QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Miller, R. C. Articles by Keith, T. B. Search for Related Content PubMed Articles by Miller, R. C. Articles by Keith, T. B.

The Optimum Level of Protein Intake for the Growth and Fattening of Swine¹

Department of Agricultural and Biological Chemistry and Department of Animal Husbandry, Pennsylvania State College, State College

The optimum quantity of protein in the ration for pigs for the growth span from 40 to 210 pounds was found to be from 15 to 17%. Levels of protein of 20, 22, 25 and 27% were not outstanding in their superiority to the 15 and 17% levels, but the trend of the results favored the higher levels of protein intake for pigs from weaning up to a weight of approximately 75 pounds. The lower levels of protein intake were superior to the higher levels for pigs between the weights of 120 and 200 pounds. Rations containing 10 and 12% of protein were unsatisfactory.

Authorized for publication on October 23, 1940, as paper no. 996 in the Journal Series of the Pennsylvania Agricultural Experiment Station.

Manuscript received 26 October 1940.