This book, in its third edition, has been completely revised giving latest information on poultry diseases including avian influenza. The basic syllabus pattern of Veterinary Council of India has been retained for students. Information on drugs, disinfectants, sanitisers and vaccines has been almost rewritten. Chapters on Laboratory Procedures has been revised and enlarged. Important chapters such as on Fungal Toxicosis, Marck`s Disease, Gumboro Disease, ...