You can also "test" the mares colostrum with an antifreeze tester, which tests the specific gravity of the colostrum (a very good indicator of quality). You milk the mare into a small container and draw up some of the colostrum into the tester. If all of the balls float, then the colostrum should be good. However, that doesn't mean the foal will absorb those antibodies, so you REALLY need to get some SNAP foal tests which can be done stall-side (even though I order my own tests, I have my vet out to draw blood and do a thorough check at 9-12 hours post foaling, if at all possible. If not, I luckily have a very strong and needle proficient friend available even at all hours of the night.
I've had two foals with a partial failure of passive transfer born in my care, and even though we supplemented with Seramune, they didn't retest any higher. I would make sure that you have a vet that can do a plasma transfer. My vet had never done one, but was more than willing to do whatever I needed to ensure my foals were healthy, or to refer me to someone who could.
As always, it is better to be proactive than reactive. :) Since your foal isn't on the ground yet, you still have time to get your ducks in a row for post-foaling at the very least.
Proud Breeder of Trakehners and Anglo-Trakehners
Last edited by Joie; 02-19-2012 at 10:39 PM.