研究论文 RESEARCH PAPER

断奶期内不同饲粮对羔羊生长、营养物质表观消化率和瘤胃发酵参数的影响

  • 史晨迪 ,
  • 赵晓雅 ,
  • 田沛知 ,
  • 陈佳欣 ,
  • 段春辉 ,
  • 张英杰 ,
  • 刘月琴 ,
  • 纪守坤 ,
  • 严慧
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  • 河北农业大学动物科技学院, 保定 071000
史晨迪(1996—),女,河北邢台人,硕士研究生,从事反刍动物营养研究。E-mail:2311842002@qq.com

收稿日期: 2022-02-15

  网络出版日期: 2022-08-11

基金资助

国家肉羊产业技术体系(CARS-38)

Effects of Different Diets on Growth, Nutrient Apparent Digestibility and Rumen Fermentation Parameters of Lambs during Weaning Period

  • SHI Chendi ,
  • ZHAO Xiaoya ,
  • TIAN Peizhi ,
  • CHEN Jiaxin ,
  • DUAN Chunhui ,
  • ZHANG Yingjie ,
  • LIU Yueqin ,
  • JI Shoukun ,
  • YAN Hui
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  • College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China

Received date: 2022-02-15

  Online published: 2022-08-11

摘要

本试验旨在研究断奶期内不同饲粮对羔羊生长、营养物质表观消化率和瘤胃发酵参数的影响。选取48只健康、体重相近的45日龄湖羊羔羊(公母各占1/2),所有羔羊在45~59日龄随母哺乳,并补饲羔羊精料补充料,在52日龄时,将公母羔羊分别按体重(15.58±2.45) kg随机分为3组,然后公母进行随机配对,每组共16个重复,公羔8只,母羔8只。在60~75日龄,试验1组随母哺乳+补饲羔羊精料补充料,试验2组在60日龄断奶,并饲喂全混合日粮(TMR),试验3组在60日龄断奶,并饲喂50% TMR+50%羔羊精料补充料。羔羊59日龄记为试验第0天。试验期23 d。所有羔羊在试验第-7(52日龄)、0、7、15天于晨饲前称重,并记录每天采食量;在试验第0、3、9和15天于晨饲前采集瘤胃液,测定瘤胃发酵参数。羔羊在试验第-7、3、9、15天进行消化代谢试验,测定营养物质表观消化率。结果表明:1)在试验第0~7天,试验1组羔羊平均日增重(ADG)比试验2组显著提高了87.93%(P<0.05);试验3组羔羊干物质采食量(DMI)比试验1组显著提高了17.03%(P<0.05);试验1、3组粗蛋白质(CP)采食量分别较试验2组显著提高了24.95%、33.06%(P<0.05);试验1、2组总能(GE)采食量分别较试验3组显著降低了16.46%、14.62%(P<0.05);试验2、3组中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)采食量显著高于试验1组(P<0.05);试验1组羔羊料重比分别较试验2、3组显著降低了47.72%、30.21%(P<0.05),试验3组羔羊较试验2组显著降低了25.09%(P<0.05)。在试验第8~15天,试验1、3组羔羊ADG分别比试验2组显著提高了61.67%、88.34%(P<0.05);试验3组羔羊DMI较试验1、2组分别显著提高了25.34%、30.68%(P<0.05);与试验1组相比,试验2组CP采食量显著降低了25.52%(P<0.05),试验3组CP采食量显著提高了12.56%(P<0.05),试验3组CP采食量较试验2组显著提高了51.24%(P<0.05);与试验3组相比,试验1、2组GE、粗脂肪(EE)采食量显著降低(P<0.05);与试验1组相比,试验2、3组NDF、ADF采食量显著升高(P<0.05),试验3组NDF、ADF采食量显著高于试验2组(P<0.05);试验1、3组羔羊料重比分别较试验2组显著降低了35.59%、30.68%(P<0.05)。在试验第0~15天,试验2、3组羔羊腹泻率分别较试验1组提高了187.40%、87.40%。2)不同饲粮显著影响了羔羊EE、NDF和ADF表观消化率(P<0.05);断奶期内时间显著影响了羔羊DM、CP、EE、GE、NDF、ADF和钙(Ca)表观消化率(P<0.05);饲粮与时间交互显著影响了羔羊NDF、ADF表观消化率(P<0.05)。3)不同饲粮显著影响了羔羊瘤胃液pH、氨态氮(NH3-N)、丙酸、丁酸浓度和乙丙比(P<0.05)。断奶期内时间显著影响了羔羊瘤胃液pH、总挥发性脂肪酸(TVFA)、乙酸和丁酸浓度(P<0.05)。饲粮与时间交互显著影响了羔羊瘤胃液pH和乙丙比(P<0.05)。本试验条件下,在羔羊断奶期内,不同饲粮会影响瘤胃发酵和营养物质表观消化率;饲喂50% TMR+50%羔羊精料补充料可显著提高羔羊生长性能。

本文引用格式

史晨迪 , 赵晓雅 , 田沛知 , 陈佳欣 , 段春辉 , 张英杰 , 刘月琴 , 纪守坤 , 严慧 . 断奶期内不同饲粮对羔羊生长、营养物质表观消化率和瘤胃发酵参数的影响[J]. 动物营养学报, 2022 , 34(8) : 5219 -5233 . DOI: 10.3969/j.issn.1006-267x.2022.08.044

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