Additionally, following egg weight, albumen height, Haugh unit, and yolk color measurements at these times, 6 out of the 12 eggs were separated into parts for determination of component yields by procedures previously described by Suk and Park (2001), with several modifications. Briefly, this was done by separating the yolk from the albumen, removing the chalazae from the yolk using forceps, and rolling the yolk on a paper towel to remove any adhering albumen prior to weighing the yolk. The interior of the shell was wiped out with a tissue to remove residual albumen before weighing the shell. Albumen weight was determined by subtracting yolk plus shell weight from total egg weight. At 24, 28, 32, and 36 wk, egg weights were recorded using a digital balance, and egg-specific gravity was determined using saline solutions with densities ranging from 1.060 to 0.095 at 0.005 intervals (Bennett, 1993).