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The Relation of Age and Weight of Swine to Gains in Nutrients

University of Missouri^*

Abstract

The gains in protein by these animals were least costly up to a weight of 200 pounds. Gains in protein between the weights of 200 and 300 pounds were much more expensive. In gaining from 100 to 200 pounds, the pigs consumed about 34 pounds of feed while storing one pound of protein. In gaining from 100 to 300 pounds, the pigs consumed about 50 pounds of feed while storing one pound of protein.

The feed required to produce fat tended to decrease from the time the pigs weighed 100 pounds to the time when they weighed 300 pounds. During the interval represented by the weights 100 and 200 pounds, the pigs consumed about 11.5 pounds of feed while storing one pound of fat. During the interval corresponding to the weights 200 and 300 pounds, the pigs consumed about 10 pounds of feed while storing one pound of fat.

The amount of feed required to produce gains in energy was practically constant throughout the period.

^* This project is in charge of the Animal Husbandry Department, E. A. Trowbridge, L. A. Weaver, A. G. Hogan, and A. T. Edinger cooperating.