We've used chicken ointment before. For some reason that's blue too.
Luckily the piglets haven't hurt each other too much yet. I love that yours are black. They look like wild boars. Our Sow is black and the hog was white mostly. None of the piglets turned out black.
Here is our video of the 2 week old piglets.
https://steemit.com/steem/@camb/piglet-update-2-uploading-video-to-steem-and-ipfs-without-dtube-tutorial-instructions
Very cool. I'll check it out!