Practical learning helps students attain an in-depth knowledge of the field of their interest. Therefore, understanding the practical aspects of animal nutrition and feed technology is very important for students to become familiar with the different aspects of animal nutrition. This practical manual on “Principle of Animals Nutrition and Feed Technology,” authored and compiled by “Vinod Kumar, Muneendra Kumar, Raju Kushwaha, Shalini Vaswani, and Avinash Kumar, has been designed to meet the needs of B.V.Sc. & A.H. and PG students, research scholars, teachers, and scientists involved in animal nutrition. The practical in this manualrepresents an attempt to summarise and consolidate a considerable amount of information relative to the general precautions while working in a nutrition laboratory. Familiarisation with various feeds and fodders used in the feeding of animals, preparation and processing of samples of feedstuffs for chemical analysis. This manual gives detailed insight into the approximate or Weende System of feed and fodder analysis, such as estimation of dry matter (DM), total ash, acid insoluble ash (AIA), crude protein (CP), ether extract (EE), crude fibre (CF), and nitrogen free extract (NFE) in feed samples. This manual provides detailed principles and procedures for the estimation of calcium (Ca) and phosphorus (P) in feed and fodder samples. This manual also provides detailed information regarding the determination of the fibre fraction by using detergent methods of forage analysis and the qualitative detection of undesirable constituents and common adulterants in feed. Each section of the manual provides a structured approach to learning by covering the topics in a uniform and systematic format.