I need some advice on worming. My vet suggested (wrongly) last fall that we did not need to worm our horses as often as we were. We had wormed them rotational with different wormers every three months and never had any problems. But she said to not worm them and to just do a fecal test in the spring. However I noticed my gelding has lost weight over the last couple of months (he is an easy keeper) and the BO said yesterday he has been rubbing his butt against the stall door lately. I wormed him yesterday with Ivermectin gold and plan on giving him another dose thursday. I also wormed our other horse. Is there any thing else I can do? should I have a fecal test done or should I give him a different wormer? any advice would be appreciated. thanks!