S. Mukul Ray, S. Ghule, S. Muthukumar, A. Banik, and C. Maji, “Effects of Dietary Supplementation of a Single-and a Multi-Strain Probiotic on Growth Performance and Intestinal Histomorphology of Commercial Broiler Chickens”, Int. J. Poult. Sci., vol. 19, no. 8, pp. 363–371, Jul. 2020, doi: 10.3923/ijps.2020.363.371.