I know this is an old topic but I just finally got a chance to really check out the forum and wanted to share my experience with liver flukes.
I live in north Idaho and last summer a couple of my bottle baby rescue kids nearly died from liver fluke infestation. They seemed to be doing fine and I was starting to wean them. Life got a little busy for a few days so they just got the regular morning look-see to be sure they were running to the feeder and diving into there meals before I went to work. My husband got home early that day to find one of the little guys out flat on his side in the sun almost dead.
Apparently, they just weren't drinking enough water on there own (without the bottle feedings) to keep up with hidration with the underlying fluke infestation that I had never heard of before. It took a lot of IV fluids and intensive care to save his life. The twin to this kid was not far behind him but we caught it in time to keep him from going so far down hill. Fecal exams revealed the fluke problem. I wormed everyone with Ivomec*Plus right a way but I had to wait until my kid was a bit stronger to worm him.
Our local deer population is fairly healthy but we always check our livers for flukes. For some reason it never occured to me to check my goats. It should have since the deer come in and graze with the goats in the back yard all summer long. We have a lot of snails here as well and they are also a vector for liver flukes.
I did a lot of research and found that the current consensus is that you actually should NOT worm every goat in the heard if only one is having a problem. Pasture rotation and manure management seems to be the key. The feeling is that if you only worm the goats that seem to need it the most and leave the healthier ones alone the goats will have better natural defenses. Also, if you only worm the goats that seem to need it the most you will have less trouble with chemical resistant parisites. The unwormed goats keep the parisite gene pool diluted by having only a small portion of the parisites exposed to the worming chemicals rather than all of them.
I do my own fecals now and also use the FAMANCH chart. The FAMANCHA chart can be purchase on line. Its a great tool to gauge how anemic your goats are and when they need worming. My goats seem a lot better off for it. And I spend a lot less money on wormers now.
http://www.barnonemeatgoats.com/worms.htmlThis a great page for wormers and dosages. The worst thing you can do is underdose your wormer. The goats don't get the full benefit of it and the worms get resistant quickly. Unless your wormer is labeled for goats you usually have to double the dosage listed for cattle or horses.
Glenna