Daily egg number and egg weight, weekly feed intake, and monthly BW and egg quality parameters were in- dividually measured and recorded from 19 through 74 wk of age. Haugh unit values determined individual eggs using the procedure described by Haugh (1937). The flotation method (Hamilton, 1982) was used to de- termine specific gravity with a range of salt solutions from 1.065 to 1.095, with increments of 0.005. Eggs were then rinsed in cool water and broken open to determine yolk and shell weights. The mass of albumen was calculated as the difference in egg weight after the yolk and shell weights were obtained. Efficiency of feed utilization in this experiment was expressed as feed per kilogram of eggs and feed per dozen eggs by using the equations: