علی اصغر بهاری

The trial was conducted to evaluate the effects of different sources of selenium supplements on Hematological metabolites in fattening Mehraban lambs. The trial experiment consisted of 18 lambs, 4-5 months of age and 35.7±2.6 kg average in weight randomly allotted to 3 treatments. Treatments were: 1) Control diet (a diet without selenium, containing 0.06 mg/kg of selenium), 2) Control diet + 0.4 mg/kg Se as selenium yeast (0.4SeY), and 3) Control diet + 0.4 mg/kg Se as sodium selenite (0.4SeS). This trial lasted for 70 days. Blood samples were taken on days 0, 35 and 70. The trial were carried out as a completely randomized design. Supplementations of selenium to diet did not have significant effect on lambs hematological parameter (p>0.05). Although selenium supplementation increased blood GPX activity compared to control group (p<0.05). Overall, It may be concluded that 0.4 mg/kg selenium supplementation as organic and inorganic forms had no significant effects on Hematological parameters in Mehraban lambs. Keywords: Lamb - Selenium - Hematology