Contents: 1. The animal and its feed. 2. Categories of animal feeds. 3. Importance of nutrients. 4. Digestion. 5. Digestibility determination of feeds. 6. Expressing the energy value of feeds. 7. Partition of energy. 8. Expressing the protein value of feeds. 9. Feeding standards. 10. Fasting heat production. 11. Animal growth and nutrition. 12. Lactation. 13 Examining dairy farm management closely. 14. Feed technology. The field of animal nutrition and feed technology has moved forward at an accelerated pace year by year. The present book is a result of the author’s long experience in the field whereby which the information documented has been presented in a simple, illustrative and lucid manner keeping in the mind the level of the readers. Less important information has been eliminated, while the general framework, character and flavour of the literature have been preserved, the text presents the animal nutrition and feed technology in an updated manner with the interpretation for the theory in practical manner.