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

妊娠期云南半细毛羊能量需要量

  • 武渝瀚 ,
  • 薛白 ,
  • 洪琼花 ,
  • 李湘 ,
  • 王之盛 ,
  • 胡安海 ,
  • 王立志 ,
  • 路明丽 ,
  • 彭全辉
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  • 1. 四川农业大学动物营养研究所, 成都 611130;
    2. 云南省畜牧兽医科学院, 昆明 650224
武渝瀚(1993-),男,贵州遵义人,硕士研究生,从事反刍动物营养研究。E-mail:407293628@qq.com

收稿日期: 2019-12-24

  网络出版日期: 2020-06-16

基金资助

国家现代农业绒毛用羊产业技术体系专项资金(CARS-39);云南省科技创新人才计划(2018HC0017)

Energy Requirements of Yunnan Semi-Fine Wool Sheep during Pregnancy Period

  • WU Yuhan ,
  • XUE Bai ,
  • HONG Qionghua ,
  • LI Xiang ,
  • WANG Zhisheng ,
  • HU Anhai ,
  • WANG Lizhi ,
  • LU Mingli ,
  • PENG Quanhui
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  • 1. Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China;
    2. Yunnan Animal Science and Veterinary Institute, Kunming 650224, China

Received date: 2019-12-24

  Online published: 2020-06-16

摘要

本试验旨在研究妊娠期云南半细毛羊的能量需要量。选取30只体重相近的妊娠期云南半细毛羊,随机分为5组,每组6个重复,每个重复1只羊。在不同饲粮代谢能(ME)水平(妊娠前期、中期分别为7.41、8.43、9.06、9.44和10.07 MJ/kg,妊娠后期分别为7.42、8.37、9.02、9.43和9.98 MJ/kg)下,通过饲养试验、消化代谢试验、气体代谢试验相结合的研究方法,探究妊娠期云南半细毛羊的能量代谢规律以及能量需要量。结果表明:云南半细毛羊妊娠期的ME需要量与代谢体重(W0.75)和平均日增重(ADG)间的关系为:妊娠前期,ME (kJ/d)=373.304W0.75+19.579ADG (R2=0.971);妊娠中期,ME (kJ/d)=385.711W0.75+20.725ADG (R2=0.952);妊娠后期,ME (kg/d)=425.267W0.75+26.693ADG (R2=0.952)。由以上回归方程可知,云南半细毛羊妊娠前期、中期和后期的维持代谢能(MEm)需要量分别为373.304、385.711和425.267 kJ/kg W0.75。妊娠前期、中期和后期云南半细毛羊每100 g日增重的ME需要量分别为1 957.9、2 072.5和2 669.3 kJ。产热量(HP)与代谢能采食量(MEI)间符合对数模型:妊娠前期,lgHP=0.000 3MEI+2.449 3(R2=0.691 8);妊娠中期,lgHP=0.000 2MEI+2.482 2(R2=0.674 8);妊娠后期:lgHP=0.000 2MEI+2.530 6(R2=0.673 0)。因此,妊娠前期、中期和后期云南半细毛羊维持净能(NEm)需要量分别为281.38、303.53和339.31 kJ/kg W0.75,代谢能用于维持的效率(Km,Km=NEm/MEm)分别为0.754、0.787、0.798。

本文引用格式

武渝瀚 , 薛白 , 洪琼花 , 李湘 , 王之盛 , 胡安海 , 王立志 , 路明丽 , 彭全辉 . 妊娠期云南半细毛羊能量需要量[J]. 动物营养学报, 2020 , 32(6) : 2738 -2746 . DOI: 10.3969/j.issn.1006-267x.2020.06.033

Abstract

This experiment was conducted to study the energy requirements Yunnan semi-fine wool (YSW) sheep during pregnancy period. Thirty YSW sheep during pregnancy period with similar body weight were randomly divided into 5 groups with 6 replicates per group and 1 sheep per replicate. With different dietary metabolizable energy (ME) levels (pre- and mid-pregnancy period were 7.41, 8.43, 9.06, 9.44 and 10.07 MJ/kg, respectively; late pregnancy period were 7.42, 8.37, 9.02, 9.43 and 9.98 MJ/kg), the energy metabolism regularities and energy requirements were studied by the combination of feeding experiment, digestion and metabolism test and gas exchange test. The results showed that the correlation among ME requirement, metabolic body weight (W0.75) and average daily gain (ADG) in different pregnancy periods were as follows: pre-pregnancy period, ME (kJ/d)=373.304W0.75+19.579ADG (R2=0.971); mid-pregnancy period, ME (kJ/d)=385.711W0.75+20.725ADG (R2=0.952); late pregnancy period, ME (kJ/d)=425.267W0.75+26.693ADG (R2=0.952). The metabolic energy for maintaining (MEm) requirements gained from the above correlation equations were 373.304, 385.711 and 425.267 kJ/kg W0.75 for YSW sheep during pre-, mid- and late pregnancy period, respectively. ME required for 100 g daily gain were 1 957.9, 2 072.5, and 2 626.3 kJ for YSW sheep during pre-, mid- and late-pregnancy period, respectively. Heat production (HP) was logarithmicly correlated to ME intake (MEI) according to the logarithmic model: pre-pregnancy period, lg HP=0.000 3MEI+2.449 3 (R2=0.691 8); mid-pregnancy period, lgHP=0.000 2MEI+2.482 2 (R2=0.674 8); late pregnancy period, lgHP=0.000 2MEI+2.530 6 (R2=0.673 0). Thus, the net energy for maintenance (NEm) requirements are 281.38, 303.53 and 339.31 kJ/kg W0.75 for YSW sheep during pre-, mid- and late-pregnancy periods, respectively. The efficiency of ME used for maintenance (Km) are 0.754, 0.787 and 0.798 for YSW sheep during pre-, mid- and late-pregnancy periods, respectively.

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