Table 3 External egg quality (shell strength and shell thickness) under high temperature condition (30°C, 80±2% RH) during storage

Factor	Treatment	Storage duration (d)
		0	7	14	21
Eggshell strength (kg/cm2)	Control	2.72±0.23	2.49±0.30	2.85±0.32	3.11±0.16
	UV+washing	3.14±0.28	2.98±0.20	3.07±0.24	3.16±0.15
	ClO2(g) 40 ppm	3.06±0.28	3.07±0.41	3.13±0.13	3.15±0.20
Eggshell thickness (mm × 100)	Control	0.40±0.02	0.04±0.01	0.42±0.00	0.40±0.01
	UV+washing	0.39±0.01	0.41±0.01	0.39±0.01	0.40±0.01
	ClO2(g) 40 ppm	0.39±0.01	0.41±0.01	0.39±0.01	0.40±0.00

All data expressed as mean±SEM.