饱和链烷烃技术测定放牧动物营养状况的几个关键问题

Key Problems on Determination Nutritional Status of Grazing Animals

针对利用饱和链烷烃技术测定放牧动物日粮组成和采食量,评价放牧动物营养状况时存在的几个易忽视的关键问题,即:日粮代表性样品获取、链烷烃缓释胶囊实际释放率、粪便中偶数外源指示剂(偶数碳原子烷烃)本底值、链烷烃粪便回收率测定的必要性和适宜方法,以及日粮组分链烷烃浓度模式主成分分析的必要性进行了综述,以期为链烷烃技术在放牧草食动物营养与生态研究中准确恰当的应用提供依据。

N-alkenes-determination techniques are used to identify diet composition,feed intake,and to evaluate nutritional status of grazing animals.This article summarizes the sampling of representative diet,actual releasing rate of alkenes control release capsule,the background value of even n-alkenes in feces,the necessity and suitable methods of measuring fecal recovery of n-alkenes and principle component analysis of diet components n-alkenes patterns which are important and easy to be ignored in this field.The basis of applying n-alkenes technique for studying grazing animal nutrition and ecology accurately is provided.