反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

饲粮直链/支链淀粉比例对断奶羔羊瘤胃发酵及细菌菌群的影响

  • 尹梦洁 ,
  • 汪水平 ,
  • 冉涛 ,
  • 陈凯 ,
  • 杨大盛 ,
  • 刘勇 ,
  • 汤少勋 ,
  • 黄棋 ,
  • 张永康 ,
  • 谭支良
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  • 1. 中国科学院亚热带农业生态研究所, 动物营养生理与代谢过程湖南省重点实验室, 畜禽养殖污染控制与资源化技术国家工程实验室, 亚热带农业生态过程重点实验室, 长沙 410125;
    2. 西南大学动物科学技术学院, 重庆 402460
尹梦洁(1996-),女,湖南湘潭人,硕士研究生,动物营养与饲料科学专业。E-mail:540139531@qq.com

收稿日期: 2021-02-24

  网络出版日期: 2021-09-18

基金资助

国家自然科学基金项目(31702139);湖南省创新型省份建设项目(2019RS3021);四川省科技计划项目(2019YFN0080);四川省政府采购项目(5133312019000129)

Effects of Dietary Amylose/Amylopectin Ratio on Rumen Fermentation and Bacterial Community in Weaned Lambs

  • YIN Mengjie ,
  • WANG Shuiping ,
  • RAN Tao ,
  • CHEN Kai ,
  • YANG Dasheng ,
  • LIU Yong ,
  • TANG Shaoxun ,
  • HUANG Qi ,
  • ZHANG Yongkang ,
  • TAN Zhiliang
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  • 1. Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutrition Physiology and Metabolism, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
    2. College of Animal Science and Technology, Southwest University, Chongqing 402460, China

Received date: 2021-02-24

  Online published: 2021-09-18

摘要

本试验旨在研究饲粮不同直链/支链淀粉比例对断奶羔羊瘤胃细菌、瘤胃发酵及其上皮乳头形态特征等的影响,为羔羊饲粮配制提供数据支持。试验采用单因子随机区组设计,选取27只体重相近的健康湘东黑山羊断奶羔羊,随机分为3组(每组9头),分别饲喂直链/支链淀粉比例为0.263、0.611及1.833的试验饲粮。试验期共35 d,其中预试期7 d,正试期28 d。结果表明:除瘤胃液中性木聚糖酶活性、瘤胃上皮乳头宽度及瘤胃固相内容物栖瘤胃普雷沃氏菌的数量外,瘤胃液其他酶活性、瘤胃上皮乳头高度与表面积、瘤胃发酵特性及瘤胃内容物细菌组成不受饲粮直链/支链淀粉比例的影响(P>0.05)。当饲粮直链/支链淀粉比例提高至1.833时可显著提高断奶羔羊瘤胃液中性木聚糖酶活性(P=0.009)及瘤胃上皮乳头宽度(P=0.010),显著降低瘤胃固相内容物栖瘤胃普雷沃氏菌的数量(P=0.010)。结果提示,适当提高饲粮直链/支链淀粉比例有益于断奶羔羊瘤胃微生物酶活性与瘤胃乳头发育。根据本研究结果,断奶黑山羊饲粮中直链/支链淀粉比例为0.611时较为适宜。

本文引用格式

尹梦洁 , 汪水平 , 冉涛 , 陈凯 , 杨大盛 , 刘勇 , 汤少勋 , 黄棋 , 张永康 , 谭支良 . 饲粮直链/支链淀粉比例对断奶羔羊瘤胃发酵及细菌菌群的影响[J]. 动物营养学报, 2021 , 33(9) : 5142 -5151 . DOI: 10.3969/j.issn.1006-267x.2021.09.034

Abstract

This study aimed to investigate the effects of different dietary amylose/amylopectin ratios on the rumen bacteria, fermentation and the papilla morphological characteristics in the weaned lambs, and provide data support for the formulation of lamb diets. Twenty-seven Xiangdong black lambs with similar initial body weight were randomly allocated to three dietary amylose/amylopectin ratios (0.263, 0.611 and 1.833) in a complete randomized block design. There were nine lambs per treatment. The experiment lasted for 35 days, including 7 days of pre-test period and 28 days of trial period. The results showed that except for the neutral xylanase activity, rumen papilla width and the unmber of Prevotella ruminicola in solid phase of rumen digesta, dietary amylose/amylopectin ratio did not affect the rumen fermentation, enzyme activity, rumen bacterial community, and the height and area of rumen papilla (P>0.05). The neutral xylanase activity (P=0.009) and the width of rumen papilla (P=0.010) were significantly increased, and the number of Prevotella ruminicola in solid phase of rumen digesta was significantly decreased (P=0.010) when the ratio of dietary amylose/amylopectin ratio increased from 0.263 to 1.833. In conclusion, the results suggest that the proper enhancement of dietary amylose/amylopectin ratio can benefit the ruminal microbial enzyme activities and the rumen papilla growth for the weaned lambs. According to the results of this study, it is recommended that the amylose/amylopectin ratio maintaining at 0.611 is suitable for Xiangdong black lambs.

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