A two-week fast really is nothing to worry about, even though our high-metabolism mammal brains think it is.
Your f/t weaned rats may be a bit bigger than what the breeder was feeding, she’s just not hungry. Or she’s going into shed - lots of BPs won’t eat when in shed. Odds are this is just a temporary thing, and if you keep offering f/t once every week or two she’ll eat again when she’s ready.
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