| 奶牛常用蛋白质饲料和粗饲料的瘤胃降解特性研究 |
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| 引用本文： | 王吉东,周春元,吕佳颖,姚琨,李胜利.奶牛常用蛋白质饲料和粗饲料的瘤胃降解特性研究[J].动物营养学报,2022,34(2):1000-1013. |
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| 作者姓名： | 王吉东 周春元 吕佳颖 姚琨 李胜利 |
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| 作者单位： | 中国农业大学动物科学技术学院,北京 100193;天津嘉立荷饲料有限公司,天津 301800 |
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| 基金项目： | 现代农业(奶牛)产业技术体系建设专项资金资助(CARS-36);中国农业大学2115人才工程资助。 |
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| 摘 要： | 本研究旨在评定不同蛋白质饲料(豆粕、双低菜籽粕、膨化大豆、玉米蛋白粉、棉籽粕)和粗饲料(苜蓿干草、全株玉米青贮、燕麦草、苜蓿青贮、羊草)的营养价值,并研究其奶牛瘤胃降解特性.选择5头安装永久性瘤胃瘘管的健康荷斯坦牛,采用尼龙袋评定法评定饲料瘤胃有效降解率和动态降解率.结果表明:1)各蛋白质饲料干物质(DM)含量差异不显...
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| 关 键 词： | 蛋白质饲料 粗饲料 瘤胃 降解特性 |
Rumen Degradation Characteristics of Common Protein Feeds and Roughages of Dairy Cows |
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| WANG Jidong,ZHOU Chunyuan,LYU Jiaying,YAO Kun,LI Shengli.Rumen Degradation Characteristics of Common Protein Feeds and Roughages of Dairy Cows[J].Acta Zoonutrimenta Sinica,2022,34(2):1000-1013. |
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| Authors: | WANG Jidong ZHOU Chunyuan LYU Jiaying YAO Kun LI Shengli |
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| Institution: | (College of Animal Science and Technology,China Agricultural University,Beijing 100193,China;Tianjin Jialihe Feed Co.,Ltd.,Tianjin 301800,China) |
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| Abstract: | The objective of this study was to evaluate nutritional value of different protein feeds(soybean meal,canola meal,expanded soybean,corn gluten meal and cottonseed meal)and roughages(alfalfa hay,whole corn silage,oat hay,alfalfa silage and Leymus chinensis),and to study their rumen degradation characteristics. Five healthy Holstein cows fitted with permanent rumen fistulas were used to evaluated rumen effective degradability and dynamic degradability of feeds by nylon bag method. The results showed as follows:1)there was no significant difference in dry matter(DM)content among 5 protein feeds(P>0.05),the crude protein(CP)content of corn gluten meal was significantly higher than that of other protein feeds(P<0.05). 2)The DM content of alfalfa silage and whole corn silage was significantly lower than that of other roughages(P<0.05),the CP content of alfalfa hay and alfalfa silage was significantly higher than that of other roughages(P<0.05),the neutral detergent fiber(NDF)content of alfalfa hay and alfalfa silage was significantly lower than that of other roughages(P<0.05),and the acid detergent fiber(NDF)content of alfalfa hay,alfalfa silage and whole corn silage was significantly lower than that of other roughages(P<0.05). 3)The DM effective degradability of soybean meal was significantly higher than that of other protein feeds(P<0.05),and the CP effective degradability of corn gluten meal was significantly lower than that of other protein feeds(P <0.05). 4)The DM effective degradability of alfalfa hay,oat hay and alfalfa silage was significantly higher than that of other roughages(P<0.05),the CP effective degradability of alfalfa hay was significantly higher than that of other roughages(P<0.05),the NDF and ADF effective degradability of Leymus chinensis was significantly lower than that of other roughages(P<0.05),and the ADF effective degradability of whole corn silage and alfalfa hay was significantly lower than that of other roughages(P<0.05). In conclusion,in protein feeds,the DM effective degradability of soybean meal is the highest,and the CP effective degradability of corn gluten meal is the lowest;in roughages,the alfalfa hay and alfalfa silage are easier to digest in the rumen of dairy cows,the whole corn silage not only provides the NDF and ADF,and the NDF and ADF effective degradability is higher.Chinese Journal of Animal Nutrition,2022,34(2):1000-1013] |
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| Keywords: | protein feeds roughages rumen degradation characteristics |
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