
Effect of enzyme preparation on egg production, nutrient retention, digestive enzyme activities and pancreatic enzyme messenger RNA expression of late-phase laying hens
Keywords: AMEn, nitrogen-corrected apparent metabolisable energy; BAEE, N-benzoyl-l-arginine ethyl ester; Ca, calcium; cDNA, complementary deoxyribonucleic acid; CTTAR, coefficient of total tract apparent retention; EE, ether extract; ES, enzyme supplementation; mR