Assis, Saullo Diogo, et al. “Relative Weight and Length of Digestive Tract and Intestinal Histomorphometric Measurements of Slow-Growing Broilers of Different Genotypes”. Semina: Ciências Agrárias, vol. 42, no. 1, Jan. 2021, pp. 319-34, doi:10.5433/1679-0359.2021v42n1p319.