Table 2. Comparison of survival rate (%) of hatched chickens in summer and winter from birth to 40 wks

Hatched	Growing period (0~15 wks)	Laying period (16~40 wks)	Total (0~40 wks)
Summer	89.26±5.78	97.13±2.72**	86.77±5.75**
Winter	89.01±6.79	75.07±18.17	82.23±10.19

-Values are means±standard deviation.
Values in the same column are significantly different (P<0.01).