The present textbook has been designed to serve as a valuable resource for elementary animal physiology courses offered at colleges of agriculture, zoology, veterinary and animal sciences. It is the aim of this textbook to provide a clear and concise explanation of the functioning of the various systems of domestic animals in all its chapters. Whenever deemed appropriate, the textbook has made use of examples from both human and non-domestic animals such as rats and rabbits. As a discipline, physiology has grown to encompass a wide range of topics.

The textbook delves deeply into the following areas: o The nature and scope of physiology o The composition and regulation of body fluids, including water, electrolytes, and acid-base balance o Respiration o Blood and the circulatory system o The structure and function of the kidney o The function of the rumen o Digestion and metabolism o Vitamins and minerals o The endocrine system and its secretions o Reproduction in males o Female reproduction o Lactation o The nervous system o The physiology of bone, skin, and special senses o The regulation of body temperature.

01: Nature and Scope of Physiology 02: Body Fluids: Water, Electrolyte and Acid Base Balance 03: Respiration 04: Blood 05: Circulatory System 06: Structure & Functions of the Kidney 07: Rumen Function 08: Digestion & Metabolism 09: Vitamins and Minerals 10: Endocrine Glands and Their Secretions 11: Reproduction in the Male 12: Female Reproduction 13: Lactation 14: Nervous System 15: Bone, Skin and Special Senses 16: Physiology of Temperature Regulation