Letting rats live together is easuer on you, not having to moce a few rats aroubd abd it also helps to ensure that you always have a litter but at the very same time it also takes its toll on the females body and shortens her lifespan as well as redicing lutter size. I personally like keep it 4.1 or at most 5.1 if you're going to use this meathod.

I also posted yesterday that after thousands of rats I've only had maybe 4-6 bad mothers who I had to cull. My biggest female her name was alpha. She would kill males snaller than her, I got aroubd this by once they were weaned moving them immediately to a new tub.

Rat breedibg is fun but also a lot of work. I reccomend tekland 20-16 has done me wonder and only about .80 a poubd.