Effect of selenium supplementation on glutathione peroxidase (GPX), 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. Three-weeks- old 240 Aseel chickens (120 male and 120 female) from Lakha, Mushki, Peshaweri and Mianwali varieties were randomly distributed into four groups; 60 birds/variety (30 male and 30 female). 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 (T-4) 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.