A.S. Series 79-20
The current N.R.C. (1977) recommendations for lysine content of laying hen rations is 0.60%. This level of lysine is recommended along with 15% protein. The influence of protein level or protein quality on this requirement is not known. This experiment examined laying hen performance over a range (0.55% to 0.80%) of lysine levels in 10% and 12% protein diets to determine optimum lysine intake. Also, the influence of the addition of the amino acids isoleucine and tryptophan to the 10% protein diet was studied.
Number of Pages
Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Carey, J. B. and Carlson, C. W., "Performance of Laying Hens Fed Increasing Amounts of Lysine in Low Protein Diets" (1979). South Dakota Poultry Field Day Proceedings and Research Reports, 1979. 4.