Milián, G., Rodríguez, M., Dias, D., Rondón, A.I., Pérez, M.L., Bocourt, R., Portilla, Y. and Beruvides, A. 2019. Evaluation of the zootechnical additive SUBTILPROBIO® C-31 on feeding of laying hens in a commercial production unit. Cuban Journal of Agricultural Science. 53, 2 (Jun. 2019).