Table 6.

Effects of strain and temperature on caecal Lactobacilli, Escherichia coli, and Clostridia populations in broiler chickens at 35 days of age

Variable	Strain		SEM	Temp1)		SEM	p-value
	Cobb 500	Ross 308		Normal	Heat stress		Strain	Temp	Strain×Temp
Lactobacilli (log10 cfu/g)	6.69	6.73	0.54	6.63	6.79	0.53	0.694	0.147	0.882
Escherichia coli (log10 cfu/g)	5.80	5.79	0.71	5.83	5.76	0.71	0.922	0.643	0.593
Clostridia (log10 cfu/g)	7.42	7.49	0.60	7.54	7.38	0.59	0.503	0.194	0.759

SEM, standard error of the mean for main effects (n = 24); Temp, temperature.

¹⁾The heat stressed birds were exposed to 34°C for 6 h daily.