Table 2 Effects of age of laying hens on egg weight, Haugh unit and yolk color

Weeks Egg weight (g) Haugh unit Yolk color, R.C.F.1
18∼25 58.0±5.53c 97.3±3.56a 5.85±1.37b
25∼35 62.3±3.14b 93.9±2.75b 6.81±1.72a
36∼45 64.2±1.30a 90.5±3.97c 6.35±1.49ab
46∼55 64.1±1.51a 86.8±4.04d 6.03±1.47ab
56∼65 64.7±1.53a 82.7±6.69e 6.19±1.67ab
a∼e Means(±S.D.) having different superscripts within the same column differ significantly (P<0.05).
1R.C.F. = Roche yolk color fan.