Majeed, N.T. and Razouqi, A.J. 2020. Effect of Supplementation of Zinc Methionine in Productive Performance and Eggs Quality Traits Laying Hens. Journal of agricultural, environmental and veterinary sciences. 4, 1 (Mar. 2020), 42–30. DOI:https://doi.org/10.26389/AJSRP.N211019.