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Organic and inorganic selenium in Aseel chicken diets: Effect on production performance

SUMMARY The present study was planned to explore the effects of different selenium‐supplemented diets on production performance in 4 varieties of Aseel chicken, including Lakha (LK), Mushki (MS), Peshawari (PW), and Mianwali (MW). The selenium (Se) from Se‐enriched yeast (SY) and sodium selenite (SS) was supplemented into a corn‐soybean meal basal diet at 0.3 mg/kg, whereas control diet had no supplemental Se. In total, 84 adult molted Aseel hens (50 wk old), 21 from each variety, were randomly assigned to 12 treatment groups in a 3 × 4 factorial arrangement of 3 Se diets (organic, inorganic, and control) and 4 Aseel varieties (LK, MS, PW, and MW), under a randomized complete block design (RCBD). Each treatment had 7 replicates with individual hens per replicate. Feed intake (FI), body weight (BW), egg production (EP), egg weight (EW), egg mass (EM), FCR/dozen eggs, and FCR/kg egg mass parameters were evaluated. The results indicated that the hens fed organic Se‐supplemented diet showed greater (P < 0.05) EP and EM, and improved (P < 0.05) FCR/dozen eggs and FCR/kg egg mass compared with those fed inorganic and without Se. Among varieties, MW hens showed greater (P < 0.05) BW and produced heavier (P < 0.05) eggs, whereas PW hens showed improved (P < 0.05) FCR/dozen eggs compared with those of other Aseel varieties. In conclusion, dietary supplementation of Se‐enriched yeast, as an organic Se source, could be used to ameliorate the poor production performance of Aseel chicken.