Abstract
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.
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