& et al., Saieed. 2018. “EFFECT OF ADDITION FROM EGG YOLK OF DIFFERENT AVIAN TO TRIS EXTENDER ON FREEZING SEMEN TRAITS OF AWASSI RAMS”. IRAQI JOURNAL OF AGRICULTURAL SCIENCES 49 (4). http://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/76.