Effect of hatching cabinet sanitation treatments on Salmonella
cross-contamination and hatchability of broiler eggs.
USDA, Agricultural Research Service, Russell
Research Center, Athens, Georgia 30604-5677, USA.
Four trials were conducted to evaluate the efficacy of
hatcher air sanitation utilizing ultraviolet light (UV), ozone, or
hydrogen peroxide on bacterial populations, the spread of Salmonella,
and hatchability of broiler eggs. The UV light (254 nm, 146 mu W/s) and
ozone (0.2 or 0.4 ppm) treatments were continuously applied through the
last 3 d of hatch, the hydrogen peroxide treatment (2.5%) was
administered 1 or 2 min of each 10 min at rates of 500 or 100 mL/h.
Hatchability was not significantly reduced by sanitizing treatments when
compared with the untreated control (94 vs 95.6%). As compared to
controls, all sanitizing treatments reduced 75 to 99% of the total
bacteria, Enterobacteriaceae, and Salmonella in the hatching cabinet air
samples. The use of hydrogen peroxide resulted in greater reduction of
bacteria than ozone or UV light. Only hydrogen peroxide significantly
reduced Salmonella levels on eggshell fragments. Significant reductions
in the number of Salmonella-positive chicks occurred using the ozone and
hydrogen peroxide treatments. Hydrogen peroxide significantly reduced
the magnitude of Salmonella colonization in chicken ceca. These trials
demonstrated that the spread of bacteria can be effectively reduced in
the hatching cabinet by air sanitization using UV light, ozone, and
hydrogen peroxide. The potential to reduce bacterial cross contamination
in the hatcher is achievable without depressing hatchability.
PMID: 8833369 [PubMed - indexed for MEDLINE]