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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. [ABSTRACT FROM AUTHOR]

Two hundred-forty 3-weeks-old Aseel birds from Lakha, Mushki, Peshaweri and Mianwali varieties of indigenous Aseel were chosen (60 birds/variety, 30 males and 30 females) to evaluate the influence of selenium supplements on growth performance. The birds of either sex were divided according to randomized complete block design into A, B and C treatment groups (10 birds/treatment); A and B were experimental, while C was control. Se-enriched yeast (organic selenium) and sodium selenite (inorganic selenium) were supplemented @ 0.3 mg/kg in the basal diets of group A and B, respectively, while, group C was fed without additional selenium. Birds were maintained individually in battery cages from 4-21 weeks. Statistically, the results showed the reduced (P>0.05) feed intake, while enhanced (P≤0.05) nutrient utilization for dry matter, crude protein, crude fiber, crude fat and ash; superior feed conversion ratio; higher live final body weight; lower (P≤0.05) mortality and rearing cost in Se-enriched yeast fed birds, chiefly in the males of Lakha variety than those received sodium selenite supplemented or control diet. The study concluded that the organic selenium supplement (Se-enriched yeast) had a major influence in improving the overall growth performance of Aseel. [ABSTRACT FROM AUTHOR]