the aim of the present study was to determine the appropriate standardized ileal digestible lysine requirement to 49 day of olds in male but,6 turkey poults. experiment 1 and 2 were used from 8-28 and 28-49 d-old respectively. one hundred sixty male but,6 turkeys in each experiment were used in a completely randomized design with eight treatments (8 levels of standardized ileal digestible lysi...