Well I hate to break it to you but female true hairless rats rarely lactate and usually need a foster mom for the babies.
I've tried selling true hairless around here, NO takers lol.
I have fed hairless and seen no difference and the hassle hairless gives isn't worth raising them IMO
Now if you like them and want to make them because it's fun and a hobby, do it, just makes sure to have another female to foster the babies.
I breed a lot of double rex/double velveteen patchworks, they are healthy, breed well and lactate like a normal rat so they can feed their own babies.
This is a double velveteen dwarf I made, he regrew a lot of his hair but still was a funny looking little guy.
![]()