非蛋白氮代替蛋白饲料在反刍动物日粮中的应用

Application of non-protein nitrogen as a substitute for protein feed in ruminant diets

蛋白质饲料资源短缺是我国畜牧业发展面临的重大困境,阻碍了畜牧业的提质增效发展。反刍动物可利用部分非蛋白氮(NPN)(如尿素、磷酸脲等)作为饲料氮源,降低饲用豆粕等植物蛋白的消耗,从而在一定程度上缓解蛋白质饲料资源短缺的现状,并有利于降低生产成本。本文主要围绕反刍动物利用NPN的原理、NPN的饲喂效果以及NPN替代豆粕的效益等进行综述,为进一步推动NPN的合理应用及豆粕减量替代提供科学依据。

The shortage of protein feed resources is a major challenge faced by China's animal husbandry development,and it also hinders the development of animal husbandry with quality and efficiency.Ruminants can use non-protein nitrogen(NPN)(such as urea,urea phosphate,etc.)as a feed nitrogen source to reduce the consumption of plant protein such as soybean meal,thereby,to a certain extent,alleviating the current situation of protein feed resource shortage and contributing to reduce feeding costs.This paper mainly focused on the principle of using NPN in ruminants,the feeding value of NPN and benefits of replacing soybean by NPN,in order to provide scientific foundation for further promoting the rational application of NPN and the reduction and substitution of soybean meal.