07-13

  网络出版日期: 2019-02-18

基金资助

国家兔产业技术体系（CARS-43-D-3）；公益性行业（农业）科研专项经费（201303143）；家兔现代产业链关键技术集成研究与产业化示范（2016NZ0002）

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Effects of Acidifiers and Spray-Dried Plasma Protein on Growth Performance, Gastrointestinal pH, Pepsin Activity and Intestinal Mucosal Morphology of Suckling Rabbits

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  • 1. College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
    2. Sichuan Animal Science Academy, Chengdu 610066, China

Received date: 2018-07-13

  Online published: 2019-02-18

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摘要

本试验旨在研究饲粮中添加酸化剂和血浆蛋白粉对哺乳仔兔生长性能、胃肠道pH、胃蛋白酶活性及肠黏膜形态的影响。试验选取同期配种和产仔的新西兰经产母兔120窝，随机分为4组，每组5个重复，每个重复6窝，分别饲喂基础饲粮（A组，对照组）、基础饲粮+0.1%酸化剂（B组）、基础饲粮+0.3%血浆蛋白粉（C组）、基础饲粮+0.1%酸化剂+0.3%血浆蛋白粉（D组）。哺乳仔兔在18日龄开始补饲，饲养试验持续到35日龄断奶。结果表明：与对照组相比，C、D组28、35日龄仔兔的个体均重显著提高（P<0.05），分别提高了10.53%、11.70%和16.07%、18.66%；B、D组28、35日龄仔兔的胃和十二指肠pH显著降低（P<0.05）；D组28、35日龄仔兔的胃蛋白酶活性显著提高（P<0.05），B组35日龄仔兔胃蛋白酶的活性也显著提高（P<0.05）；C、D组28、35日龄仔兔的十二指肠、空肠和回肠的绒毛高度显著增加（P<0.05），隐窝深度显著降低（P<0.05）。综上所述，饲粮中添加0.1%酸化剂或0.3%血浆蛋白粉均能改善哺乳仔兔的生长性能，且酸化剂和血浆蛋白粉同时添加效果更佳。

关键词： 酸化剂; 血浆蛋白粉; 哺乳仔兔; 生长性能; 胃蛋白酶活性; 肠黏膜形态

本文引用格式

王庆争, 郭志强, 谢晓红, 雷岷, 任永军, 李丛艳, 李周权 . 酸化剂和血浆蛋白粉对哺乳仔兔生长性能、胃肠道pH、胃蛋白酶活性及肠黏膜形态的影响[J]. 动物营养学报, 2019 , 31(2) : 713 -720 . DOI: 10.3969/j.issn.1006-267x.2019.02.028

Abstract

The aim of this study was to investigate the effects of acidifiers and spray-dried plasma protein on growth performance, gastrointestinal pH, pepsin activity and intestinal mucosal morphology of suckling rabbits. A total of 120 nests of rabbits, mating and farrowing in the same period, were randomly divided into 4 groups. Each group had 5 replicates with 6 nests per replicate. During the experimental period, the rabbits in 4 groups were fed a basal diet (A group, control group), the basal diet with 0.1% acidifiers (B group), the basal diet with 0.3% spray-dried plasma (C group), the basal diet with 0.1% acidifiers and 0.3% spray-dried plasma (D group), respectively. The supplementary feeding began on 18 days of age until weaning at 35 days of age. The results showed that compared with the control group, the average body weight of rabbits on 28, 35 days of age in groups C and group D were significantly increased by 10.53%, 11.70% and 16.07%, 18.66%, respectively (P<0.05); the pH of stomach and duodenum on 28 and 35 days of age in groups B and group D were significantly decreased (P<0.05); the villus height of duodenum, jejunum and ileum on 28 and 35 days of age in groups C and D were significantly increased (P<0.05), and the crypt depth were significantly decreased (P<0.05); the pepsin activity in group D was significantly improved on 28 days of age (P<0.05), and on 28, 35 days of age, that in groups B and D were significantly improved (P<0.05). It is indicated that 0.1% acidifiers and 0.3% spray-dried plasma protein supplementation can both effectively improve the growth performance of suckling rabbits, and it's more effective when the diets have both of them.

Key words： acidifiers; spray-dried plasma; suckling rabbits; growth performance; intestinal mucosal morphology; pepsin activity

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