回归模型法测定生长期云南半细毛羊的能量需要量

李湘; 路明丽; 洪琼花; 薛白; 武渝瀚; 胡安海; 王之盛; 王立志; 彭全辉

doi:10.3969/j.issn.1006-267x.2020.01.052

动物营养学报 >

2020 , Vol. 32 >Issue 1: 447 - 454

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.01.052

研究简报 SHORT COMMUNICATION

回归模型法测定生长期云南半细毛羊的能量需要量

李湘 ,
路明丽 ,
洪琼花 ,
薛白 ,
武渝瀚 ,
胡安海 ,
王之盛 ,
王立志 ,
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

李湘(1995-),女,四川绵阳人,硕士研究生,从事反刍动物营养研究。E-mail:1071271012@qq.com

收稿日期: 2019-07-02

网络出版日期: 2020-01-19

基金资助

国家现代农业绒毛用羊产业技术体系专项（CARS-39）；云南省科技人才和平台计划（2018C108）

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Energy Requirement of Yunnan Semi-Fine-Wool Sheep during Growing Period by Regression Model Method

LI Xiang ,
LU Mingli ,
HONG Qionghua ,
XUE Bai ,
WU Yuhan ,
HU Anhai ,
WANG Zhisheng ,
WANG Lizhi ,
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: 2019-07-02

Online published: 2020-01-19

Supported by

Fold

摘要

本试验旨在确定生长期云南半细毛羊的能量需要量，为该品种羊饲粮的配制提供理论数据。试验采用饲养试验和消化代谢试验相结合的方法进行。选择45只体况良好、体重（33.30±1.77）kg、10月龄的云南半细毛羊羯羊，随机分为5组，每组9个重复，每个重复1只羊。5组试验羊所喂饲粮代谢能水平分别为8.00、8.60、9.20、9.80、10.40 MJ/kg，其他营养水平基本一致，预试期15 d，正试期30 d。在饲养试验正试期的第7天于每组中随机选择5只羊于代谢笼内，采用全收粪尿法进行为期7 d的消化代谢试验。结果显示：1）饲粮能量水平对生长期云南半细毛羊的终末体重、干物质采食量和料重比有显著影响（P<0.05），随着饲粮能量水平的提高，料重比显著下降（P<0.05）；2）饲粮能量水平对生长期云南半细毛羊的总能表观消化率、总能代谢率和消化能代谢率有显著影响（P<0.05），总能表观消化率、总能代谢率和消化能代谢率随饲粮能量水平的提高而升高；3）生长期云南半细毛羊消化能（DE）和代谢能（ME）需要量与代谢体重（W^0.75）和平均日增重（ADG）的回归方程分别为DE（MJ/d）=0.678 0W^0.75+0.028ADG（P<0.001，R²=0.999）、ME（MJ/d）=0.570 7W^0.75+0.025ADG（P<0.001，R²=0.999）。根据以上结果得出，生长期云南半细毛羊的维持ME需要量为0.570 7 MJ/（kg W^0.75·d），每增重100 g的ME需要量为2.5 MJ。

关键词： 云南半细毛羊; 生长期; 能量; 需要量

本文引用格式

李湘 , 路明丽 , 洪琼花 , 薛白 , 武渝瀚 , 胡安海 , 王之盛 , 王立志 , 彭全辉 . 回归模型法测定生长期云南半细毛羊的能量需要量[J]. 动物营养学报, 2020 , 32(1) : 447 -454 . DOI: 10.3969/j.issn.1006-267x.2020.01.052

Abstract

The objective of this study was to determine the energy requirement of Yunnan semi-fine-wool sheep during growing period, and provide theoretical data for formulating diet for this species. The combination method of feeding experiment and digestion and metabolism experiment was used in this experiment. Forty-five castrated Yunnan semi-fine-wool sheep, weighted (33.30±1.77) kg and aged 10 months, were randomly allocated to 5 groups with 9 replicates per group and 1 sheep per replicate. The metabolic energy levels for diets of 5 groups were 8.00, 8.60, 9.20, 9.80 and 10.40 MJ/kg, respectively, and other nutrient levels were consistent. There was a pretrial period of 15 d followed by an experimental period of 30 d. On the 7th day of the experimental experiment, five sheep were randomly selected from each group in metabolism cage for digestion and metabolism experiment of 7d by total collection of feces and urine. The results showed as follows:1) dietary energy level had significant effects on final body weight, dry matter intake and feed/gain of Yunnan semi-fine-wool sheep (P<0.05), and the feed/gain was significantly decreased with the dietary energy level increasing (P<0.05). 2) Dietary energy level had significant effects on the gross energy apparent digestibility, gross energy metabolic rate and digestive energy metabolic rate of Yunnan semi-fine-wool sheep (P<0.05), and them were increased with the dietary energy level increasing. 3) The regression equations between digestible energy (DE) or metabolizable energy (ME) intakes and metabolic weight (W^0.75) and average daily gain (ADG) of Yunnan semi-fine-wool sheep during growing period were DE(MJ/d)=0.678 0W^0.75+0.028ADG(P<0.001, R²=0.999) and ME(MJ/d)=0.570 7W^0.75+0.025ADG(P<0.001, R²=0.999), respectively. According to above findings, the requirement of maintenance ME for Yunnan semi-fine-wool sheep during growing period is 0.570 7 MJ/(kg W^0.75·d), and the requirement of ME for 100 g gain is 2.5 MJ.

Key words： Yunnan semi-fine-wool sheep; growing period; energy; requirement

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