Thomaz, M. C., Silveira, A. C., Kronka, R. N., Nakaghi, L. S. O., & BudiƱo, F. E. L. (2011). Sources of protein and slaughtering ages on the structure and ultra structure of the small intestine of weaned piglets. Brazilian Journal of Veterinary Research and Animal Science, 48(5), 408-418. https://doi.org/10.11606/S1413-95962011000500008