饲料营养 Feed science and technology

甜菜碱和L-肉碱对蒙寒杂交羊生长性能、屠宰性能、器官发育及脂肪沉积的影响

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  • 1. 中国农业科学院饲料研究所, 农业部饲料生物技术重点实验室, 北京 100081;
    2. 内蒙古河套农业技术研究院, 巴彦淖尔 015000;
    3. 巴彦淖尔市农牧业科学研究院, 巴彦淖尔 015000
杨东(1984-),男,内蒙古巴彦淖尔人,硕士研究生,从事动物营养与饲料科学研究。E-mail:yd276274264@163.com

收稿日期: 2018-05-17

  网络出版日期: 2018-12-19

基金资助

内蒙古自治区科技重大专项"巴美肉羊产业化技术研究集成应用";国家肉羊产业技术体系建设专项资金(CARS-38)

Effects of Betaine and L-Carnitine on Growth Performance, Slaughter Performance, Organ Development and Fat Deposition of Mongolia Hybrid Sheep

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  • 1. Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Inner Mongolia He Tao Institute of Agriculture and Animal Husbandry Technology, Bayannur 015000, China;
    3. Bayannur Academy of Agricultural and Animal Husbandry Sciences, Bayannur 015000, China

Received date: 2018-05-17

  Online published: 2018-12-19

摘要

本研究旨在研究甜菜碱和L-肉碱对蒙寒杂交羊生长性能、屠宰性能、器官发育及脂肪沉积的影响。试验采用单因素试验设计,选取体重为(29.0±0.4) kg的蒙寒杂交羊270只,随机分为3组,每组3个重复,每个重复30只羊。对照组(CON组)饲喂基础饲粮,甜菜碱组(BN组)和L-肉碱组(L-CN组)分别在基础饲粮中添加1‰甜菜碱和0.4‰ L-肉碱。预试期15 d,正试期40 d。结果表明:1)L-CN组平均日采食量显著低于CON组和BN组(P<0.05),各组之间其他生长性能指标均无显著性差异(P>0.05)。2)各组之间宰前活重、胴体重、屠宰率、眼积面积以及胴体脂肪含量值均无显著性差异(P>0.05)。3)各组之间内脏器官发育指标均无显著性差异(P>0.05)。4)L-CN组大肠重量及其所占宰前活重比例显著低于CON组(P<0.05),各组之间其余胃肠道发育指标均无显著性差异(P>0.05)。5)BN组和L-CN组总脂肪重量及其占宰前活重比例均显著低于CON组(P<0.05),L-CN组总脂肪重量及其占宰前活重比例显著高于BN组(P<0.05);CON组尾部脂肪重量及其占宰前活重比例显著高于BN组(P<0.05);各组之间瘤胃脂肪、肠脂肪、心周脂肪、肾周脂肪重量及其占宰前活重比例均无显著差异(P>0.05)。由此可见,饲粮添加甜菜碱和L-肉碱均降低了蒙寒杂交羊的脂肪沉积量,而且主要降低了尾部脂肪的重量,提示我们甜菜碱和L-肉碱对蒙寒杂交羊降低体脂有一定的作用。

本文引用格式

杨东, 王文义, 马涛, 万凡, 王韵斐, 谭军, 张娟, 刁其玉 . 甜菜碱和L-肉碱对蒙寒杂交羊生长性能、屠宰性能、器官发育及脂肪沉积的影响[J]. 动物营养学报, 2018 , 30(12) : 5134 -5144 . DOI: 10.3969/j.issn.1006-267x.2018.12.042

Abstract

The aim of this study was to evaluate the effects of betaine and L-carnitine on growth performance, slaughter performance, organ development and fat deposition of Mongolia hybrid sheep. The single factor design was used in the experiment, a total of 270 Mongolia hybrid sheep with a body weight of (29.0±0.4) kg were randomly assigned into 3 groups with 3 replicates in each group and 30 sheep in each replicate. Sheep in the control group (CON group) were fed a basal diet, and others in the betaine group (BN group) and the L-carnitine group (L-CN group) were fed the basal diets supplemented with 1‰ betaine and 0.4‰ L-carnitine, respectively. The pre-experimental period lasted for 15 days, and the experimental period lasted for 40 days. The results showed as follows: 1) the average daily feed intake of L-CN group was significantly lower than that of CON group and BN group (P<0.05), and the rest growth performance indicators were no significant differences among all groups (P>0.05). 2) There were no significant differences in live weight before slaughter, carcass weight, dressing percentage, eye muscle area and carcass fat content value among all groups (P>0.05). 3) There were no significant differences in internal organ development indices among all groups (P>0.05). 4) The large intestine weight and its percentage of live weight before slaughter of L-CN group were significantly lower than those of CON group (P<0.05), and the rest gastrointestinal development indices were no significant differences among all groups (P>0.05). 5) The total fat weight and its percentage of live weight before slaughter of BN group and L-CN group were significantly lower than those of CON group (P<0.05), the total fat weight and its percentage of live weight before slaughter of L-CN group were significantly higher than those of BN group (P<0.05); the tail fat weight and its percentage of live weight before slaughter of CON group were significantly higher than those of BN group (P<0.05); there were no significant differences in rumen fat, intestines fat, pericardial fat and perirenal fat weight and their percentage of live weight before slaughter among all groups (P>0.05). The results shows that dietary betaine and L-carnitine can reduce the fat deposition of Mongolia hybrid sheep, and mainly reduce the weight of tail fat, which provs that betaine and L-carnitine play an important role in reducing body fat in Mongolia hybrid sheep.

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