Yeah, we do the jags ourselves. It's not too bad once you get the hang of it (honest !) For the first injections, they need 2 jags - 4 weeks apart and every 6 months thereafter. 2ml per pig by sub-cutanious injection behind the ear (even piglets from 6 weeks - but they're a doddle cos you can hold them
the bigger ones get it in the neck, as it were
as their heads hit the feed trough and never give a second thought to it) I buy Porcillis Ery (sp?) from Vetmedsdirect on-line, it's about £14 per bottle but I'm sure there are loads of other suppliers. You might even want to consider getting a prescription from your vet for the Ery + Parvo injection depending on your farrowing record and herd health plan. There's been lots of discussion over whether or not you can store the bottle once it's been breached (to save buying 2 bottles for the first rounds of injections) but the concensus is NO - best with 2 bottles. Just remember to get the correct size of needles depending on the pig you're injecting - Homefield Farm services are good for offering advice on this if you're not sure on sizes and also do a range of needles, syringes and meds - I've used them too and find them really good - they've got vets on-hand too if you ever have a query or problem.
HTH
Karen