Abstract: Food selection is one of the main research contents in nutritional ecology of ruminants. This review expounds the conceptsand several studying methodologies on food selection , and summarizes its major influencing factors such as features of animal morphology , nutritional quality of plants , physicochemical defense of plants , physiological features of animals , and characteristics of behaviors. The correlation and functional mechanisms of these factors comprise the basic research contents of this studying field.

Key words: Food selection, Ruminant, Influencing factors

摘要： 反食物选择是反刍动物营养生态学的重要研究内容之一。本文阐述了食物选择概念及几种计算方法, 概述性介绍了食物选择的主要影响因素。动物形态学特征、植物营养质量、植物物理和化学因素、动物自身生理特征、行为学特征是影响反刍动物食物选择的主要因素。这些因素间的相互关系及作用机理构成这一领域基本研究内容。

关键词: 食物选择, 反刍动物, 影响因素