Measurements
Records of daily feed intake and weight gain were obtained during 5-42 d
period. Feed conversion ratio was also calculated and corrected for mortality body
weights. At 42 days of age, 8 birds per treatment were selected for blood collection.
Blood samples (3 mL) were collected from the brachial vein and centrifuged at
2,500 × g for 10 min to obtain sera. Serum samples were used for the determination