动物营养学报 >

2020 , Vol. 32 >Issue 7: 3403 - 3411

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.07.050

研究简报 SHORT COMMUNICATION

饲粮粗纤维水平与砂砾对四川白鹅肠道组织形态、纤维分解酶活性及挥发性脂肪酸含量的影响

  • 金灵 ,
  • 罗海凌 ,
  • 高玉云 ,
  • 杨琳
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  • 1. 福建农林大学国家菌草工程技术研究中心, 福州 350002;
    2. 福建农林大学动物科学学院, 福州 350002;
    3. 华南农业大学动物科学学院, 广州 510642
金灵(1984-),女,四川宜宾人,博士,研究方向为动物营养与饲料资源开发。E-mail:lingjin5@vip.163.com

收稿日期: 2019-11-19

  网络出版日期: 2020-07-15

基金资助

福建省自然科学基金（2018J01599）；国家水禽产业技术体系（CARS-43-14）

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Effects of Dietary Fiber Lever and Grit on Intestinal Morphology, Cellulolytic Enzyme Activities and Volatile Fatty Acid Contents in Sichuan White Geese

  • JIN Ling ,
  • LUO Hailing ,
  • GAO Yuyun ,
  • YANG Lin
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  • 1. China National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2. College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3. College of Animal Science, South China Agricultural University, Guangzhou 510642, China

Received date: 2019-11-19

  Online published: 2020-07-15

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摘要

本试验旨在研究饲粮粗纤维（CF）水平和砂砾对鹅肠道组织形态、纤维分解酶活性及挥发性脂肪酸（VFA）含量的影响。试验采用双因素试验设计，即是否添加砂砾（-砂砾、+砂砾）以及3个CF水平（4.0%、7.0%、10.0%）。试验选取体重接近的22日龄四川白鹅公鹅648只，分为6个处理，每个处理6个重复，每个重复18只，饲养至70日龄屠宰采样。结果表明：1）7.0%组和10.0%组空肠绒毛高度显著高于4.0%组（P<0.05），10.0%组盲肠绒毛高度和绒毛高度与隐窝深度比值显著高于4.0%组和7.0%组（P<0.05）；添加砂砾显著降低了盲肠隐窝深度（P<0.05）。2）10.0%组十二指肠纤维素酶和木聚糖酶活性显著高于4.0%组（P<0.05）；但4.0%组盲肠纤维素酶活性显著高于7.0%组（P<0.05），且其木聚糖酶活性显著高于7.0%组和10.0%组（P<0.05）。3）10.0%组空肠和回肠乙酸含量显著高于7.0%组（P<0.05）。综上，在本试验条件下，提高饲粮CF水平改善了22~70日龄鹅的小肠和盲肠绒毛组织形态，促进了鹅小肠的微生物发酵；推荐22~70日龄四川白鹅饲粮CF水平可高达10.0%，水泥地面饲养大鹅阶段可不用添加砂砾。

关键词： 粗纤维; 砂砾; 鹅; 肠道组织形态; 纤维分解酶; 挥发性脂肪酸

本文引用格式

金灵 , 罗海凌 , 高玉云 , 杨琳 . 饲粮粗纤维水平与砂砾对四川白鹅肠道组织形态、纤维分解酶活性及挥发性脂肪酸含量的影响[J]. 动物营养学报, 2020 , 32(7) : 3403 -3411 . DOI: 10.3969/j.issn.1006-267x.2020.07.050

Abstract

This study was investigated the effects of dietary crude fiber (CF) level and grit on intestinal morphology, cellulolytic enzyme activities and volatile fatty acid contents in geese. This experiment was adopted a two factorial design, which consisting with or without grit addition and three levels of dietary CF (4.0%, 7.0% and 10.0%). A total of 648 Sichuan white male geese at 22 days of age were divided into 6 treatments, each with 6 replicates, each replicate with eighteen geese. At 70 days of age, geese were slaughtered to collect samples. The results showed as follow:1) the jejunum villus height in 7.0% group and 10.0% group was significantly higher than that in 4.0% group (P<0.05), and cecal villus height and cecal villus height to crypt depth ratio in 10.0% group were significantly higher than those in 4.0% group and 7.0% group (P<0.05). The addition of grit significantly reduced the depth of the cecal crypt (P<0.05). 2) The cellulase and xylanase activities in duodenum in 10.0% group was significantly higher than that in 4.0% group (P<0.05); the cellulase activity in cecum in 4.0% group was significantly higher than that in 7.0% group (P<0.05), and xylanase activity was significantly higher than that in 7.0% group and 10.0% group (P<0.05). 3) The acetic acid content in the jejunum and ileum in 10.0% group were significantly higher than those in 7.0% group (P<0.05). In conclusion, increasing dietary CF levels increase the development of the small intestine and cecal villi in growing geese; and mainly promote the microbial fermentation of small intestines in geese. It is recommended that CF level for 22 to 70 aged Sichuan white geese diet can be up to 10%; and there is no need to add grit to growing or finishing geese raised on concrete floor.

Key words： crude fiber; grit; geese; intestinal morphology; cellulolytic enzyme; volatile fatty acids

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