中度盐碱化草地混播牧草替代玉米青贮对绵羊生产性能的影响

›› 2013, Vol. 21 ›› Issue (1): 202-206.

• 研究论文 • 上一篇

中度盐碱化草地混播牧草替代玉米青贮对绵羊生产性能的影响

朱慧森, 刘生强, 刘强, 董宽虎

山西农业大学动物科技学院, 山西太谷 030801

收稿日期:2012-06-10 修回日期:2012-11-25 出版日期:2013-02-15 发布日期:2013-02-27
通讯作者: 董宽虎
作者简介:朱慧森(1977-),女,山西晋中市人,副教授,博士,研究方向为牧草抗逆生理生态,E-mail:zhuhuisen@126.com;
基金资助:
"十一五"国家科技支撑计划课题(2007BAD56B01)资助

Effects of Grass-mixtures Cultivated in Moderate Alkali-Saline Grasslands on Performance of Sheep

ZHU Hui-sen, LIU Sheng-qiang, LIU Qiang, DONG Kuan-hu

College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China

Received:2012-06-10 Revised:2012-11-25 Online:2013-02-15 Published:2013-02-27

摘要/Abstract

摘要： 为研究中度盐碱化草地混播牧草对绵羊采食量、日增重和屠宰性能的影响,试验选用24只3月龄、体重(23.1±0.62) kg的德国肉用美利奴杂交一代绵羊,随机分为4组,对照组饲喂精料补充料+玉米(Zea mays)青贮,处理Ⅰ,Ⅱ和Ⅲ组在对照日粮基础上分别以中度盐碱化草地混播牧草(披碱草(Elymus dahuricus)、碱茅(Puccinellia distans)和沙打旺(Astragalus adsurgens))替代1/3,2/3 和3/3 玉米青贮,每只羊精料补充料日喂600 g,粗饲料自由采食。结果表明:处理Ⅰ,Ⅱ和Ⅲ组的有机物、干物质、酸性洗涤纤维、中性洗涤纤维采食量均显著高于对照组(P<0.05);处理Ⅰ和Ⅱ组的日增重虽略高于对照组,但差异不显著;处理Ⅱ和Ⅲ组的饲料转化率显著高于对照组;各处理组绵羊屠宰体重、胴体重、屠宰率、净肉率、胴体出肉率、肉骨比、眼肌面积均较对照显著提高(P<0.05)。因此,中度盐碱化草地混播牧草替代玉米青贮可以增加绵羊的采食量,提高绵羊的屠宰性能,并以处理Ⅰ和Ⅱ组的效果较理想。

关键词: 中度盐碱化草地, 混播牧草, 玉米青贮, 绵羊, 生产性能

Abstract: The effects of grass-mixtures cultivated in moderate alkali-saline grasslands on feed intake, average daily gain and slaughter performance of sheep were evaluated. Twenty-four first filial generations (F₁) sire of cross-breeds sheep (Chinese Inner Mongolian Fine-woolⅹGerman Mutton Merino) with 3-month-old and 23.1±0.62 kg body weight (BW) were randomly arranged into four groups. Concentrate supplement and corn silage were designed as control diet. Using the grass-mixtures of Elymus dahuricus, Puccinellia distans and Astragalus adsurgens cultivated in moderate alkali-saline grasslands as 1/3, 2/3 and 3/3 corn silage substitute base on control diet were designed as treatment Ⅰ, Ⅱ and Ⅲdiets. Sheep were fed 600 g daily plus adlibitum. Results showed that the organic matter intake, dry matter, acid detergent fiber and neutral detergent fiber of treatment Ⅱ sheep were significantly higher than that of control; The average daily gains of treatmentsⅠand Ⅱ sheep were higher than that of control; The feed conversion ratios of treatment Ⅱand Ⅲ sheep were significantly higher than that of control (P<0.05). The slaughter weight, dressing percentage, carcass weight, meat weigh, meat percentage, meat-carcass ratio, meat-bone ratio, and eye muscle area of sheep fed with grass mixtures of moderate alkali-saline grasslands were improved significantly compared with one fed with control diet (P<0.05). These results indicated that feed intake and slaughter performance could be improved when sheep fed with the mixed-grass of moderate alkali-saline grasslands substituting silage corn. Therefore, using the grass-mixtures of moderate alkali-saline grasslands as 1/3~2/3 corn silage substitute could obtain a better effect of production.

Key words: Moderate alkali-saline grassland, Mixed-grass, Corn silage, Sheep, Performance

中图分类号:

S816.32

朱慧森, 刘生强, 刘强, 董宽虎. 中度盐碱化草地混播牧草替代玉米青贮对绵羊生产性能的影响[J]. , 2013, 21(1): 202-206.

ZHU Hui-sen, LIU Sheng-qiang, LIU Qiang, DONG Kuan-hu. Effects of Grass-mixtures Cultivated in Moderate Alkali-Saline Grasslands on Performance of Sheep[J]. , 2013, 21(1): 202-206.

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中度盐碱化草地混播牧草替代玉米青贮对绵羊生产性能的影响

Effects of Grass-mixtures Cultivated in Moderate Alkali-Saline Grasslands on Performance of Sheep

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