Table 5.

Fecal Salmonella spp. prevalence in high-risk cattle fed supplemental Bacillus subtilis PB6 and/or chromium propionate

	Treatmenta					P-value
Item	CON	CST	CHR	CST + CHR	SEMb	CST	CHR	CST × CHR
Salmonella spp., CFU/gc	4,150	4	13,620	220	18.94	0.07	0.33	0.49

^aCON = negative control; CST = 13 g per animal daily DM inclusion of prepared Bacillus subtilis PB6 product (CLOSTAT, Kemin Industries, Des Moines, IA); CHR = 450 ppb DM chromium propionate (KemTRACE Chromium, Kemin Industries); CST + CHR = 13 g per animal daily DM inclusion of prepared Bacillus subtilis PB6 product + 450 ppb DM chromium propionate.

^bStandard error of the least square mean.

^c P-value and SEM reported from data transformed using square root. Treatment means are back-transformed to reflect actual CFU/g.