Journal of Agricultural Studies ISSN 2166-0379 2015, Vol. 3, No. 2 www.macrothink.org/jas 166 Extra-gonadal Sperm Reserve and Daily Sperm Production of Male Rabbits Fed Diets Supplemented with Cerium Oxide Ladipo, M. Kudi Department of Polymer and Textile Technology Yaba College of Technology, Lagos, Nigeria Sesan D. Oyefeso Department of Animal Production and Health Federal University of Technology, Akure, Nigeria Olufemi A. Adu Department of Animal Production and Health Federal University of Technology, Akure, Nigeria E-mail: oaadu@futa.edu.ng Iyabo W. Akinmuyisitan Department of Animal Science Adekunle Ajasin University, Akungba-Akoko, Nigeria Received: April 6, 2015 Accepted: April 21, 2015 doi:10.5296/jas.v3i2.7388 URL: http://dx.doi.org/10.5296/jas.v3i2.7388 Abstract In an 8-week feeding experiment, 32 growing buck rabbits (Oryctolagus cuniculus) of an average weight of 1366.56±37.54g, were used to assess the effects of inclusion of different