Galal A, El-Motaal AA, Ahmed A, Zaki T. Productive Performance and Immune Response of Laying Hens as Affected by Dietary Propolis Supplementation. Int. J. Poult. Sci. [Internet]. 2008 Feb. 15 [cited 2025 Sep. 22];7(3):272–278. Available from: https://ijpsjournal.org/index.php/ijps/article/view/942