Table 1.

Growth performance of broiler chickens raised under thermoneutral zone (TN) or heat stress (HS) conditions from 21 to 35 days of age

Itemsa	Conditionb		SEMc	P-value
	TN	HS
Final BW, g	2182	1862	37.4	< 0.01
BWG, g	1521	1201	37.1	< 0.01
FI, g	2391	2183	52.5	< 0.05
FE, g/kg	639	550	0.015	< 0.01

Data are least squares means of 10 observations per treatment (n = 10)

^aBW, body weight, BWG, BW gain; FI, feed intake; FE, feed efficiency (BWG:FI)

^bTN, thermoneutral; HS, heat stress

^cSEM, standard error of the mean