A practical guide for dairy farmers that focuses on applying scientific findings to profitable milk production. It compares intensive and by-product dairying, outlines desirable dairy type and sire selection, and gives detailed feeding principles (chemical analyses, balanced rations, pastures, hay, silage, and prepared feeds) plus feeding techniques for cows, calves, and heifers. The book covers milk testing, barn construction, milking methods, processing of milk products, sanitation and market requirements, and reports on on-farm experiments and differing viewpoints, emphasizing essential, business-oriented recommendations over technical research.