STEP 1: CALCULATE GE. GE (kcal) = (5.7 x % protein) + (9.4 x % fat) + [4.1 x (% NFE + % crude fibre)] . STEP 2: CALCULATE ENERGY DIGESTIBILITY (%) Dogs: % Energy Digestibility = 91.2 – (1.43 x % crude fibre in DM) . STEP 4: CALCULATE METABOLISABLE ENERGY. Dogs: kcal ME = kcal DE – (1.04 x % crude protein)
How do you calculate the energy content of a feed?
The equation for calculating the energy content of a food source via calorimetry is as follows: Energy (joules) = Mass of water (g) × 4.2 (J/gºC) × Temperature increase (ºC)
How do you calculate kcal in dog food?
Example 1: Dog Food contains 310 kcal ME/cup. And the label states that one cup measure of food weighs 110 grams. To convert kcal/ cup to kcal/ kg (when weight of food is in grams): (1000 divided by weight of food per cup) X number of calories per cup 1000/110 x 310 = 2818 kcal ME/ kilogram.
How do you calculate mass of energy in food?
Energy can be calculated using the formula: Q = mc ∆T. In the formula, Q = the energy in joules or calories, m = the mass in grams, c = specific heat and ∆T = the change in temperature which is the final temperature minus the initial temperature.
What is energy in dog food?
Metabolizable energy is the energy contained in the food that is actually absorbed by your dog. It's determined through feeding trials, in which animals are fed the diet and their urine and feces are collected and analyzed for their energy contents.
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