Correct feeding is one of the most important factors in the production of colts. Feed is the largest single item of expense, and any reduction that can be made in the amount required to grow colts to working age is of economic importance to the farmer.

During the period 1929-1930 prices of common feeds were extremely high, and as a consequence the cost of producing colts was increasing. Horse breeders had long since learned from experience that scant feeding of colts was not economical when the ultimate results were considered. The poorly fed colt was slow maturing, undersized and its usefulness for work may have been affected.

The question of preparing feeds in an effort to reduce feed requirements per 100 pounds of gain or increase the rate of gain on a given amount of feed is considered to be important by farmers.

When grinding is practiced horsemen generally coarse-grind all feeds that are prepared for horses. Finely ground feeds seem difficult for horses to digest, and the finer feeds are ground the more power that is required and the greater the cost.