Table 2.

Spearman correlations for Salmonella and Campylobacter loads^a in different sample types collected from 55 broiler chicken flocks

Sample type	Environmental farm samples				Processing plant carcass rinses
	Boot sock	Drag swab	Fecal sample	Litter sample	Outside plant	Rehang	Prechill	Postchill
Environmental farm samples
Boot sock		0.33*	0.36**	0.49***	0.42**	0.28*	0.28*	0.28*
Drag swab	0.87***		0.45***	0.38**	0.11	0.22	0.28*	0.19
Fecal sample	0.78***	0.82***		0.54***	0.24	0.27*	0.26	0.22
Litter sample	0.59***	0.56***	0.59***		0.33*	0.24	0.40**	0.34*
Processing plant carcass rinses
Outside plant	0.86***	0.83***	0.82***	0.58***		0.49***	0.35**	0.13
Rehang	0.87***	0.86***	0.85***	0.53***	0.91***		0.53***	0.01
Prechill	0.85***	0.83***	0.84***	0.55***	0.89***	0.92***		0.05
Postchill	0.62***	0.69***	0.74***	0.44***	0.75***	0.75***	0.81***

^aMean log₁₀MPN of samples collected from the same flock. Salmonella values are shown in boldface, and Campylobacter values are shown in lightface. Statistical significance: *, P < 0.05; **, P < 0.01; ***, P < 0.001.