Poultry health care / De-worming


Worms in commercialised poultry farms is a recurring problem dependent on the housing system the animals are held in. Animals held in floor housing systems with outdoor run have an increased risk of getting worm-infections. De-worming medicines in these housing systems are used on more regular bases than in other housing systems. In the housing systems like the battery system worm-infections do not occur frequently. The following factors increase the risk of worm infections on a farm:
• Ground housing systems
• Large groups
• When animals come in contact with faeces
• Other animals
• Outdoor access

The contents of de-worming paste form a risk for food safety. Therefore waiting periods are set (MRL). These substances also penetrate the egg. Eggs that are produced by hens
during this period can not be used for consumption. Instead they are either disposed or they can be used in cosmetic products (e.g. shampoo). This can be a big financial loss for farmers. Therefore an effort has been made to make de-worming pasta’s with a 0 day waiting period. Although the paste is more expensive eggs do not have to be disposed and can be used for consumption purposes.

In the meat production process risk for the farmer and consumer are lower. The farmer won’t de-worm his flock at the end of the period because this would not be profitable for the farmer. By the time the animals go to the slaughterhouse the level will be below the MRL.