1. What is Fat DM?

Fat DM (Fat on Dry Matter basis) is a standardized way to compare fat content in pet foods with different moisture levels. It represents the fat percentage if all moisture were removed from the food.

2. How Does the Calculator Work?

The calculator uses the Fat DM formula:

Where:

• \( Fat \) — Fat percentage as fed
• \( Moisture \) — Moisture percentage in the food

Explanation: The formula adjusts the fat content by removing the water component, allowing for accurate comparison between wet and dry foods.

3. Importance of Fat DM Calculation

Details: Comparing fat content directly between different pet foods can be misleading due to varying moisture levels. Fat DM provides a standardized measurement that accounts for moisture differences.

4. Using the Calculator

Tips: Enter the fat percentage and moisture percentage from the pet food label. Both values must be between 0-100%, and moisture must be less than 100%.

5. Frequently Asked Questions (FAQ)

Q1: Why calculate Fat DM instead of using as-fed values?
A: As-fed values include moisture, which varies between foods. Fat DM removes this variable for accurate comparison.

Q2: What are typical Fat DM values for dog foods?
A: Dry foods typically range 10-20% Fat DM, while wet foods often range 20-40% Fat DM.

Q3: Where can I find the fat and moisture percentages?
A: These values are usually listed in the guaranteed analysis section of pet food labels.

Q4: Can I use this for other nutrients?
A: Yes, the same formula works for protein, fiber, and other nutrients to calculate their dry matter basis.

Q5: Is higher Fat DM always better?
A: Not necessarily. Optimal fat content depends on the dog's age, activity level, and health status.