Risk Of Salmonella In Alternative Housing Systems
Research conducted by Ghent University finds that aviary and floor housing systems pose a greater risk of the transmission of Salmonella from bird to bird than traditional battery cages. In addition, more eggs were internally contaminated by Salmonella in aviary systems when compared to those produced in cage and floor systems.
A greater risk of the transmission of Salmonella from bird to bird was found in aviary systems, though a higher incidence rate was also found in floor systems when compared with cage systems. Researchers were unable to determine why the incidence of Salmonella was higher in aviary systems.
Earlier studies found that stress seemed to induce changes in the hen’s oviduct, which may create an environment more conducive to the survival of Salmonella.