of the Cobb 500 (slow-feathering) broiler strain, despite
the importance of this strain in worldwide poultry meat
production.
The objective of this study was to determine the optimal
digestible Val/Lys ratio for male Cobb × Cobb
500 broilers that were fed diets based on corn, soybean
meal, and sorghum. These birds received 10.7 and 9.40
g/kg of digestible lysine at ages 8 to 21 d and 30 to 42
d, respectively.