1. What is RER and MER?

RER (Resting Energy Requirement) is the number of calories needed for basic physiological functions at rest. MER (Maintenance Energy Requirement) is the total daily calories needed including activity and other factors.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

• \( weight_{kg} \) — Body weight in kilograms
• \( activity\_factor \) — Multiplier based on life stage and activity level

Explanation: The equation accounts for the non-linear relationship between body weight and metabolic rate.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for maintaining healthy weight, supporting growth in young animals, and managing weight loss/gain programs.

4. Using the Calculator

Tips: Enter weight in kilograms and select the appropriate activity factor based on your pet's life stage and condition.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between RER and MER?
A: RER is just for basic functions at rest, while MER includes all daily activities and life stage needs.

Q2: How often should I recalculate my pet's needs?
A: Recalculate whenever weight changes by 10% or more, or if activity level/life stage changes significantly.

Q3: What if my pet is overweight?
A: Use the weight loss factor (2.0) and aim for gradual weight loss of 1-2% of body weight per week.

Q4: Are these values exact for every pet?
A: No, individual needs vary. Use as a starting point and adjust based on body condition and veterinary advice.

Q5: What about very active working dogs?
A: Some working dogs may need factors up to 3-5 times RER. Consult a veterinary nutritionist for these cases.