Table 4.

The effect of sulfur amino acids (SAA) supplementation on cloacal temperature and panting (measured 2 h after daily heat exposure on d 28, 31, and 35 and 1 h after end of heat stress [HS] for panting) broilers exposed to heat stress from 28 to 35 d of age.

Temperature program2	Diet
		Cloacal temperature			Panting
		28	31	35	32 d	32 d 1 h after HS	33d	33 d 1 h after HS
		_______________°C ________________			_______________________ % _______________________
TN		41.9b	41.9b	41.8b	6.66b	3.52b	2.13b	3.62b
HS		43.7a	43.3a	43.0a	95.53a	31.60a	91.57a	38.46a
Pooled SEM		0.07	0.06	0.04	2.51	2.68	1.72	2.72
	Normal DSAA	42.9	42.6	42.6	55.36a	18.84	47.86	19.00
	130% DSAA	42.7	42.5	42.5	46.82b	16.28	45.84	23.07
Pooled SEM		0.07	0.06	0.04	2.51	2.68	1.72	2.72
P valuec
Temperature		≤ 0.01	≤ 0.01	≤ 0.01	≤ 0.01	≤ 0.01	≤ 0.01	≤ 0.01
Diet		0.19	0.21	0.64	0.02	0.50	0.41	0.30
Temperature × Diet		0.15	0.65	0.64	0.91	0.75	0.37	0.86

¹Values are means from five birds per pen or whole pen from 9 replicate pens from each interaction or 18 per main effect.

²TN = continuous 22 to 24°C; HS received 33°C for 6 h and 27.7°C for the remaining 18 h daily.

^a-bValues in a column without common superscript letter are different (P ≤ 0.05)

^cBoldface indicates significant P-value.