Nicotinic Acid– vitamins requirements - Laying hens- performance

Elsherif, H. M. R., and K. G. El-Iraqi, "Nicotinic Acid Requirements For Brown Laying Hens at End Production Cycle Under Egyptian Conditions", Egyptian J. Nutrition and Feeds, vol. 22, issue 1, pp. 111-119, 2019. niacin_in_laying_hens_.pdf