Table 8.

Synthesis of major bacterial pathogen detection for the three farms included in the experimental plan.

	Substrate (n = 33)			Larvae (n = 34)			Frass (n = 36)
	F1 (n = 15)	F2 (n = 3)	F3 (n = 15)	F1 (n = 15)	F2 (n = 3)	F3 (n = 16)	F1 (n = 15)	F2 (n = 4)	F3 (n = 17)
Campylobacter spp.	0%	0%	0%	0%	0%	0%	0%	0%	0%
Clostridium perfringens presumed	7%	0% *	7%	0% *	0% *	69%	0% *	25%	6%
Coagulase-positive staphylococci	0% *	0% *	0% *	0% *	0% *	0% *	0% *	0% *	0% *
Cronobacter spp.	13%	0%	20%	0%	0%	0%	0%	0%	35%
Escherichia coli β-glucuronidase-positive	7%	0% *	20%	87%	33%	87.5%	87%	75%	59%
Listeria monocytogenes	0%	0%	0%	0%	0%	0%	0%	0%	0%
Presumptive Bacillus cereus	87%	67%	53%	0% *	0% *	0% *	47%	100%	65%
Salmonella spp.	0%	0%	0%	0%	0%	0%	0%	0%	6%

* All samples had results <1 log cfu/g, below the limit of quantification.