Our graduating as well as graduate students felt need of a good book containing all the relevant information of various aspects of animal husbandry and biotechnology in a concise form that can be helpful in their preparation of various competitive examinations like JRF and Civil Services. We tried at our level best to provide all such informations in this book needed by students who are preparing for their life shaping competitions. This is one of the unique book of its type which included comprehensive knowledge of all constituents of animal science and biotechnology. We are thankful to all the authors of different kind of Veterinary, Animal Husbandry and Biotechnology books because visiting of those books only can provide materials for preparation of this book

Dr. Ajay Kumar Upadhyay born at District Azamgarh and did his pre-graduation schooling at Prestigious S.K. Inter College, popularly known as 'Khatri Pathshala' of Alalhabad that has a very rich galaxy of alumni. He did his graduation in the year 1986 from College of Veterinary Sciences, G.B. Pant University of Agriculture and Technology, Post graduation from Indian Veterinary Research Institute, Bareilly and Ph.D. work back from the graduating institute. He served the Department of Animal Husbandry during the year 1990 & 1991 and joined as Assistant Professor in December 1991 at the Department of Medicine, College of Veterinary Sciences, Pantnagar. He became Associate Professor in the Department of Epidemiology and Preventive Medicine in the year 2001. Now working as Professor and Head, Department of Veterinary Public Health and Epidemiology. He is member of 11 professional societies and authored more than 5 books and 6 manuals. He has earned several honours and awards related with professional work and fellow of Academy of Sciences for Animal Welfare. Dr. S. C. Tripathi, MVSc, Ph.D, is working as Professor in the Department of Veterinary and Animal Husbandry Extension Education, College of Veterinary & Animal Sciences, Pantnagar. He is having over 25 years of experience in teaching, research, extension and administration. Dr. Tripathi has published over 40 research and semi research papers in journals of national & international repute. He has contributed number ofpolicy papers and chapters in books and authored 8 proceedings. His proceedings "Food Safety Quality Assurance and Global Trade: Concerns & Strategies" published by IBDC Lucknow, fetch special attention of readers and policy planners. Dr Tripathi worked as technical advisor to Minister for Animal Husbandry & Fisheries, Uttar Pradesh as well as UP Poultry & Livestock Specialities Ltd., UP while working as Scientific Officer, U P Council of Agricultural Research (UP). Various awards and honours conferred to Dr. Tripathi include Late G.V. Narayana Khedkar Memorial Award-2002, Vigyan Bharti Appreciation Award-2000 and Pashu Mitra Award-1999. Dr. R.J. Sharma born on July 5, 1948 in village Rampur of Aligarh district in U.P. He began his professional Journey in Veterinary Sciences in 1966 to earn B. V.Sc. & A.H. degree he obtained M.V.Sc. and Ph.D. degrees in Animal Genetics and Breeding in 1972 and 1983, respectively. He joined as Veterinary Assistant Surgeon from January 1970 to July 1970 in Animal Husbandry Department, U.P. He served G.B. Pant University of Agriculture & Technology from February 1972 to March 1974 as Assistant Extension Specialist from March 1974 to March 1986 as Subject Matter' Specialist and from March 1986 to October 1996 as Associate Professor and then as Professor and Head of the department of LPM from August 2002 to July 2005. He remained as Joint Director, IDF and IPF. He was adorned as Dean, College of Veterinary and Animal Sciences from August, 2005 to July, 2008 and rendered matchless leadership. He handled 26 research projects and successfully guided 8 Post Graduate and 3 Ph. D. students. He has published more than 40 research papers and 120 Hindi articles in national and international journals of repute. He authored 5 books, 6 booklets, 10 chapters, 60 leaflets and folders and 7 laboratory manuals. He was awarded Dr. Rajendra Prasad Award in 1985 and 1987 for his popular books, which are frequently referred by the students and researchers.