动物营养学报 >

2021 , Vol. 33 >Issue 3: 1565 - 1575

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.03.038

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

饲粮中添加胍基乙酸对羔羊生长性能、屠宰性能和肉品质的影响

  • 刘笑梅 ,
  • 郝小燕 ,
  • 张宏祥 ,
  • 杨立彬 ,
  • 项斌伟 ,
  • 张文佳 ,
  • 张春香 ,
  • 张建新
展开
  • 1. 山西农业大学动物科学学院, 太谷 030801;
    2. 山西祥和岭上农牧开发有限公司, 右玉 037200;
    3. 北京君德同创生物技术股份有限公司, 北京 100085;
    4. 山西省右玉县畜牧兽医中心, 右玉 037200
刘笑梅(1995-),女,山西吕梁人,硕士研究生,从事饲料资源开发和利用的研究。E-mail:1070230305@qq.com

收稿日期: 2020-07-24

  网络出版日期: 2021-03-18

基金资助

国家重点研发计划（2018YFD0502104）；国家肉羊产业技术体系专项（CARS-38）；山西省1331工程建设项目（J201911301）；山西省科技成果转化引导专项（201904D131026）

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Effects of Dietary Guanidineacetic Acid on Growth Performance, Slaughter Performance and Meat Quality of Lambs

  • LIU Xiaomei ,
  • HAO Xiaoyan ,
  • ZHANG Hongxiang ,
  • YANG Libin ,
  • XIANG Binwei ,
  • ZHANG Wenjia ,
  • ZHANG Chunxiang ,
  • ZHANG Jianxin
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  • 1. College of Animal Science, Shanxi Agricultural University, Taigu 030801, China;
    2. Shanxi Xianghe Lingshang Agriculture and Animal Husbandry Development Co., Ltd., Youyu 037200, China;
    3. Gendone Biotechnology Co., Ltd., Beijing 100085, China;
    4. Animal Husbandry Bureau of Youyu County, Youyu 037200, China

Received date: 2020-07-24

  Online published: 2021-03-18

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摘要

本试验旨在研究饲粮中添加胍基乙酸（GAA）对羔羊生长性能、屠宰性能和肉品质的影响。试验选取48只4月龄、体重[（24.8±1.3） kg]相近的杜泊×小尾寒羊杂交一代公羔，随机分为4组，每组12只羊。各组分别在基础饲粮中添加0（对照组）、300（300GAA组）、600（600GAA组）和900 mg/kg（900GAA组）的GAA。预试期15 d，正试期70 d。结果表明：1）900GAA组羔羊的末重、平均日增重显著高于对照组、300GAA组和600GAA组（P<0.05），料重比显著低于对照组、300GAA组和600GAA组（P<0.05）。2）900GAA组的胴体重、净肉重显著高于对照组（P<0.05），300GAA组、600GAA组和900GAA组的净肉率和眼肌面积显著高于对照组（P<0.05）。各组之间各器官指数均无显著差异（P>0.05）。3）300GAA组、600GAA组和900GAA组的回肠长度显著高于对照组（P<0.05），900GAA组的回肠重量显著高于对照组、300GAA组和600GAA组（P<0.05）。4）300GAA组、600GAA组和900GAA组的宰后24 h的背最长肌pH显著高于对照组（P<0.05），600GAA组的宰后24 h的背最长肌亮度（L*）值显著高于对照组和300GAA组（P<0.05），300GAA组、600GAA组和900GAA组的背最长肌系水力显著高于对照组（P<0.05），600GAA组和900GAA组的背最长肌粗蛋白质含量显著高于对照组（P<0.05）。综上所述，饲粮中添加适宜水平的GAA能提高羔羊的生长性能、屠宰性能，并改善羊肉品质。本试验中，饲粮中GAA的适宜添加水平为900 mg/kg。

关键词： 胍基乙酸; 羔羊; 生长性能; 屠宰性能; 肉品质

本文引用格式

刘笑梅 , 郝小燕 , 张宏祥 , 杨立彬 , 项斌伟 , 张文佳 , 张春香 , 张建新 . 饲粮中添加胍基乙酸对羔羊生长性能、屠宰性能和肉品质的影响[J]. 动物营养学报, 2021 , 33(3) : 1565 -1575 . DOI: 10.3969/j.issn.1006-267x.2021.03.038

Abstract

This experiment was conducted to investigate the effects of dietary guanidineacetic acid (GAA) on growth performance, slaughter performance and meat quality of lambs. Forty-eight 4-months-old Dorper×thin-tailed Han F1 hybrid ram lambs with similar body weight of (24.8±1.3) kg were randomly divided into 4 groups with 12 sheep in each group. Lambs in four groups were fed basal diets supplemented with 0 (control group), 300 (300GAA group), 600 (600GAA group) and 900 mg/kg (900GAA group) GAA, respectively. The first 15 days were for adaption, and the experimental period lasted for 70 days. The results showed as follows: 1) the final body weight, average daily gain of lambs of 900GAA group were significantly higher than those of control group, 300GAA group and 600GAA group (P<0.05), and the feed to gain ratio of lambs of 900GAA group was significantly lower than that of control group, 300GAA group and 600GAA group (P<0.05). 2) The carcass weight and net meat weight of 900GAA group were significantly higher than those of the control group (P<0.05), and the net meat percentage and eye muscle area of 300GAA group, 600GAA group and 900GAA group were significantly higher than those of the control group (P<0.05). There were no significant differences in organ indexes among all groups (P>0.05). 3) The ileum length of 300GAA group, 600GAA group and 900GAA group was significantly higher than that of the control group (P<0.05), and the ileum weight of 900GAA group was significantly higher than of control group, 300GAA group, 600GAA group (P<0.05). 4) The longissimus dorsi pH after slaughter 24 h of 300GAA group, 600GAA group and 900GAA group was significantly higher than that of the control group (P<0.05), the longissimus dorsi brightness (L*) value after slaughter 24 h of 600GAA group was significantly higher than that of control group and 300GAA group (P<0.05), the longissimus dorsi water holding capacity of 300GAA group, 600GAA group and 900GAA group was significantly higher than that of the control group (P<0.05), and the longissimus dorsi crude protein content of 600GAA group and 900GAA group was significantly higher than that of the control group (P<0.05). In conclusion, dietary appropriate supplementation of GAA can improve the growth performance, slaughter performance of lambs, and improve the meat quality. In this experiment, the dietary optimal GAA supplemental level is 900 mg/kg.

Key words： guanidineacetic acid; lambs; growth performance; slaughter performance; meat quality

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