1. What is Maintenance Energy Requirement (MER)?

The Maintenance Energy Requirement (MER) estimates the average daily calorie needs for an adult cat to maintain its current weight. It accounts for basic metabolic needs plus normal activity.

2. How Does the Calculator Work?

The calculator uses the MER formula:

Where:

• \( weight_{kg} \) — Cat's weight in kilograms
• 0.75 — Metabolic scaling exponent
• 1.2 — Activity factor for average pet cats

Explanation: The formula accounts for the non-linear relationship between body size and metabolic rate, with adjustments for typical activity levels.

3. Importance of MER Calculation

Details: Accurate calorie estimation helps prevent obesity or underfeeding, maintains optimal health, and provides a baseline for weight management programs.

4. Using the Calculator

Tips: Enter the cat's weight in kilograms (1 kg = 2.2 lbs). For obese cats, use ideal weight rather than current weight when calculating calories for weight loss.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula appropriate for all cats?
A: This provides an average estimate. Individual needs may vary by ±20% based on activity level, metabolism, and environment.

Q2: How should I adjust for weight loss?
A: For weight loss, feed 80% of MER calculated for the target weight. Consult your vet for specific plans.

Q3: Does this work for kittens?
A: No, kittens have higher energy requirements. Use specific kitten formulas (typically 2-3× adult MER).

Q4: What if my cat is very active or sedentary?
A: Adjust the activity factor: 1.0 for inactive, 1.4 for very active cats. Working cats may need up to 1.6.

Q5: How often should I recalculate?
A: Recalculate whenever the cat's weight changes by 10% or more, or if activity level changes significantly.