The effects of probiotics on the performance, egg quality and blood parameters of laying hens: A meta-analysis

Abstract

1. Abd Elhalim H.S., Attia F.A.M., Hanafy A.M., Khalil H.A., 2007. Effects of probiotic (Biogen) and zinc bacitracin supplementation on laying hen performance, some blood parameters and egg quality. Agric. Res. J. 7, 11−19. Google Scholar