Agricultural Extension Service, South Dakota State College
Dairy cows, in order to make milk in large quantities, must be supplied with liberal amounts of the raw material from which milk can be made. That means good feed. The average production of South Dakota milk cows for the year 1952 was 4170 pounds of milk and 156 pounds of butterfat. Much of this relativ~ly low production is due to poor feed and lack of enough feed. Production and feed records shown in Table IV - page 25 reveal that one way to get increased production is to give the cows more feed. Feed is the greatest single item of expense in producing milk. It accounts for about half the total yearly cost of keeping a cow.
Service, Agricultural Extension, "Feeding the Dairy Herd for Profit" (1954). SDSU Extension Circulars. 702.