Hatching egg sanitation using UV light

'Source: Poultry Research Centre News - Vol. 5 No. 1, 1996'

Berrang, M. E., N. A. Cox, J. S. Bailey and R. J. Buhr, 1995. Efficacy of ultraviolet light for elimination of Salmonella on broiler hatching eggs. Journal of Applied Poultry Research 4:422-429.

Berrang and associates did a study to investigate the potential of using ultraviolet (UV) light to kill Salmonella on the surface of hatching eggs. UV light (wavelength of 254 nm) was used to irradiate eggs which were treated with a drop containing 100,000 Salmonella cells, or dipped in a ‘Salmonella soup'. Some of the eggs in each treatment also received a smear of sterile adult chicken feces to simulate dirty eggs from the farm. A 10 minute exposure to the UV light killed about 75% of the Salmonella organisms on the eggs which were contaminated by the drop of culture. However, a 10 minute exposure to the UV light killed only about 15% of the Salmonella on eggs which were dipped in the Salmonella culture. A 10 minute exposure to the UV light killed none of the Salmonella on the simulated dirty eggs. Hatchability was not affected by UV treatment.