A.S. Series 76-3
Previous studies at the South Dakota Experiment Station showed that average hen-day egg production over fifteen 28-day periods was reduced from 70 to 67% when the protein content of the diet was lowered from 16 to 12%. Furthermore, the combined addition of methionine and lysine depressed production to 61%. Tryptophan appeared to somewhat alleviate the depression effect caused by methionine and lysine, whereas isoleucine did not further improve hen performance.
Number of Pages
Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Kashani, A. B. and Carlson, C. W., "Strain Effects With Low Protein Layer Diets" (1976). South Dakota Poultry Field Day Proceedings and Research Reports, 1976. 4.