Evaluation of the Effect of Different Concentrations of Vitamin E and Selenium in Tris Extender on Sperm Quality of Arabic Ram

The aim of this study was to evaluate the effect of levels of different vitamin E and selenium in tris extender on spermatozoa characteristics of Arabic ram. Semen collection was performed from 8 Arabic rams and mixed together. The mixed semen was divided in to 9 parts and after dilution with tris, different levels of selenium and vitamin E were added. This experiment was carried out in 3×3×4 factorial arrangement with the use of completely randomized design. Treatments were included the levels of vitamin E (0, 30 and 60 μg/ml), selenium (0, 2 and 4 μg/ml) and storage periods of semen (0, 2, 4 and 8 hours) in liquid condition under refrigerator temperature. The effects of vitamin E, selenium and storage time on spermatozoa quality were significant (P