The problem I see I that many chicken owners will read such studies and assume that feeding their chickens pumpkin seeds that they don't have a worm problem.The studies speak for themselves. If a plant or chemical product affects helminths in the gut or out of the gut it should work across species. No. I did not find a study that dealt specifically with fecal load in CHICKENS before and after cucurbit treatment. However, the fact that cucurbits do have an effect on helminth motility, and the studies quoted came to the conclusion that cucurbits were fairly effective as an antihelminthic is sufficient for me. Further, who would pay for such a study? Follow the money, and you will find out how truthful or self serving a lot of studies are. Studies in the poultry industry tend to be paid for by the chemical and pharmaceutical pushers.
Expensive studies aren't needed, all I want to see are the before, during and after fecals from one person.
I have a friend that does their own fecals, and they have done before and after fecals on the efficacy of the different types of sulfa drugs against coccidia, the efficacy of amprolium against coccidia, and the efficacy of using albendazole in water to treat various worms.
Why isn't someone that believes in pumpkin seeds willing to do this? It's not that expensive.