Treatment is based on the underlying cause of the appetite loss. But very often, your veterinarian will recommend special foods for the guinea pig such as commercial hand-feeding formulas, ground up pelleted chow, and vegetable baby foods; vitamin C supplements are sometimes necessary.
If your guinea normally lives with other animals, it should be placed in a separate, stress-free environment during recovery. Force-feeding by your veterinarian or you may also be necessary if the guinea pig refuses to eat.
Because of the various causes to appetite loss, there is no surefire way to prevent the condition in guinea pigs. However, feeding your guinea pig a well-balanced, healthy diet and providing it a stress-free, clean environment may help reduce the chances of the condition.
A condition in which the teeth do not connect properly
A lack of desire for food