动物营养学报 >

2022 , Vol. 34 >Issue 12: 7970 - 7980

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.12.045

研究论文 RESEARCH PAPER

生长期德州驴能量需要量研究

  • 杨泉 ,
  • 王云 ,
  • 张晨 ,
  • 刁克强 ,
  • 李晗 ,
  • 张桂国 ,
  • 张崇玉
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  • 山东农业大学动物科技学院, 山东省动物生物工程与疾病防治重点实验室, 泰安 271018
杨泉(1996—),男,山东菏泽人,硕士研究生,从事动物营养与饲料科学研究。E-mail:2784765442@qq.com

收稿日期: 2022-05-05

  网络出版日期: 2022-12-15

基金资助

山东省现代农业产业技术体系产业创新团队（SDAIT-27-02，SDAIT-23-05）；驴良种高效繁育及配套饲养技术集成与示范（S190503110001-1cy）；山东省驴产业科技协同创新中心开放课题（3193308）；山东省良种工程（南种北繁，2017LZN036）

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Energy Requirement of Dezhou Donkeys during Growth Period

  • YANG Quan ,
  • WANG Yun ,
  • ZHANG Chen ,
  • DIAO Keqiang ,
  • LI Han ,
  • ZHANG Guiguo ,
  • ZHANG Chongyu
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  • Shandong Key Laboratory of Animal Bioengineering and Disease Prevention and Control, School of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2022-05-05

  Online published: 2022-12-15

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摘要

本试验旨在对110~160 kg生长期德州驴能量需要量进行研究。选取体重110 kg左右的6月龄德州驴30头，根据体重相近原则分为3个组（低能组、中能组和高能组），每组10个重复，每个重复1头。试验从体重110 kg左右开始，直到体重160 kg左右结束。试验共分为2期：试验Ⅰ期适应期15 d，正试期60 d；试验Ⅱ期适应期20 d，正试期30 d。试验Ⅰ期前30 d定额饲喂，后30 d自由采食；试验Ⅱ期自由采食。试验Ⅰ期低能组、中能组和高能组的饲粮消化能分别为9.51、10.05和12.36 MJ/kg；试验Ⅱ期低能组、中能组和高能组的饲粮消化能分别为10.61、10.95和11.82 MJ/kg。结果表明：1）110~160 kg生长期德州驴在采食3种能量水平饲粮时，高能组对总能消化率（DE/GE）以及干物质（DM）、有机物（OM）、无氮浸出物（NFE）、碳水化合物（CHO）和中性可溶性碳水化合物（NDSC）表观消化率均显著高于中能组和低能组（P<0.05）。2）不同能量水平饲粮对110~160 kg生长期德州驴的平均日增重（ADG）和料重比（F/G）影响显著（P<0.05）。3）不同能量水平饲粮对110~160 kg生长期德州驴的DE/GE和总能代谢率（ME/GE）影响显著（P<0.05），对代谢能/消化能（ME/DE）影响不显著（P>0.05）。综合本试验结果得出，110~160 kg生长期德州驴能量需要量模型分别为：消化能需要量（DER，kJ）=541.07W0.75+23.78ADG （r=0.996 5，n=90，P<0.01）；代谢能需要量（MER，kJ）=511.23W0.75+22.21ADG （r=0.990 4，n=90，P<0.01），W0.75为代谢体重。

关键词： 生长期德州驴; 能量需要量; 能量利用率; 生长性能

本文引用格式

杨泉 , 王云 , 张晨 , 刁克强 , 李晗 , 张桂国 , 张崇玉 . 生长期德州驴能量需要量研究[J]. 动物营养学报, 2022 , 34(12) : 7970 -7980 . DOI: 10.3969/j.issn.1006-267x.2022.12.045

Abstract

The objective of this experiment was to investigate the energy requirement of Dezhou donkeys during 110 to 160 kg growing period. Thirty 6-month-old Dezhou donkeys with body weight about 110 kg were divided into 3 groups (low energy group, medium energy group and high energy group) according to the principle of similar body weight, each group contained 10 replicates and 1 donkey in each replicate. The experiment started with the body weight about 110 kg and ended with the body weight about 160 kg. The experiment divided into two phases:the adaptation period of test phase Ⅰ was 15 days, and the trial period was 60 days; the adaptation period of test phase Ⅱ was 20 days, and the trial period was 30 days. During the test phase Ⅰ, donkeys were fed with a fixed amount of diet in first 30 days of, and free feeding in last 30 days; During the test phase Ⅱ, donkeys were free feeding. During the test phase Ⅰ, the dietary digestible energy of low energy group, medium energy group and high energy group were 9.51, 10.05 and 12.36 MJ/kg, respectively. During the test phase Ⅱ, the dietary digestible energy of low energy group, medium energy group and high energy group were 10.61, 10.95 and 11.82 MJ/kg, respectively. The results showed as follows:1) when the Dezhou donkeys during 110 to 160 kg growing period were fed with 3 kinds of energy level diets, the gross energy digestibility (DE/GE) and apparent digestibility of dry matter (DM), organic matter (OM), nitrogen free extract (NFE), carbohydrate (CHO) and neutral soluble carbohydrate (NDSC) of high energy group were significantly higher than those of low energy group and medium energy group (P<0.05). 2) Diets with different energy levels had significant effects on the average daily gain (ADG) and feed to gain ratio (F/G) of Dezhou donkeys during 110 to 160 kg growth period (P<0.05). 3) Diets with different energy levels had significant effects on the DE/GE and gross energy metabolic rate (ME/GE) of Dezhou donkeys during 110 to 160 kg growth period (P<0.05), while had no significant effect on metabolizable energy/digestive energy (ME/DE) (P>0.05). Based on the experiment results, The energy requirement models of Dezhou donkeys during 110 to 160 kg growth period were as follows:Digestive energy requirement (DER, kJ)=541.07W0.75+23.78ADG (r=0.996 5, n=90, P<0.01), metabolizable energy requirement (MER, kJ)=511.23W0.75+22.21ADG (r=0.990 4, n=90, P<0.01), and the W0.75 was metabolic weight.

Key words： Dezhou donkeys during growth period; energy requirement; energy utilization; growth performance

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