Dairy farming in India is coming in a big way from traditional style to highly mechanized way. Presently, India has the largest bovine population with 1924.9 lakh cattle and 1098.5 lakh buffaloes and also ranked number one in milk production in the world. Nutrition being axis of dairy, play pivotal role in profitability of farm us it influence production, reproduction and prevent diseases either directly or indirectly through boosting immunity to fight with diseases causing organism. In Present scenario, role of nutrition as whole and nutrient as individual goes much beyond the simple growth and milk production to a level of immune-modulation, disease prevention and disease treatment (Nutraceutical) Keeping this changing role of nutrition, the present book is written to aware the stakeholders about the clinically applicable nutritional advice in ruminant production. This book primarily covers the metabolic disorders, nutrition-reproduction nexus, nutritional deficiencies and toxicities, Laminitis, nutrigenomics and certain miscellaneous disease in relation to nutrition. The foundation and science behind these recommendations is briefly explained providing the reader with extensive references for further reading if desired. We envision this text to be a resource for budding Veterinarians, Practitioners. Clinicians, Academicians and ruminant’s Nutritionists. Contents: About Author Content Section –I: General Introduction Animal Nutrition and Ruminant Health – An Overview Section-II: Nutrition –Metabolic Disorders Milk Fever Ketosis Rumen Acidosis Rumen Alkalosis Bloat Abomasal Displacement Fatty Liver Ruminal Indigestion Section-III: Nutrition –Reproduction Inter-relationship Nutrition and Infertility Abortions Due to Nutritional Deficiencies Pregnancy Toxemia Section –IV: Anti nutritional Factors – A Clinical Perspective Nutritional Toxicities Antinutritional Factors and its Clinic Manifestations Section –V: Nutritional Deficiencies Common Mineral Deficiencies in Ruminants Common Vitamin Deficiencies in Ruminants Section –VI: Other Diseases in Relation to Nutrition Calf Diarrhoea Urinary Calculi Mastitis Bovine Laminitis Nutritional Anaemia Mycotoxicosis Section – VII: Immune System and Nutrition Nutrition and Immunity Table for normal biochemical indices of ruminants