You can get colostrum from the vet. Don't know if it comes frozen or powdered. Alternatively you can milk the ewes and stockpile in the freezer. Norman didn't have any colostrum and he did really well. I was pretty meticulous with washing his bottles though. He was a few days old when I realised he'd probably not had any, so I started to panic.
Shame I'm not a bit closer, I'd gladly take an orphan off your hands!
Jane