Yoplac-Collantes, C., Leiva-Villanueva, Y.D. and Zamora-Huamán, S.J. 2022. Feed cost reduction in layer hens with rice by-products using exogenous enzymes. Revista Científica de la Facultad de Ciencias Veterinarias. 32, (Feb. 2022), 1-7. DOI:https://doi.org/10.52973/rcfcv-e32100.