Ani, A.O. and Okorie, A.U. 2021. Performance of broiler finishers fed graded levels of processed castor oil bean (Ricinus communis L) meal supplemented with DL-methionine . Nigerian Journal of Animal Production. 36, 1 (Jan. 2021), 61–73. DOI:https://doi.org/10.51791/njap.v36i1.1053.