Dairy cow herd health is an important and universal topic in large animal veterinary practice and farming, covering both preventive medicine and health promotion. With the move towards large scale farming, the health of the herd is important as an economic unit and to promote the health of the individuals within it. This book focuses on diseases within herds, herd husbandry practices, youngstock management and environmental issues. Major diseases and conditions are included, such as mastitis, lameness, and nutrition, as well as metabolic and common infectious diseases from a herd health perspective.