i have one breeder female that is not eating....the rest of my collection is eating fine..............she has not eaten for about 3months.......she has lost only 15 grams! she is just turning her nose up to food, and i haven't tried to push her. If she loses a good amount of weight, and becomes sick looking, a vet visit may be in order, or i'll try some ASF rats.......or my absolute last resort..Force Feed!