动物营养学报 >

2020 , Vol. 32 >Issue 5: 2273 - 2281

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.05.036

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

饲粮添加不同水平酵母培养物对育肥湖羊生长性能、屠宰性能、内脏器官发育及肉品质的影响

  • 赵国宏 ,
  • 王世国 ,
  • 王芬 ,
  • 王宏 ,
  • 刁其玉 ,
  • 王世琴 ,
  • 张乃锋
展开
  • 1. 中国农业科学院饲料研究所, 农业农村部饲料生物技术重点实验室, 北京 100081;
    2. 江苏省东辛农场有限公司, 连云港 222000;
    3. 北京英惠尔生物技术有限公司, 北京 100083
赵国宏(1987-),男,江苏南京人,硕士,从事动物营养与饲料科学的研究。E-mail:459696251@qq.com

收稿日期: 2019-11-05

  网络出版日期: 2020-05-15

基金资助

国家重点研发计划课题（2017YFD0502001）；国家肉羊产业技术体系（CARS-38）；北京英惠尔生物技术有限公司横向课题（RS201805）

收起

Effects of Dietary Different Supplemental Levels of Yeast Culture on Growth Performance, Slaughter Performance, Visceral Organ Development and Meat Quality of Fattening Hu Sheep

  • ZHAO Guohong ,
  • WANG Shiguo ,
  • WANG Fen ,
  • WANG Hong ,
  • DIAO Qiyu ,
  • WANG Shiqin ,
  • ZHANG Naifeng
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  • 1. Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Jiangsu Dongxin Farm Co., Ltd., Lianyungang 222000, China;
    3. Beijing Enhalor Biotechnology Co., Ltd., Beijing 100083, China

Received date: 2019-11-05

  Online published: 2020-05-15

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摘要

本试验旨在研究饲粮添加不同水平酵母培养物对育肥湖羊生长性能、屠宰性能、内脏器官发育及肉品质的影响。选取3~4月龄平均体重38 kg的育肥湖羊公羊120只，随机分为4组，每组5个重复，每重复6只羊。试验分为育肥前期（1~60 d）和育肥后期（61~90 d）2个阶段，育肥前期和育肥后期基础饲粮精粗比分别为60：40和75：25。育肥全期（1~90 d）对照组均饲喂基础饲粮；育肥前期，试验组在基础饲粮中分别添加5（A组）、10（B组）、20 g/d（C组）的YC；育肥后期，试验组在基础饲粮中分别添加10（A组）、20（B组）、40 g/d（C组）的YC。预试期7 d，正试期90 d。结果表明：1）在育肥前期，各组之间平均日增重无显著影响（P>0.05）；但在育肥后期和育肥全期，A组平均日增重显著高于对照组（P<0.05），料重比显著低于对照组（P<0.05）。2）各组之间宰前活重、胴体重、屠宰率、眼肌面积和GR值差异均不显著（P>0.05）。3）A组肾脏重量显著高于对照组（P<0.05），各组之间心脏、肝脏、肺脏、脾脏重量及其占宰前活重比例差异均不显著（P>0.05）。4）各组之间瘤胃、网胃、瓣胃、皱胃重量及其占宰前活重比例差异均不显著（P>0.05）。5）各组之间肌肉pH、滴水损失率、肉色差异均不显著（P>0.05）。由此可见，本试验条件下，饲粮中添加YC对育肥湖羊屠宰性能及肉品质无改善作用，饲粮中添加10 g/d的YC提高了湖羊育肥后期的生长性能。

关键词： 育肥羊; 酵母培养物; 高精料饲粮; 生长性能; 屠宰性能; 肉品质

本文引用格式

赵国宏 , 王世国 , 王芬 , 王宏 , 刁其玉 , 王世琴 , 张乃锋 . 饲粮添加不同水平酵母培养物对育肥湖羊生长性能、屠宰性能、内脏器官发育及肉品质的影响[J]. 动物营养学报, 2020 , 32(5) : 2273 -2281 . DOI: 10.3969/j.issn.1006-267x.2020.05.036

Abstract

The objective of this study was conducted to study the effects of dietary different supplemental levels of yeast culture (YC) on growth performance, slaughter performance, visceral organ development and meat quality of fattening Hu sheep. One hundred and twenty 3 to 4-month-old male fattening sheep with average body weight of 38 kg were randomly assigned to 4 groups with 5 replicates in each group 6 sheep in each replicate. The experiment was divided into two stages:early stage of fattening (1 to 60 d) and later stage of fattening (61 to 90 d), and the ratio of concentrate to roughage of basic diet were 60:40 and 75:25 during early stage of fattening and later stage of fattening, respectively. Sheep in the control group were fed a basal diet during whole stage of fattening (1 to 90 d); during early stage of fattening, sheep in experimental groups were fed the basal diet supplemented with 5 (group A), 10 (group B) and 20 g/d (group C) YC, respectively; during later stage of fattening, sheep in experimental groups were fed the basal diet supplemented with 10 (group A), 20 (group B) and 40 g/d (group C) YC, respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 90 days. The results showed as follows:1) during early stage of fattening, there was no significant difference in average daily gain among all groups (P>0.05); during later stage of fattening and whole stage of fattening, the average daily gain of group A was significantly higher than that of the control group (P<0.05), and the ratio of feed to gain was significantly lower than that of the control group (P<0.05). 2) There were no significant differences in live weight before slaughter, carcass weight, dressing percentage, eye area and GR value among all groups (P>0.05). 3) The kidney weight of group A was significantly higher than that of the control group (P<0.05), and there were no significant differences in heart, liver, lung and spleen weights and their percentages of live weight before slaughter among all groups (P>0.05). 4) There were no significant differences in rumen, reticulum, omasum and abomasum weights and their percentages of live weight before slaughter among all groups (P>0.05). 5) There were no significant differences in pH, drip loss rate and meat color among all groups (P>0.05). It is concluded that under this experimental condition, the supplementation of YC can not improve the slaughter performance and meat quality of fattening Hu sheep, diet supplemented with 10 g/d YC can increase the growth performance of Hu sheep during later stage of fattening.

Key words： fattening sheep; yeast culture; high-concentration diet; growth performance; slaughter performance; meat quality

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