Microbiological Indoor and Outdoor Air Quality in Chicken Fattening Houses

Table 1

Microorganisms mean CFU per cubic meter of air range during the four weeks fattening cycle inside and outside the houses and I/O for maximum counts.

Microorganisms	CFU/m^3 range
	0.5 m (in)	1.5 m (in)	1.5 m (out)
Total bacteria	400–1230	150–2000	230–2480	0.78
E. coli	2–300	1–220	0–230	0.97
Salmonella spp.	6–240	4–110	4–400	0.75
Aspergillus fumigatus	0–850	0–610	0–1000	0.61

I/O at 1.5 m detection level.