动物营养学报 >

2020 , Vol. 32 >Issue 12: 5994 - 6000

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.12.054

研究简报 SHORT COMMUNICATION

冬毛生长期雄性水貂净能需要量研究

  • 韩菲菲 ,
  • 钟伟 ,
  • 张新宇 ,
  • 穆琳琳 ,
  • 陈双双 ,
  • 王卓 ,
  • 刘可园 ,
  • 李光玉
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  • 中国农业科学院特产研究所, 特种经济动物分子生物学国家重点实验室, 长春 130112
韩菲菲(1995-),女,山东日照人,硕士研究生,研究方向为特种动物营养需要量与消化生理。E-mail:Amyhan950311@126.com

收稿日期: 2020-04-30

  网络出版日期: 2020-12-07

基金资助

中国农业科学院科技创新工程（CAAS-ASTIP-2019-ISAPS）；吉林省重点科技成果转化项目（20160307022NY）

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Net Energy Requirement of Male Minks during Winter Fur-Growing Period

  • HAN Feifei ,
  • ZHONG Wei ,
  • ZHANG Xinyu ,
  • MU Linlin ,
  • CHEN Shuangshuang ,
  • WANG Zhuo ,
  • LIU Keyuan ,
  • LI Guangyu
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  • State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Economic Animal and Plant Science, Chinese Academy of Agriculture Sciences, Changchun 130112, China

Received date: 2020-04-30

  Online published: 2020-12-07

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摘要

本试验采用6室并联毛皮动物开放呼吸回流式测热装置研究并计算冬毛生长期雄性水貂净能（NE）需要量，为我国水貂精细化养殖提供参考数据。本试验选取日龄、体重相近的健康雄性黑水貂30只，预试期7 d，使水貂适应试验饲粮，然后进行呼吸测热试验，呼吸测热试验共设3期，每期7 d，每期3个重复，每个重复2只水貂。每期呼吸测热试验开始前，将试验动物称重并从中选取6只水貂，每2只放进呼吸测热装置的1个代谢室内，代谢室内测定气体交换7 d，其中适应期1 d，正常代谢3 d，绝食代谢3 d。结果表明：1）水貂正常采食时代谢能摄入量（MEI）为755.69 kJ/（kg BW0.75·d），产热量（HP）为526.31 kJ/（kg BW0.75·d），生长净能（NEg）为229.00 kJ/（kg BW0.75·d）；绝食产热量（FHP）为489.75 kJ/（kg BW0.75·d），NE需要量为718.75 kJ/（kg BW0.75·d）。2）冬毛生长期水貂正常采食状态时氧气（O2）消耗量为26.19 L/（kg BW0.75·d），二氧化碳（CO2）产出量为21.26 L/（kg BW0.75·d），呼吸熵（RQ）为0.82。绝食状态时O2消耗量为24.63 L/（kg BW0.75·d），CO2产出量为19.44 L/（kg BW0.75·d），RQ为0.79。3）经MEI与沉积能（RE）建立的线性回归方程计算，维持净能（NEm）为493.20 kJ/（kg BW0.75·d），维持代谢能（MEm）为519.80 kJ/（kg BW0.75·d），能量转化效率（Km）为95.46%。经MEI与HP反对数建立的线性回归方程计算，NEm为474.24 kJ/（kg BW0.75·d），MEm为514.00 kJ/（kg BW0.75·d），Km为92.27%。综上所述，由开放式呼吸测热装置测得，体重为1.92~2.40 kg的冬毛生长期雄性水貂能量需要量为：MEm 514.00~519.80 kJ/（kg BW0.75·d），NEm 474.24~493.20 kJ/（kg BW0.75·d），NEg 229.00 kJ/（kg BW0.75·d），NE 718.75 kJ/（kg BW0.75·d）；Km为92.27%~95.46%。

关键词： 水貂; 冬毛生长期; 能量平衡; 气体代谢; 能量需要量

本文引用格式

韩菲菲 , 钟伟 , 张新宇 , 穆琳琳 , 陈双双 , 王卓 , 刘可园 , 李光玉 . 冬毛生长期雄性水貂净能需要量研究[J]. 动物营养学报, 2020 , 32(12) : 5994 -6000 . DOI: 10.3969/j.issn.1006-267x.2020.12.054

Abstract

This experiment adopted open circuit respiratory calorimetry with 6 chambers in parallel for fur animal to analyze and calculate the net energy (NE) requirement of male minks during winter fur-growing period, and to provide more accurate data reference for mink industry in China. Thirty heathy male minks with similar days of age and body weight were selected and fed an experimental diet, an adaptation period of 7 d was used to adapt the experimental diet and then respiratory calorimetry test was carried out. In the test, three phases were set up, and each of which lasted for 7 d. There were 3 replicates in each phase and 2 minks in each replicate. After weighing each phase, 6 minks were selected and each 2 minks were put into the respiration chambers. The gas exchange was measured in the metabolism chamber for 7 days. There were 1 d for adaptation, and 3 d for normal metabolism, and then 3 d for fasting metabolism. The results showed as followed: 1) the metabolizable energy intake (MEI) was 755.69 kJ/(kg BW0.75·d), heat production(HP)was 526.31 kJ/(kg BW0.75·d), net energy for growth (NEg) was 229.00 kJ/(kg BW0.75·d) during balance trail. Fasting heat production (FHP) was 489.75 kJ/(kg BW0.75·d), the NE requirement was 718.75 kJ/(kg BW0.75·d). 2) The O2 consumption was 26.19 L/(kg BW0.75·d), the CO2 production was 21.26 L/(kg BW0.75·d), and the respiratory quotient (RQ) was 0.82 during balance trail. The O2 consumption was 24.63 L/(kg BW0.75·d), the CO2 production was 19.44 L/(kg BW0.75·d), and RQ value was 0.79 during fast period. 3) The metabolizable energy for maintenance (MEm) and net energy for maintenance (NEm) requirement estimated from the linear relationship between retained energy (RE) and MEI were 519.80 and 493.20 kJ/(kg BW0.75·d), respectively. The MEm and NEm estimated by logarithmic regression of HP on MEI were 514.00 and 474.24 kJ/(kg BW0.75·d), respectively. In conclusion, the energy requirements of the male minks during the winter fur-growing period of 1.92 to 2.40 kg body weight are: MEm 514.00 to 519.80 kJ/(kg BW0.75·d), NEm 474.24 to 493.20 kJ/(kg BW0.75·d), NEg 229.00 kJ/(kg BW0.75·d), NE 718.75 kJ/(kg BW0.75·d), respectively, and the Km is 92.27% to 95.46%.

Key words： mink; winter fur-growing period; energy balance; respiratory metabolism; energy requirement

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