This text book is on the Dairy cow feeding by using cattle urine as Nitrogen source to facilitate the grain and Biomass yield of Maize. The book has been published on the basis of detail lecture notes which have been crucial for teaching learning process. It highlights, to acquire knowledge; skill and attitude for students as well as dairy owners. It acquaints students with basic principles of dairy cattle feeding to exploit the maximum milk yield based on the potential of the given cattle. It also describes the importance of colostrums feeding, whole milk, and its nutrient contents. It has depicted the importance of feeding dairy cow with maize as grain as well as biomass green fodder source; to do so farmers may not have a chance to get urea fertilizer as Nitrogen source instead they can get it from their cattle. The urine has ample source of nitrogen and can easily been absorbed by the plant and biomass yield could have been facilitated with in 60 to 70 days time and used for feeding dairy cows. It covers all necessary manage mental aspects of dairy cattle as well as milk production. Particularly as to how the feeding management to be conducted based on the genetic potentia