Technical Bulletin

To: All Clients

Subject:A role for boot hygiene in disease control.

At the time of writing there have been a total of 9 confirmed cases of Newcastle disease in the UK since late December (5 in GB and 4 in Northern Ireland). A suspicion of ND on a site can cause serious disruption to production systems, confirmation causes very serious disruption. There is some evidence that infected wild birds may be a source of this infection. One important route by which infection can be brought into the poultry house is through contaminated footwear. Having footwear dedicated for use within each shed would be ideal. In practice this hazard is normally controlled by foot dipping.

We suggest that you review your current procedures for preventing the tracking of environmental contaminants into houses. For foot dips things to consider might be:

1. Are staff using footwear which is suitable for dipping? - i.e. Wellington boots

2. Are suitable containers available? There may be health and safety issues with respect to risk of slipping.

3. Are facilities available for washing and/or brushing boots? - Contaminating the dip with organic material will quickly reduce its efficacy - the more the material, the quicker it will happen.

4. Is the disinfectant used at a suitable concentration for this specific purpose? Check specific product recommendations (e.g. 1:100 for Longlife 250S and Virodine).

Disinfectants work through chemical reactions which tend to be more efficient at higher temperatures. In the winter months it is probably preferable to have the dip within the service area if this is feasible (this will keep the temperature up and also prevent dilution by rainfall). It should be just inside the door if used in this way.

 

If you have any queries arising from this please do not hesitate to contact one of us.

Paul McMullin