TY - GEN AU - Ahmed Mohamed Fouad AU - Mamdouh Omar Abdelsamee , AU - Osama Mohamed Elhusseiny , TI - Response of laying hen perfomance to some dietary vitamins and minerals / PY - 2008/// CY - Cairo : PB - Ahmed Mohamed Fouad , KW - Laying hen KW - Niacin KW - Zinc N1 - Thesis(M.Sc.) - Cairo University - Faculty of Agriculture - Department of Animal Production; Issued also as CD N2 - This experiment was designed to evaluate the effect of supplemented zinc(ZN)and niacin(NIA)0n laying hen performance egg quality nutrient digestibilty and relative economical efficiency(EEF)from 28 to 43 weeks of age UR - http://172.23.153.220/th.pdf ER -