1. What is the MER Equation for Cats?

The Maintenance Energy Requirement (MER) equation estimates the daily calorie needs for cats based on their weight and activity level. It's derived from metabolic body size (weight^0.75) multiplied by an activity factor.

2. How Does the Calculator Work?

The calculator uses the MER equation:

Where:

• \( weight_{kg} \) — Body weight in kilograms
• \( factor \) — Activity multiplier based on life stage/condition

Explanation: The equation accounts for the non-linear relationship between body size and metabolic rate, with different factors for different activity levels and life stages.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for maintaining healthy weight, supporting growth in kittens, and managing weight loss programs for overweight cats.

4. Using the Calculator

Tips: Enter weight in kilograms and select the appropriate activity factor based on your cat's life stage and condition. All values must be valid (weight > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why use weight^0.75 instead of actual weight?
A: Metabolic rate scales with body surface area rather than direct weight. The 0.75 exponent accounts for this relationship.

Q2: What if my cat is overweight?
A: Use current weight for maintenance calculation, but for weight loss programs, consult your veterinarian for a safe reduction plan.

Q3: Are these values exact requirements?
A: These are estimates. Individual needs may vary by ±20% due to metabolism differences, environment, and health status.

Q4: How often should I recalculate my cat's needs?
A: Recalculate whenever weight changes by 10% or more, or if life stage/activity level changes significantly.

Q5: Should I adjust for age in senior cats?
A: Senior cats may need slightly fewer calories (reduce factor by 0.1-0.2) unless they have weight loss issues.