Why pumpkin seeds are yet to be proven
Pumpkin seeds have some nutritional value for poultry, but the jury is still out on whether they work to prevent parasite burdens.
Different varieties of pumpkin have seeds which contain varying amounts of amino acids which may have anthelmintic properties. One of them, curcurbiticin, tested in-vitro (in test tubes in a lab) was effective at killing round and tapeworms. Some field tests in ruminants have shown mixed results.
There is no scientific evidence to show that pumpkin seeds work as a de-wormer. We cannot find any testing that has been done in poultry.
Levels of amino acids in seeds varies, depending on the variety of pumpkin, and how it is grown. Scientists don’t know what specific amino acid (or a mix of them) is effective, or what would be needed to successfully treat an animal.
Pumpkin seeds won’t hurt your birds. Chop them using a knife or food processor to aid birds with digestion.
However, they are not a proven dewormer.