And if you want to sell babies eventually or even those breeder snakes you might not want to feed asf's unless you absolutely have to.
People that don't breed asf's rarely buy snakes that are asf eaters, which means you might be selling the snake for a reduced amount or not at all.

1 female rat to each snake and if you separate females from their colony while they have babies you'll want 1.5 female rats per snake