Reis et al. [5] showed that eggs incubated
on the day of lay (fresh eggs) tended to hatch
later than stored eggs and produced heavier
chicks. However, the factors that control chick
quality have not been clearly defined. Because
chick hatching weight may not describe the
quality, we recently proposed a new method
for determining chick quality based on several
scored qualitative parameters and used it to
determine quality [9].