Twelve diets were arranged in a 3 × 4 factorial of 3 levels Ca (at 0.5, 0.7, or 0.9%) and 4 levels NPP (at 0.25, 0.31, 0.38, or 0.45%) with a high dose of phytase (1,150 U/kg) in all diets
Twelve diets were arranged in a 3 × 4factorial of 3 levels Ca (at 0.5, 0.7, or 0.9%) and 4 levelsNPP (at 0.25, 0.31, 0.38, or 0.45%) with a high doseof phytase (1,150 U/kg) in all diets