Every spring, we "worm" all of the brood ewes and rams at about the same time we shear all of the sheep. "Worming" is sheep lingo for drenching the sheep with medicine to remove internal parasites. As shown in the picture on the left, "worming" or "drenching" involves shooting a "wormer" (worming medicine) orally. There are several types of wormers. I use two types of wormers, a white wormer and a liver fluke wormer. My white wormer is Ivomec (active ingredient Ivermectin). This treats round and flat worms and poses to no danger to the health of pregnant ewes, unlike my liver fluke wormer. Valbazen, what I use for liver flukes, can pose a serious risk for pregnant ewes and should not be used in pregnancy but only for rams and unexposed ewes. Most of my brood ewes have lambed, so they will get Valbazen. The one ewe who hasn't lambed will recieve Ivomec. All of the weaned lambs will also get Valbazen. I will worm the sheep during shearing.
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