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The Effect of Prolonged Maintenance on Subsequent Growth and Development in Pigs, 1921–22

Utah Agricultural Experiment Station

Abstract

The object of the test is stated in the title.

Animals.—Thirty spring pigs between 5 and 7 weeks old were divided into three groups as nearly uniform as possible considering size, sex, and general vigor.

Plan.—Lot I was put immediately on a self-feeder containing tankage, wheat shorts, and ground corn in separate compartments. Lots II and III were given similar feeds, but only in sufficient quantity to maintain them at constant body weight. Water was available at all times and salt fed every few days. The proportion of the feeds given Lots II and III was at first arbitrarily set as follows: Tankage 10 parts, shorts 60 parts, and ground corn 30 parts, by weight. For the third week this was changed to tankage 20 parts, shorts 60 parts, and ground corn 50 parts. At the end of three weeks the quantities of feed consumed by Lot I on the self-feeder, where they had had free choice in the three feeds, were determined.