研究简报 Short communications

坚木单宁对育肥猪生长性能和猪肉货架期的影响

  • 苏成文 ,
  • 宋之波 ,
  • 徐相亭 ,
  • 陈焱 ,
  • 丁玉娟 ,
  • 郭洪梅 ,
  • 黄加珍
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  • 1. 山东畜牧兽医职业学院, 潍坊 261061;
    2. 浙江尤尼特贸易有限公司, 温州 325017
苏成文(1967-),男,山东昌邑人,教授,硕士,研究方向为猪的营养。E-mail:sdmxsu@163.com

收稿日期: 2019-03-29

  网络出版日期: 2019-10-17

基金资助

山东省现代农业产业技术体系生猪创新团队资助(SDAIT-08-09);潍坊市科技发展计划项目(2018GX044)

Effects of Quebracho Tannin on Growth Performance and Pork Shelf Life of Finishing Pigs

  • SU Chengwen ,
  • SONG Zhibo ,
  • XU Xiangting ,
  • CHEN Yan ,
  • DING Yujuan ,
  • GUO Hongmei ,
  • HUANG Jiazhen
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  • 1. Shandong Vocational Animal Science and Veterinary College, Weifang 261061, China;
    2. Zhejiang Unitan Trading Co., Ltd., Wenzhou 325017, China

Received date: 2019-03-29

  Online published: 2019-10-17

摘要

本试验旨在研究坚木单宁对育肥猪生长性能、粪便微生物变化及猪肉货架期的影响。试验选用75 kg左右的健康"杜×长×大"育肥猪120头,随机分成对照组和试验组,每组6个重复,每个重复10头猪。对照组饲喂基础饲粮,试验组在基础饲粮中添加1 000 mg/kg的坚木单宁。试验期为35 d。结果表明:1)与对照组相比,饲粮添加坚木单宁对育肥猪粪便含水量没有显著影响(P>0.05),但试验组育肥猪粪便中大肠杆菌数量显著低于对照组(P<0.05);2)与对照组相比,试验组育肥猪平均日采食量和平均日增重极显著高于对照组(P<0.01),料重比显著低于对照组(P<0.05);3)试验组猪肉的感官评分、pH和挥发性盐基氮(TVB-N)含量在4℃贮藏的前3 d与对照组相比没有显著差异(P>0.05),5 d后感官评分显著高于对照组(P<0.05),pH和TVB-N含量显著低于对照组(P<0.05),且第9天时pH和TVB-N含量极显著低于对照组(P<0.01);4)猪肉在4℃贮藏过程中,细菌总数呈现对数上升,试验组猪肉在贮藏前5 d与对照组差异不显著(P>0.05),7 d后显著低于对照组(P<0.05)。由此可见,饲粮中添加1 000 mg/kg的坚木单宁能提高育肥猪的生长性能,降低粪便中大肠杆菌数量,延长猪肉的货架期。

本文引用格式

苏成文 , 宋之波 , 徐相亭 , 陈焱 , 丁玉娟 , 郭洪梅 , 黄加珍 . 坚木单宁对育肥猪生长性能和猪肉货架期的影响[J]. 动物营养学报, 2019 , 31(10) : 4834 -4842 . DOI: 10.3969/j.issn.1006-267x.2019.10.049

Abstract

This experiment was conducted to investigate the effects of quebracho tannin on growth performance, fecal microbial changes and pork shelf life of finishing pigs. One hundred and twenty healthy Duroc×Landrace×Yorkshire finishing pigs with an initial average body weight of 75 kg were randomly assigned to 2 groups with 6 replicates per group and 10 pigs per replicate. Pigs in the control group were fed a basal diet, and those in the experimental group were fed the basal diet supplemented with 1 000 mg/kg quebracho tannin. The experiment lasted for 35 days. The results showed as follows:1) compared with the control group, dietary quebracho tannin had no significant effects on fecal moisture content of finishing pigs (P>0.05). The Escherichia coli number in feces of finishing pigs in the experimental group was significantly lower than that in the control group (P<0.05). 2) Compared with the control group, the average daily feed intake and average daily gain of finishing pigs in the experimental group were extremely significantly higher than those in the control group (P<0.01), and the ratio of feed to gain of finishing pigs in the experimental group was significantly decreased compared with the control group (P<0.05). 3) There were no significant differences in the sensory score, pH and total volatile basic nitrogen (TVB-N) content in pork between two groups in the first 3 days when stored at 4℃ (P>0.05), but the sensory score in the experimental group was significantly higher after 5 days (P<0.05), and the pH and TVB-N content in the experimental group were significantly lower than those in the control group compared with the control group (P<0.05). On the 9th day of storage, pH and TVB-N content in the experimental group were extremely significantly lower than those in the control group (P<0.01). 4) When stored at 4℃, the total bacterial count in pork appeared a geometric increase, compared with the control group, the experimental group had no significant difference in the total bacterial count in pork in the first 5 days (P>0.05), but the total bacterial count the experimental group was significantly decreased after 7 days (P<0.05). In conclusion, dietary 1 000 mg/kg quebracho tannin can improve the growth performance, decrease the Escherichia coli number in feces and prolong the pork shelf life of finishing pigs.

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