Effect of selenium supplementation on glutathione peroxidase (GP_X), cholesterol, thyroxin (T₄) and other blood biochemicals in local Aseel

The aim of study was to determine the impact of different selenium sources on blood biochemical picture of Aseel. Threeweeks-old 240 Aseel chickens (120 ♂ and 120 ♀) from Lakha, Mushki, Peshaweri and Mianwali varieties were randomly distributed into four groups; 60 birds/variety(30 ♂ and 30 ♀). The birds of each group of either sex were further subdivided into A, B (experimental) and C (control) treatment groups with 10 birds each. Group A and B were fed the diet containing 0.3 mg/kg Se-yeast and sodium selenite, respectively, while group C was fed diet without selenium (control diet). Birds were maintained individually in cages from 4 to 21 weeks. In blood serum, glutathione peroxidase (GPx) levels increased (P≤0.05) while, total cholesterol and thyroxin (T₄) levels decreased (P≤0.05) in Se-yeast supplemented group than sodium selenite supplemented or control group. The study concluded that Se-yeast gave the superior performance to improve blood biochemical profile of Aseel.