ÜSTÜNER B, ALÇAY S, NUR Z, SAĞIRKAYA H, SOYLU MK. Effect of Egg Yolk and Soybean Lecithin on Tris-Based Extender in Post-Thaw Ram Semen Quality and in vitro Fertility. Kafkas Univ Vet Fak Derg, 20 (3): 393-398, 2014. DOI: 10.9775/kvfd.2013.10248