米糠高纤维日粮对苏淮猪生长性能及肠道功能的影响

[目的]本试验旨在研究米糠替代部分玉米形成的高纤维日粮对我国培育新品种苏淮猪生长性能、小肠形态、肠道发育及微生物区系的影响。[方法]试验选取160日龄左右、体质量相近的纯种苏淮猪24头,随机分为2组,分别饲喂粗纤维含量为4.7%的玉米-豆粕型基础日粮和粗纤维含量为7.5%的米糠替代部分玉米的高纤维日粮,试验期75 d。分别于试验第0、14、28和75天采集粪样,用于测定羧甲基纤维素酶活性和微生物数量。试验结束屠宰全部试验猪,测量胃肠道相对质量和相对长度,并采集小肠组织样,用于形态学观察。[结果]与对照组相比,米糠组平均上午采食量和日均采食量极显著下降（P〈0.01）,平均日增重与料重比无显著变...

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Published in南京农业大学学报 Vol. 39; no. 5; pp. 807 - 813
Main Author 张叶秋 郝帅帅 高硕 吴艳 李强 李平华 黄瑞华
Format Journal Article
LanguageChinese
Published 2016
Subjects
小肠形态
生长性能
米糠
纤维
肠道发育
肠道微生物
苏淮猪
Online AccessGet full text
ISSN1000-2030

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Summary:[目的]本试验旨在研究米糠替代部分玉米形成的高纤维日粮对我国培育新品种苏淮猪生长性能、小肠形态、肠道发育及微生物区系的影响。[方法]试验选取160日龄左右、体质量相近的纯种苏淮猪24头,随机分为2组,分别饲喂粗纤维含量为4.7%的玉米-豆粕型基础日粮和粗纤维含量为7.5%的米糠替代部分玉米的高纤维日粮,试验期75 d。分别于试验第0、14、28和75天采集粪样,用于测定羧甲基纤维素酶活性和微生物数量。试验结束屠宰全部试验猪,测量胃肠道相对质量和相对长度,并采集小肠组织样,用于形态学观察。[结果]与对照组相比,米糠组平均上午采食量和日均采食量极显著下降（P〈0.01）,平均日增重与料重比无显著变化（P〉0.05）。试验第14天,米糠组羧甲基纤维素酶活性极显著升高（P〈0.01）,黄色瘤胃球菌数量增加（P〈0.05）;乳酸杆菌和双歧杆菌数量在试验第28天均显著增加（P〈0.05）;柔嫩梭菌数量在试验结束时显著升高（P〈0.05）,而白色瘤胃球菌在整个试验期均无显著变化（P〉0.05）。饲喂米糠增加了大肠占整个肠道质量的比例（P〈0.01）,同时促进了十二指肠和空肠绒毛生长（P〈0.01）,加深了空肠隐窝深度（P〈0.05）。[结论]添加34.8%米糠的高纤维日粮不影响苏淮猪（50-90 kg）生长,并能促进小肠绒毛生长,优化大肠微生物区系。
Bibliography:[Objectives]The study was conducted to examine the effects of replacing partial corn with rice bran on growth performance,intestinal morphology,intestinal development and gut microbiota of Chinese new breed Suhuai pigs. [Methods]Twenty-four 160 day-old healthy Suhuai pigs with similar body weight were randomly allocated into 2 groups to receive basal corn-soybean diet containing 4.7%fibre and high fibrerice bran diet containing 7. 5% fibre for 75 days,respectively. We collected feces on 0,14,28 and 75 days for caboxymethyl cellulose（ CMC） and microbiota analysis. At the end of trial,all pigs were slaughtered and relative weight and length of gastrointestinal tract（ GIT） were measured,and small intestine tissues were collected for morphologic observation. [Results]Average feed intake in the morning and average daily feed intake significantly decreased when pigs was fed with rice bran diets,and no significant difference was observed with average daily gain and feed to gain ratio（ P〉0. 05）. On 14 days of trial,r
ISSN:1000-2030