动物营养学报 >

2014 , Vol. 26 >Issue 8: 2169 - 2175

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.08.019

反刍与草食动物营养 Ruminants and Herbivorous Animal Nutrition

开食料中性洗涤纤维水平对哺乳羔羊生长性能和消化道发育的影响

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  • 甘肃农业大学动物科学技术学院, 兰州 730070
王世琴（1988-），女，安徽阜南人，硕士研究生，从事肉羊生产技术研究。E-mail：1020150049@qq.com

收稿日期: 2014-03-06

  网络出版日期: 2014-08-13

基金资助

国家自然科学基金“早期断奶羔羊瘤胃发育的影响极其分子机理研究”（31260564）；农业部现代农业产业技术体系建设专项资金（CARS-39）

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Effects of Neutral Detergent Fiber Level of Starter on Growth Performance and Digestive Tract Development of Suckling Lambs

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  • College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070

Received date: 2014-03-06

  Online published: 2014-08-13

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摘要

为研究开食料中性洗涤纤维（NDF）水平对1~35日龄羔羊生长性能和消化道发育的影响，本试验选用24只体况良好、初生重[（3.01±0.12）kg]相近的湖羊初生公羔，采用单因素随机分组设计分为4组，每组6只羔羊，对照组随母哺乳不补饲，高、中、低NDF组在随母羊哺乳的基础上从7日龄开始自由采食NDF水平分别为17.01%、13.65%和11.32%的开食料。35日龄屠宰，测定消化道各部位的重量、容积以及各肠段的长度。结果表明：1）高NDF组末重、平均日增重和胴体重显著高于对照组（P<0.05），其胴体重也显著高于低NDF组（P<0.05）。2）高、中、低NDF组瘤网胃重量均显著高于对照组（P<0.05），高NDF组瘤网胃容积显著高于对照组（P<0.05）；高NDF组皱胃重量显著高于对照组和低NDF组（P<0.05）。3）高、低NDF组空肠重量显著高于对照组（P<0.05），高NDF组空肠容积显著高于对照组（P<0.05）。综合各项指标可认为本试验条件下，哺乳羔羊适宜的开食料NDF水平为17.01%，该水平下羔羊生长性能和消化道发育状况最好。

关键词： 哺乳羔羊; 开食料; NDF; 生长性能; 消化道发育

本文引用格式

王世琴, 李冲, 李发弟, 汪晓娟, 王维民, 刘婷 . 开食料中性洗涤纤维水平对哺乳羔羊生长性能和消化道发育的影响[J]. 动物营养学报, 2014 , 26(8) : 2169 -2175 . DOI: 10.3969/j.issn.1006-267x.2014.08.019

Abstract

In order to investigate the effects of neutral detergent fiber (NDF) level of starter on growth performance and digestive tract development of suckling lambs, twenty-four healthy new born male Hu lambs with similar birth weight [(3.01±0.12) kg] were divided into 4 groups with 6 lambs in each group by a one factor design. Lambs in control group were ewe reared without dietary supplementation, and those in high, medium and low NDF groups were ad libitum fed starter with 17.01%, 13.65% and 11.32% NDF, respectively, based on ewe reared from 7 days of age. All lambs were slaughtered at 35 days of age to determine weight and the volume of each part of digestive tract and the length of each part of intestinal tract. The results showed as follows: 1) final weight, average daily gain and carcass weight of high NDF group were significantly higher than those of control group (P<0.05), and carcass weight of high NDF group was significantly higher than that of low NDF group (P<0.05). 2) Abomasum weight of high, medium and low NDF groups was significantly higher than that of control group (P<0.05), and reticulorumen volume of high NDF group was significantly higher than that of control group (P<0.05); abomasum weight of high NDF group was significantly higher than that of control group and low NDF group (P<0.05). 3) Jejunum weight of high and low NDF groups was significantly higher than that of control group (P<0.05), and jejunum volume of high NDF group was significantly higher than that of control group (P<0.05). It is concluded that the optimal NDF level of starter for suckling lambs is 17.01% under the conditions in the present study, and lambs can obtain best growth performance and digestive tract development under the above level.

Key words： sucking lambs; starter; NDF; growth performance; digestive tract development

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