At some point you have to consider whether or not you're stressing their digestive system. They can only digest so much material so rapidly... that being said if you have a 2000g adult that you never switched over to rats its going to take a lot of mice to keep it fed properly and because of the size of the animal it can handle more material to digest.
I think, just from a sustained stress on digestive system vs. spiky stress that it would be preferable to feed frequently than to feed several animals once a week.
People feed once a week because its convenient and other personal preferences. There is no biological reason to feed once a week.
Reply With Quote