We've used this technique successfully too and a
local dairy farmer told me about doing it with full size Holstein cows (big animals) who had gotten chilled or hurt a leg.
The one caution on the piglet is don't beat yourself up if the piglet does not make it. What I have found is that most of the piglets that are so weak that I try to save are actually non-viable. They are that small percentage who have some sort of congenital defect like an imperfect heart, lungs, etc and just aren't going to live no matter how hard we try to help them. It can be emotionally difficult. You keep trying because that's what you do...
Cheers
-Walter
Sugar Mountain Farm
Pastured Pigs, Sheep & Kids
in the mountains of Vermont
Read about our on-farm butcher shop
project:
http://SugarMtnFarm.com/butchershop http://SugarMtnFarm.com/csa