Hi again,
I don't wash them at all in the winter- better to leave their coats with their natural oils in to help keep out the cold and damp. I do think most goats should get a bath in the spring, it helps to get out hayseeds, old hair etc. It depends where you live- North of Aberdeen for example you might not be able to get a warm sunny day to wash them until into April, but any time from March to May is fine. Its up to you how often you bath them- ours are all washed a minimum of about 3 times a year, and some are washed once or twice a week. But thats because we often wash them before they go to a show. I'd say a bath twice a year is enough. There again, you may want to bath them after they have been to see a billy goat! Or if they have been ill and scoured for example.
We worm about every 6 weeks in the spring/summer, a bit less in Autumn. Whilst goats are pregnant the hormones suspress worms, but after they kid worms can flare up, so we normally worm in the first week after they have kidded, and again 3 weeks later, to try and cut down the worm cycle. You may find taking a dung sample to your vet will give you an indication of how heavy a worm burden they have. I don't worm kids until they are older than 8 weeks old generally.
If you live in a wet area, or if you know the area is bad for fluke, I would dose for that twice a year as well, as a matter of course.
I would also vaccinate them- we use Heptavac-P but there are other brands you can use. The vaccine helps prevent certain diseases, and includes protection for tetanus. I once had a kid that got tetanus when I was only about 8 (she had been given to me by someone else who didn't vaccinate) and it was awful having to have her put down, but the tetanus was progressing really quickly. Kids should be vaccinated after they are 8 weeks old, and given a further jab after 4-6 weeks. Thereafter a booster every year is sufficient- but if you kid the goats, if you vaccinate them 4-6 weeks before they give birth, the kids will then be protected for their first 6-8 weeks.
Hope some of that is useful!
Beth