What should be done if a mouse is overweight? - briefly
Reduce caloric intake by providing a portion‑controlled, low‑fat diet and encourage activity with a larger cage and enrichment objects. Monitor weight weekly and adjust the feeding regimen as needed.
What should be done if a mouse is overweight? - in detail
Excessive body mass in a laboratory mouse requires immediate corrective action. First, obtain an accurate weight measurement using a calibrated balance; record the value and compare it with the species‑specific reference range. If the weight exceeds the upper limit, initiate a structured weight‑loss protocol.
- Adjust diet: replace ad libitum feeding with measured portions of a low‑calorie, nutritionally balanced pellet; eliminate high‑fat treats.
- Modify feeding schedule: provide food in two to three small meals per day to reduce binge intake.
- Enhance activity: introduce a running wheel, climbing structures, and regular handling sessions to stimulate voluntary exercise.
- Monitor health: schedule weekly weigh‑ins; assess body condition score, coat quality, and locomotor behavior for signs of stress or illness.
- Consult veterinary staff: request a physical examination, blood panel, and metabolic assessment to rule out endocrine disorders, hypothyroidism, or genetic predispositions.
- Document progress: maintain a log of weight, diet amount, and activity levels; adjust caloric intake based on weekly trends.
If weight reduction stalls after two weeks, re‑evaluate caloric allocation and increase environmental enrichment. Persistent obesity despite intervention warrants a referral for specialized metabolic testing and possible pharmacologic support under veterinary supervision. Continuous observation ensures the mouse returns to a healthy weight range and maintains overall well‑being.