The book contains 14 chapters covering all major issues of farm animal physiology. The authors set out the scientific foundations of the discipline, taking into account the modern requirements and achievements of this science, accumulated in recent years. For example, in the chapter "Digestion" the concept of parietal digestion in the intestine is given, in the chapter "Physiology of muscles and nerves" the data obtained by physiologists in recent years using the latest research methods are given. From a modern point of view, issues of blood coagulation, blood group, amino acid conversion scheme, protein synthesis, neuropsychiatric conditioning of reproduction and lactation, promotion and survival of sperm in the reproductive organs of females, features of bird reproduction, etc. are considered.