Loose stool and worms

Just thought I'd share something with you. Even after over thirty years in this business I still learn things about care of our animals. I have a bighorn that has been losing weight and has had very loose stool. I did what I always do which is to worm with Ivermic and give shots of Micotil. This had the animal pooping pellets the next day but three days later back to the same old thing. As I had wormed him I tried different medicines to cure his problem to no avail. The sheep was at deaths door when I sent in a stool sample. It came back heavy with small stomach worms. The worm was called bankrupt worm. The best wormer for that worm was Valbelzen. Sure enough I wormed him with that and the next day he was pooping pellets and now is on the mend. The life cycle for these worms is twenty days and the wormer will only kill adult and forth stage larve so any eggs will hatch and start the whole cycle all over in twenty one days again. To break this cycle you have to worm the animal every 20 days.

Well here is where it might help those of you that have a deer with loose stool all the time and the deer just keeps going down hill till it dies. The worms had become resistant to Ivermic. Also I was worming every 30 to 45 days on the feed which didn't break the worm cycle. The fact I was worming every 30 to 45 days in summer more than likely made the surving worms resistant to the Ivermic. Just a thought here that might help others.