1. What is the MER Calculation?

The MER (Maintenance Energy Requirement) calculation estimates the daily caloric needs of dogs based on their weight and activity level. This formula is commonly used by Purina and other pet food manufacturers to recommend feeding amounts.

2. How Does the Calculator Work?

The calculator uses the MER equation:

Where:

• \( weight_{kg} \) — Dog's weight in kilograms
• \( factor \) — Activity level multiplier (see below)

Activity Factors:

• 1.8 — Puppy (0-4 months)
• 1.6 — Puppy (4-12 months)
• 1.4 — Active Adult
• 1.2 — Neutered Adult
• 1.0 — Senior/Low Activity
• 2.0 — Working/Performance

3. Importance of Proper Caloric Intake

Details: Proper calorie calculation helps maintain optimal weight, prevents obesity-related health issues, and ensures adequate nutrition for your dog's life stage and activity level.

4. Using the Calculator

Tips: Weigh your dog regularly for accurate calculations. Adjust portions based on body condition score and consult your veterinarian for special dietary needs.

5. Frequently Asked Questions (FAQ)

Q1: How often should I recalculate my dog's MER?
A: Recalculate whenever your dog's weight changes by 10% or more, or if their activity level significantly changes.

Q2: What if my dog is overweight?
A: For weight loss, feed 80-90% of MER for ideal weight, not current weight. Consult your vet for a weight loss plan.

Q3: Are there breed-specific considerations?
A: Some breeds may have different metabolic rates. Giant breeds may need fewer calories per kg than small breeds.

Q4: How accurate is this formula?
A: It provides a good estimate but individual needs may vary by ±20%. Monitor your dog's weight and adjust as needed.

Q5: What about pregnant or nursing dogs?
A: Pregnant dogs need 1.5-2x MER in late pregnancy, and nursing dogs may need 2-4x MER depending on litter size.