My rats will be ready to go in the next week or two, and I have a few questions on there genetics. I bought 3 black hoodeds, and a berkshire. What should I expect out of them? Hoodeds of different colors? Selfs? Rexes? Dumbos? What do you normally get out of your petco rats?

Also, when should I keep some females out of a litter to replace there moms? Like how many months before there moms are retired should I take them out so they will be up to size when there moms have had there last litter?

Lots of new questions for yall! And how many grams a week do your females gain when not preggo? Mine gained from 10-15 grams sometimes more a week! Thanks!