王悦颖,张博琦,曹茂盛,陈通,李纯锦,周虚

• 1:吉林大学动物科学学院

摘要(Abstract)：

反刍动物对饲粮中氮的利用效率为25%左右，其效率的高低会受到许多因素影响，主要包括瘤胃微生物的结构及种类、遗传因素、尿素氮循环效率和饲粮蛋白质水平等。反刍动物的过量氮排泄不仅会造成饲粮蛋白质的浪费，更会造成环境污染。本文阐述了影响反刍动物氮利用及生产的因素，并对基于提高氮利用效率进而提高饲料效率的优化措施进行了总结，旨在为提高反刍动物氮素利用效率、降低饲养成本和减少环境污染提供方向。

关键词(KeyWords)： 瘤胃微生物;氮利用效率;尿素氮循环;反刍动物

Abstract:

Keywords:

基金项目(Foundation): 吉林省重点研发资助项目(20210202103NC,20210202048NC);; 长春市重点研发资助项目(21ZGN05)

作者(Author): 王悦颖,张博琦,曹茂盛,陈通,李纯锦,周虚

DOI: 10.16303/j.cnki.1005-4545.2023.12.31

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