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Dog Food Energy Equation:
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The dog food energy equation calculates the gross energy content of dog food based on its macronutrient composition. It provides an estimate of the metabolizable energy available to dogs from protein, fat, and carbohydrates.
The calculator uses the dog food energy equation:
Where:
Explanation: The equation accounts for the different energy densities of macronutrients, with fat providing the most energy per gram (9.4 kcal/g), followed by protein (5.7 kcal/g), and carbohydrates/fiber (4.1 kcal/g).
Details: Accurate energy calculation is crucial for formulating balanced dog food, maintaining optimal weight, and preventing obesity or malnutrition in dogs.
Tips: Enter all nutrient values in grams per 100g of food. Values must be positive numbers. The calculator will compute the gross energy content in kcal per 100g.
Q1: What is nitrogen free extract (NFE)?
A: NFE represents the carbohydrate content of the food, calculated by subtracting protein, fat, fiber, ash and moisture from the total weight.
Q2: Is this the same as metabolizable energy?
A: No, this calculates gross energy. Metabolizable energy is typically about 75-85% of gross energy after accounting for digestive and metabolic losses.
Q3: Why are the coefficients different for each nutrient?
A: The coefficients reflect the different amounts of energy released when each nutrient is metabolized, with fat providing the most energy per gram.
Q4: Can this be used for cat food?
A: While similar principles apply, cat food calculations may use slightly different coefficients due to cats' unique nutritional requirements.
Q5: How accurate is this calculation?
A: It provides a good estimate but actual metabolizable energy may vary based on ingredient quality, processing, and individual animal digestion.