Parasitic worms (endo-parasites) are found inside the hen’s body and are sometimes called Helminths. They are more common in free-range hens than in birds kept in other systems with the large round worm (Ascaridia Galli) being found in over 60% of free-range hens. Even an average burden of worms in a hen can affect egg production, feed conversion efficiency, and general health, whilst a high burden can have serious consequences. Apart from laying fewer and smaller eggs, the hen’s resistance to disease becomes lower making it more prone to secondary infections.
Heavy infestations can cause haemorrhaging and anaemia, blockages, nutrient deficiency and poisoning from the waste produced by the worms.
The two most common parasitic worms which may infect your flock are Round Worms (Nematodes) and Tape Worms (Cestodes).
Learn how to provide Effective Treatment for endoparasites.