Part I deals with principles of animal nutrition and feed technology which comprehensively covered about the proximate principles and estimation of common macro elements like calcium and phosphorus. It also includes about the cell wall fractionation and estimation of common toxic principles present in feeds. Part II deals with applied animal nutrition-I, where the feeding on ruminant animals specifically the cattle, buffalo, sheep and goats in their different physiological stages are discussed and requirements of different nutrients as well as formulation of their respective ration has been taken care of. Part III deals with applied animal nutrition-II, where the feeding on non-ruminant animals specifically the swine and poultry in their different physiological stages are discussed and requirements of different nutrients as well as formulation of their respective diet has been taken care of. In addition to that principles of mixing and compounding of feed has also been considered. The book is similarly useful for the post graduate students of animal sciences, teachers and scientists of animal nutrition discipline, personnel of feed industry involved in feed manufacturing and marketing, field veterinarian, animal husbandry extension worker and progressive animal farmers and animal lovers.