Rosales Jaramill, C.A., Rodas Carpi, E.R., Nieto Escandón, P.E., Torres Inga, C.S., Gordillo Guambana, B.G., Aucapiña, C. y Marín, D. 2018. Removal of Penile Spicules of Covies (Cavia porcellus) and its Effect on Weight Gain and Aggressiveness. Revista de Producción Animal. 30, 1 (jun. 2018), 44-48.