Yousefi, M., and K. Karkoodi. “Effect of Probiotic Thepax® And Saccharomyces Cerevisiae Supplementation on Performance and Egg Quality of Laying Hens”. International Journal of Poultry Science 6, no. 1 (December 15, 2006): 52–54. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/709.