I've not seen one of these that I remember, but the necropsy said the hen was loaded with Trematodes. The vet is recommending praziquantel, with an 80 day withdrawal period. I only hope that they haven't damaged their oviducts so much that they are permanently affected from laying.
BTW, I was told by the vet and the necropsy doc that Trematodes can't be diagnosed in a fecal...
Necropsies are sometimes the way to go to get down to the nitty gritty of a problem. Flukes can be seen in feces, that's part of the reproductive lifecycle. I guess the vet and necropsy doc simply wanted to verify that they were in fact flukes. I rely on my eyes to ID parasites, then treat accordingly saving time and money. If I dont know what it is, I look it up. Here's a link, scroll down to "Life cycles."
All poultry roundworms, cestodes, trematodes have a lifecycle; either a direct lifecycle or indirect lifecycle. Eggs or segments are excreted from chickens in feces onto the soil...seen or unseen.
In any case, I'm glad you're treating your hen and hope she recovers soon.
BTW: Did you have the necropsy performed on another hen?
Edited by dawg53 - 3/6/15 at 8:41am