A comprehensive treatment of dairy cattle nutrition including an explanation of how plants synthesize nutrients, descriptions of common feeds, explanation of feed digestion processes, recommendations for feeding management practices for all classes of female dairy cattle and an explanation of the process of ration formulation. Recommendations incorporate those published in the 2021 edition of 'Nutrient Requirements of Dairy Cattle' published by the US National Academies of Science, Engineering and Medicine (NASEM). Numerous color photos, diagrams, graphs and tables enhance the text. Appendices provide tables of feed composition and nutrient requirements. An extensive index facilitates access to subject matter.