Palabras claves: Antibiotics, gastrointestinal tract, Intestinal villi, Natural feed additive, Proximal depth
Autores: Antonio-Hurtado E., Bravo-Loor J.D., Campozano-Marcillo G.A., Carlos Aníbal Bulnes-Goicochea, Cristina Korin Solórzano Macías, Valeria Lisseth Bazurto-Vera