Table 2. The effects of temperature, relative humidity, and temperature-humidity index (THI) on actual laying rate in Korean indigenous chickens

Factors	Classification	N	Laying rate
Temperature	<11°C	288	33.66±19.41^a
	11~26°C	240	33.36±21.48^a
	>26°C	96	29.34±19.50^b
Relative humidity	40~60%	160	32.24±21.92^b
	60~80%	344	33.91±19.75^a
	80~100%	120	30.64±19.08^c
THI	30~39	72	35.26±21.25^ab
	40~49	104	35.84±20.57^a
	50~59	152	34.77±21.45^ab
	60~69	128	31.39±18.94^b
	70~79	136	31.83±18.5^ab
	80~89	32	25.93±20.61^c

The different letters of superscript within the column significantly differ (P<0.01).