Reduction of guinea pig food costs (Cavia porcellus L.) by distribution of fodders supplemented by fish meal or/and corn kernels during the reproductive cycle ABSTRACTSupplementing Panicum maximum Jacq. with pelleted rabbit concentrate feed has the advantage of inducing better productivity in domestic cavies, but having the disadvantage of being relatively expensive. In order to reduce feed expenses for the production of cavy carcass, four diets: Panicum maximum and Euphorbia heterophylla L. associated with maize kernels (PEM), or associated with fish meal (PEF), or associated with a mix of fish meal and maize kernels (PEMF); and P. maximum associated with rabbit pellets (PG; control diet), KOUAKOU et Y.B.S. BROU / Int. J. Biol. Chem. Sci. 10(3): 1199-1209 1200 were distributed ad libitum to 24 multiparous female cavies during gestation and lactation. The rates of fecundity, individual birth weight, and weight gain during lactation of the kids were 83, 100, 167 and 200%; 71±14, 88±18, 98±17 and 104±10 g; and 5±1, 6±1, 7±1 and 8±1 g.d -1 , respectively, for PEM, PEF, PEMF and PG diets. Results of this study indicated that P. maximum and E. heterophylla supplemented with fish meal (PEF) could be an optimal solution in rural areas with a reduction of 55% of feed expenses compared to PG.