动物营养学报 >

2021 , Vol. 33 >Issue 7: 4175 - 4182

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.07.058

研究简报 SHORT COMMUNICATION

饲喂不同中性洗涤纤维水平开食料对7~56日龄羔羊生长性能和养分表观消化率的影响

  • 庞鑫 ,
  • 吕凤 ,
  • 汪晓娟 ,
  • 刘国华 ,
  • 李冲 ,
  • 赵海碧
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  • 甘肃农业大学动物科学技术学院, 兰州 730070
庞鑫(1994-),男,甘肃定西人,硕士研究生,研究方向为反刍动物营养。E-mail:347856632@qq.com

收稿日期: 2020-12-16

  网络出版日期: 2021-07-06

基金资助

国家自然科学基金项目（31760682）

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Effects of Starters with Different Neutral Detergent Fiber Levels on Growth Performance and Nutrient Apparent Digestibility of 7 to 56-Day-Old Lambs

  • PANG Xin ,
  • LYU Feng ,
  • WANG Xiaojuan ,
  • LIU Guohua ,
  • LI Chong ,
  • ZHAO Haibi
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  • College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China

Received date: 2020-12-16

  Online published: 2021-07-06

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摘要

本试验旨在探究饲喂不同中性洗涤纤维（NDF）水平开食料对7~56日龄羔羊生长性能和养分表观消化率的影响，以确定羔羊开食料中适宜NDF水平。选用初生重为（3.58±0.06） kg的初生湖羊公羔54只，随机分为3组。7日龄开始饲喂代乳粉同时补饲NDF水平分别为15%、20%、25%的开食料，28日龄断奶饲养至56日龄。结果表明：1）20%和25% NDF组羔羊28~56日龄的平均日增重（ADG）和平均日采食量（ADFI）显著高于15% NDF组（P<0.05）。2）开食料NDF水平对羔羊干物质（DM）和粗蛋白质（CP）表观消化率的影响，在21~28日龄、42~49日龄、49~56日龄和7~56日龄，20% NDF组DM表观消化率显著高于25% NDF组（P<0.05）；在28~49日龄，20% NDF组CP表观消化率显著高于15% NDF组（P<0.05）；20% NDF组羔羊NDF和酸性洗涤纤维（ADF）表观消化率显著高于15%和25% NDF组（P<0.05）。综上所述，在本试验条件下，羔羊生长发育适宜的开食料NDF水平为20%。

关键词： 羔羊; 开食料; NDF; 生长性能; 养分表观消化率

本文引用格式

庞鑫 , 吕凤 , 汪晓娟 , 刘国华 , 李冲 , 赵海碧 . 饲喂不同中性洗涤纤维水平开食料对7~56日龄羔羊生长性能和养分表观消化率的影响[J]. 动物营养学报, 2021 , 33(7) : 4175 -4182 . DOI: 10.3969/j.issn.1006-267x.2021.07.058

Abstract

This experiment was conducted to investigate the effects of starters with different neutral detergent fiber (NDF) levels on growth performance and nutrient apparent digestibility at 7 to 56-day-old lambs, and to determine the appropriate NDF levels in starters. A total of 54 male lambs with initial birth weight of (3.58±0.06) kg were selected and randomly divided into 3 groups, At 7 days of age, the milk substitute and the starters were fed, the NDF level of the starter was respectively 15%, 20% and 25%. Lambs were weaned at 28 days of age, and slaughtered at 56 days of age. The results showed as follows:1) the average daily gain (ADG) and average daily feed intake (ADFI) in the 20% and 25% NDF groups were significantly higher than those in the 15% NDF group (P<0.05). 2) The NDF level of starters affected the apparent digestibilities of dry matter (DM) and crude protein (CP). During 21 to 28 days of age, 42 to 49 days of age, 49 to 56 days of age and 7 to 56 days of age, the DM apparent digestibility in 20% NDF group was significantly higher than that in the 15% and 25% NDF groups (P<0.05). During 28 to 49 days of age, the CP apparent digestibility in 20% NDF group was significantly higher than that in the 15% and 25% NDF groups (P<0.05). The NDF apparent digestibility and ADF apparent digestibility in 20% NDF group were significantly higher than those in the 15% and 25% NDF groups (P<0.01). It is concluded that the appropriate NDF level of starters is 20% on lambs in the present study.

Key words： lamb; starter; NDF; growth performance; nutrient apparent digestibility

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