Have you considered just not having raids on your livestock?

Here's a list of "player base" items. Have no more than 2 of these items within 40 meters of each other. https://valheim.fandom.com/wiki/Player_base

Make your farms away from your "base", and simply don't build any "player base" items near them. A workbench is 10 wood; build it when you need to use it, then tear it back down and stuff the wood in a chest for next time.

Voila, no raids.