| 肉牛常见饲料干物质和蛋白质瘤胃降解特性和小肠消化率研究 |
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| 引用本文： | 宋 钰,夏志军,昝林森.肉牛常见饲料干物质和蛋白质瘤胃降解特性和小肠消化率研究[J].中国牛业科学,2020,46(4):11-15. |
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| 作者姓名： | 宋 钰 夏志军 昝林森 |
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| 作者单位： | 西北农林科技大学动物科技学院,陕西杨凌712100;西北农林科技大学动物科技学院,陕西杨凌712100;国家肉牛改良中心,陕西杨凌712100 |
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| 基金项目： | 国家重点研发计划（2018YFD0501700）、国家肉牛牦牛产业技术体系（CARS-37）、陕西省农业科技创新转化项目（NYKJ-2018-YL09） |
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| 摘 要： | 方法]选用装有瘤胃瘘管和小肠瘘管的肉牛作为试验动物,尼龙袋法测定肉牛常见饲料干物质(DM)和粗蛋白(CP)的瘤胃降解特性和小肠消化率。结果]结果表明,DM瘤胃有效降解率由高到低为玉米粉、麦麸、苜蓿干草、豆粕、菜籽粕、玉米青贮、醋糟、白酒糟;CP瘤胃有效降解率由高到低为苜蓿干草、麦麸、豆粕、醋糟、玉米粉、玉米青贮、菜籽粕、白酒糟;DM小肠消化率由高到低为豆粕、菜籽粕、玉米粉、白酒糟、醋糟、麦麸、苜蓿干草、玉米青贮;CP小肠消化率由高到低为豆粕、菜籽粕、玉米粉、苜蓿干草、麦麸、白酒糟、玉米青贮、醋糟。结论]试验表明,不同饲料瘤胃降解特性不同,为小肠提供过瘤胃可消化蛋白的能力不同,且饲料的DM小肠消化率小于CP小肠消化率。
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| 关 键 词： | 秦川肉牛 瘤胃降解特性 小肠消化率 |
| 收稿时间： | 2020/5/23 0:00:00 |
| 修稿时间： | 2020/5/23 0:00:00 |
Study on rumen degradation characteristics and intestinal digestibility of dry matter and protein in beef cattle feed |
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| Abstract: | Beef cattle equipped with rumen fistula and small intestine fistula were selected as test animals. The nylon bag method was used to determine the rumen degradation characteristics and small intestine digestibility of common feed dry matter (DM) and crude protein (CP) of beef cattle. The results show that the effective degradation rate of DM rumen from high to low is: corn flour, wheat bran, alfalfa hay, soybean meal, rapeseed meal, corn silage, vinegar grains, liquor grain; CP effective rumen degradation rate from high to low is: Hay, wheat bran, soybean meal, vinegar grains, corn flour, corn silage, rapeseed meal, white wine grains; DM small intestine digestibility from high to low: soybean meal, rapeseed meal, corn flour, white wine grains, vinegar grains, wheat bran , Alfalfa hay, corn silage; CP small intestine digestibility from high to low: soybean meal, rapeseed meal, corn meal, alfalfa hay, wheat bran, liquor grain, corn silage, vinegar grain. Tests show that different feeds have different rumen-degrading characteristics, different ability to provide rumen-digestable protein for the small intestine, and the DM small intestine digestibility of the feed is less than the CP small intestine digestibility. |
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| Keywords: | Qinchuan beef cattle Rumen degradation characteristics Intestinal digestibility |
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