Degu Adult Nutrition Guide

Practical feeding plan for adult degus: high-fiber timothy-hay base, low sugar (no fruit), appropriate pellets, safe veggies, and tips for dental and metabolic health.

Nutritional Snapshot

• Average adult weight: 170–350 g (commonly 200–300 g)
• Approximate energy needs: 200–300 kcal/kg body weight/day (see calorie section below)
• Diet foundation: Timothy hay ad libitum
• Pellets: High-fiber chinchilla or degu-formulated pellets, 10–20 g/day (adjust by weight)
• Fiber: High (≥18–25% crude fiber on product label; long-stem hay is best)
• Protein: Moderate (15–20% dry matter)
• Fat: Low (2–4% dry matter)
• Sugars/simple carbs: Avoid — degus are diabetes-prone; no fruit, limit roots
• Water: Fresh, clean water ad libitum

Why degus need a special diet

Degus (Octodon degus) are small, diurnal rodents from Chile. Unlike hamsters and some other pet rodents, they are strict herbivores that evolved on very fibrous, low-sugar vegetation. Two clinical priorities shape adult degu nutrition:

• Diabetes susceptibility: Degus are unusually prone to carbohydrate-induced diabetes mellitus. Simple sugars and high-starch diets quickly raise blood glucose and can precipitate disease. Avoid fruit, sugary treats, and high-sugar commercial mixes.
• Dental and gut health: Like other hindgut fermenters, degus require a high-fiber diet (long-stem hay and fibrous pellets) to maintain tooth wear, healthy gut motility, and normal microbiome.

Energy and caloric requirements

Estimating energy needs uses metabolic body weight. Resting energy requirement (RER) = 70 × BW(kg)^0.75. Maintenance energy for small herbivorous rodents typically runs about 2–3× RER.

• Example (250 g degu): RER ≈ 25 kcal/day. Estimated maintenance ≈ 50–75 kcal/day.
• Expressed per kg body weight: roughly 200–300 kcal/kg BW/day (use body condition score and activity to adjust).

Macronutrient targets

Aim for a diet that emphasizes fiber with moderate protein and low fat and sugars. Target ranges (dry matter basis) for adult degus:

• Crude fiber: ≥18–25% (higher is better; long-stem timothy hay provides bulk)
• Protein: 15–20%
• Fat: 2–4%
• Non-structural carbohydrates (sugars & starches): Keep minimal; avoid added sugars and high-sugar produce

Key micronutrients and supplements

• Calcium: Moderate levels are appropriate; aim for Ca ~0.5–1.0% on dry matter and Ca:P ratio ~1.2–2:1. Excessive dietary calcium (or oxalate-rich greens fed daily) can predispose to urinary mineralization in some rodents — rotate high-calcium greens.
• Phosphorus: Balanced with calcium
• Vitamin D: Present in commercial pellets at recommended levels; avoid high supplemental doses unless prescribed.
• Vitamin C: Unlike guinea pigs, degus generally synthesize vitamin C and do not need routine supplementation. Do not add vitamin C unless a vet recommends it.
• Probiotics/prebiotics: Use only if recommended by your veterinarian, during stressful events or antibiotic therapy.

(References for nutrient balancing include veterinary nutrition texts and WSAVA guidance for exotic species. AAFCO pet food profiles are designed for dogs/cats; they can be a helpful label-reference model but are not directly applicable to degus.)

Recommended everyday diet (practical)

Vegetables and treats — safe choices and portioning

Safe vegetables (serve small amounts, fresh, washed):

• Leafy greens: Romaine, green leaf lettuce, dandelion greens, endive (rotate to avoid overfeeding calcium-rich greens)
• Herbs: Parsley, cilantro, basil (small amounts)
• Low-sugar vegetables: Bell pepper (green), zucchini, cucumber, celery (small pieces)
• Occasional cruciferous veg: Small amounts of broccoli or cauliflower (watch for gas)

Treats to avoid or limit

• Fruit: All fruit should be avoided — high sugar content (apples, raisins, banana, berries, grapes)
• Root vegetables with higher sugar/starch: Carrots, sweet potato, potatoes — avoid or extremely sparing as treats
• Seed/nut mixes and sunflower seeds: Very high fat and often included in mixed seed diets — avoid
• Commercial mixes with dried fruit or sugary bits: Avoid
• Human sweets, yogurts, chocolate: Hazardous and high sugar

Dental health: wear and behavior

Degus have continuously growing incisors and cheek teeth. Long-stem hay plus safe chew items maintain tooth length and wear:

• Provide timothy hay ad lib; it’s the single most important factor for dental health.
• Offer safe wood chews (untreated apple, willow, beech; avoid cedar and treated wood).
• Monitor for signs of overgrown teeth, malocclusion, drooling, reduced food intake, or weight loss — these require prompt veterinary attention.

Feeding schedule and routine

• Hay: Unlimited 24/7 (refresh daily; remove soiled portions)
• Pellets: Measured daily portion in the morning (10–20 g, adjusted by weight)
• Vegetables: Small daily portion in late afternoon/evening (many degus are more active during the day but will nibble throughout)
• Water: Refill daily; clean bottle/water dish weekly

Sample 7-day feeding guideline (for ~250 g adult degu)

Daily staples: timothy hay ad lib, fresh water ad lib Daily measured: 12 g high-fiber chinchilla/degu pellet (adjust to BCS)

Day 1–7 (example rotation of small veg portions):

• Mon: 8 g romaine lettuce + 4 g bell pepper
• Tue: 8 g dandelion greens
• Wed: 6 g parsley + 6 g cucumber
• Thu: 8 g endive
• Fri: 6 g romaine + 4 g zucchini
• Sat: 8 g basil/parsley mix
• Sun: 8 g dandelion or romaine

Adjust quantities based on weight trends: if gaining, reduce pellets; if losing, increase pellets or check for dental/medical issues.

Transitioning to a new diet

• Transition gradually over 7–14 days: start with 25% new diet (more hay/new pellets) and 75% old for 2–3 days, then 50/50 for 2–3 days, then 75/25, then full switch.
• Watch stool consistency and appetite daily. If you see loose stools, anorexia, or lethargy, stop transition and consult your veterinarian.
• Remove sugary or seed-laden mixes immediately and replace with timothy hay and a high-fiber pellet.

Signs your diet is working

• Stable body weight and ideal body condition score (slim but not emaciated; clear waistline)
• Bright, alert behavior and normal activity
• Clean, glossy fur without patchy hair loss or excessive oiliness
• Normal feces: firm, pellet-shaped droppings and occasional softer cecal pellets (coprophagy is normal)
• No excessive thirst or urination (polyuria/polydipsia may indicate diabetes)
• Healthy tooth wear and normal chewing behavior

Red flags — when the diet needs adjustment or veterinary attention

• Increased thirst, increased urination, weight loss: signs of possible diabetes — stop all sugary foods and see a veterinarian immediately
• Diarrhea, very soft stools, decreased appetite after diet change: pause changes and consult your veterinarian
• Weight gain/obesity despite limited food: reduce pellets and treats; reassess exercise and environment
• Overgrown incisors, drooling, difficulty eating: prompt dental exam needed
• Hair loss, poor coat condition, lethargy: may indicate nutritional deficiency or illness

Common mistakes to avoid

• Feeding seed mixes with dried fruit or sunflower seeds — high sugar and fat
• Offering fruit or regular carrot treats
• Skimping on hay (hay is the primary nutrient and tooth-wear source)
• Sudden diet switches without a transition
• Unsupervised vitamin/mineral supplementation without vet direction

Evidence base and reference points

Degus’ metabolic sensitivity to sugar and the need for high-fiber diets is well recognized in veterinary exotic-mammal practice and in comparisons to other hystricomorph rodents. Use the following resources for label interpretation and further reading:

• World Small Animal Veterinary Association (WSAVA) Global Nutrition Guidelines — practical guidance on balanced diets for companion animals and exotic species (wsava.org)
• Exotic Animal Formulary / Clinical Nutrition textbooks — veterinary nutrition reference chapters on small herbivorous rodents
• National Research Council (NRC) nutrient guidance for laboratory and small mammals (for approximate nutrient ranges and research data)
• AAFCO — while designed for dogs and cats, AAFCO pet food labels are a model for interpreting guaranteed analysis and ingredient lists on commercial pellets (aafco.org)

Consult your veterinarian or a board-certified veterinary nutritionist for personalized dietary recommendations.

Quick checklist for owners

• Hay: unlimited timothy hay? Yes.
• Pellets: 10–20 g/day of high-fiber pellet? Yes, adjust by weight.
• Fruit/ sugary treats? No — avoid entirely.
• Veggies? Small daily portions of low-sugar veggies.
• Water: fresh and available always.
• Veterinary follow-up if weight changes, dental issues, increased thirst/urination.

• WSAVA Global Nutrition Guidelines — World Small Animal Veterinary Association. https://www.wsava.org/
• Exotic Animal Formulary, Clinical Nutrition chapters — veterinary textbooks
• National Research Council (NRC) publications on nutrient requirements for laboratory animals. https://www.nap.edu/

Frequently Asked Questions