动物营养学报 >

2021 , Vol. 33 >Issue 3: 1339 - 1348

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.03.017

猪营养与饲料 SWINE NUTRITION AND FEED

苯甲酸对断奶仔猪生长性能、腹泻率和肠道菌群的影响

  • 温晓鹿 ,
  • 郑春田 ,
  • 杨雪芬 ,
  • 蒋宗勇 ,
  • 高开国 ,
  • 张洁 ,
  • 王丽
展开
  • 1. 广东省农业科学院动物科学研究所, 畜禽育种国家重点实验室, 农业农村部华南动物营养与饲料重点实验室, 广东省畜禽育种与营养研究重点实验室, 广州 510640;
    2. 清远市龙发种猪有限公司, 广东省种猪育种工程技术研究中心, 清远 513058
温晓鹿(1986-),男,河北衡水人,助理研究员,硕士,研究方向为猪营养与饲料。E-mail:wenxiaolu@gdaas.cn

收稿日期: 2020-07-27

  网络出版日期: 2021-03-18

基金资助

国家十三五重点研发专项（2018YFD0501100）；广东省现代农业产业技术体系生猪创新团队项目（2019KJ126）；现代农业产业技术体系建设专项（CARS-35）；清远市科技计划项目（2019A031）

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Effects of Benzoic Acid on Growth Performance, Diarrhea Rate and Intestinal Flora of Weaned Piglets

  • WEN Xiaolu ,
  • ZHENG Chuntian ,
  • YANG Xuefen ,
  • JIANG Zongyong ,
  • GAO Kaiguo ,
  • ZHANG Jie ,
  • WANG Li
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  • 1. State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Guangdong Engineering Technology Rresearch Center of Pig Breeding, Qingyuan Longfa Pig Breeding Co., Ltd., Qingyuan 513058, China

Received date: 2020-07-27

  Online published: 2021-03-18

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摘要

本试验旨在研究饲粮中添加苯甲酸对断奶仔猪生长性能、腹泻率及肠道菌群的影响。试验选取21日龄"杜×长×大"断奶仔猪72头，随机分为对照组（基础饲粮）和苯甲酸组（基础饲粮+5 000 mg/kg苯甲酸），每组6个重复，每个重复6头猪（公母各占1/2）。试验期42 d，分为3个阶段：第1~14天、第15~28天、第29~42天。结果表明：与对照组相比，饲粮中添加5 000 mg/kg的苯甲酸，1）显著提高仔猪第15天的体重（P<0.05），显著提高仔猪断奶后第1~14天平均日增重（P<0.05），显著降低仔猪断奶后第29~42天、第1~42天的料重比（P<0.05）；2）显著降低仔猪断奶后第1~14天、第15~28天、第29~42天以及第1~42天的腹泻率和粪便评分（P<0.05）；3）显著降低仔猪断奶后第14天回肠、盲肠、结肠芽孢杆菌的数量（P<0.05），显著降低仔猪断奶后第42天盲肠芽孢杆菌的数量（P<0.05）；显著降低仔猪断奶后第14天结肠、第42天盲肠和结肠总细菌的数量（P<0.05）；显著提高仔猪断奶后第42天回肠乳酸杆菌的数量（P<0.05），有增加仔猪断奶后第14天回肠乳酸杆菌数量的趋势（P=0.083），有降低仔猪断奶后第42天结肠大肠杆菌数量的趋势（P=0.065）。结果提示，在本试验条件下，断奶仔猪饲粮中添加苯甲酸可显著降低仔猪的腹泻率和粪便评分，抑制肠道细菌生长，提高仔猪的生长性能。

关键词： 苯甲酸; 仔猪; 生长性能; 腹泻率; 肠道微生态

本文引用格式

温晓鹿 , 郑春田 , 杨雪芬 , 蒋宗勇 , 高开国 , 张洁 , 王丽 . 苯甲酸对断奶仔猪生长性能、腹泻率和肠道菌群的影响[J]. 动物营养学报, 2021 , 33(3) : 1339 -1348 . DOI: 10.3969/j.issn.1006-267x.2021.03.017

Abstract

The objective of this study was to investigate the effects of dietary benzoic acid on growth performance, diarrhea rate and intestinal flora of weaned piglets. A total of 72 Duroc×Landrace×Yorkshire weaned piglets at aged of 21 days were allotted to control group and benzoic acid group according to body weight with 6 replicates, and 6 pigs (3 barrows and 3 gilts) per replicate. The experiment lasted for 42 days, which was divided into three stages: days 1 to 14, days 15 to 28 and days 29 to 42. The control group were fed a basal diet, while benzoic acid group were fed the basal diet supplemented with 5 000 mg/kg benzoic acid. The results showed that compared with control group, 1) dietary supplementation of 5 000 mg/kg benzoic acid significantly increased the body weight of piglets on day 14 (P<0.05), the average daily gain from days 1 to 14 was significantly increased (P<0.05), and the feed to gain ratio of piglets from days 29 to 42 and days 1 to 42 after weaning was significantly decreased (P<0.05); 2) diarrhea rate and fecal score of piglets from days 1 to 14, days 15 to 28, days 29 to 42 and days 1 to 42 after weaning were significantly decreased (P<0.05); 3) the number of Bacillus in ileum, cecum and colon were significantly reduced on day 14 (P<0.05), the number of Bacillus in cecum was significantly reduced on day 42 (P<0.05), the number of total bacteria in colon, cecum and colon was significantly reduced on day 14 (P<0.05), and the number of Lactobacillus in ileum was significantly increased on day 42 (P<0.05). There was a tendency to increase the number of Lactobacillus in ileum on day 14 (P=0.083), and to decrease the number of E.coli in colon on day 42 (P=0.065). In conclusion, dietary supplemented 5 000 mg/kg benzoic acid significantly reduce the diarrhea rate and fecal score of piglets, inhibit the growth of intestinal bacteria, and improve the growth performance of piglets.

Key words： benzoic acid; piglets; growth performance; diarrhea rate; intestinal microecology

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