A herd name is a basic identification for your goat herd. For example, I chose mine to be "******* Acres". So on my registration papers for each goat their name begins with ******* Acres. For example, I have a goat who's registered name is ******* Acres Lucky Lolita. You can have a different herd name for each registry you have joined or you can have the same on if it is not already taken. As for Boer goat registry's-I cannot think of one at this moment-but i'm sure if you do a search on the internet you should find one pretty quickly.