Data collection
Egg production was monitored on daily basis and number of eggs collected for each replicate was used in calculation for hen day production. Egg weight was estimated with the aid of a sensitive weighing scale. Feed intake and feed conversion were also determined on a replicate basis. A total of 240 eggs with 12 eggs per treatment selected each week for 4 weeks for egg quality assessment. Yolk index was expressed as a ratio of yolk length and yolk height.