Lambivac is a sheep(lambs) vaccine that vaccinates against the clostridial diseases - tetanus, struck, pulpey kidney and lamb dysentry. (most sheep farmers now use Heptavac P+, which inlcudes a few more, but it is not recommended for goats as per the Goat Veterinary Society). if you google Lambivac there will be info on the web.
As a starter all goats should receive two 2ml doses, injected under the skin, 4 weeks apart. This gives initial immunity. For goats then a 6 monthly booster is recommended, 2ml in one dose under skin again. If this booster is given about 4 weeks before kidding some immunity is conferred to the kid via colostrum. This lasts a few weeks, then the kids should be started on the two doses as above.
there is some costs involved, especially if like me you only have a few goats - the smallest lambivac bottle you can buy is 50ml. And once opened the bottle cannot be stored, as it goes off/becomes inactive very quickly.... some people manage to get a few doses from the vet, or if you have other goatkeepers nearby. But it is difficult to schedule these things in line with other people. I just bite the bullet and get lambivac for the goats and Heptavac for the sheep....