Calculating a Pet’s PER, DER, and Food Intake
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RER (Resting Energy Requirement (kcal)) = Body Weight (kg)0.75 × 70
DER (Daily Energy Requirement) = PER × Activity Factor
The activity factor varies depending on the pet’s age, activity level, health status, and other factors.
We use approximately 1.6 for dogs and 1.2 for cats as a baseline. If the pet is highly active, this factor increases to 2–4 or higher.
Daily Food Requirement = DER ÷ Calories per 100 g × 100
DER (Daily Energy Requirement) = PER × Activity Factor
The activity factor varies depending on the pet’s age, activity level, health status, and other factors.
We use approximately 1.6 for dogs and 1.2 for cats as a baseline. If the pet is highly active, this factor increases to 2–4 or higher.
Daily Food Requirement = DER ÷ Calories per 100 g × 100
| PER | DER Activity Coefficient |
| Food A Quantity (Japan) | g/1 time g/2 times g/3 times |
| Food B Quantity (Japan) | g/1 time g/2 times g/3 times |
| Reference Moisture Content (DER) | ml |
Energy Requirements for Dogs and Cats
https://www.jstage.jst.go.jp/article/jpan1998/4/2/4_88/_pdf
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Calculates the recommended food amount based on the daily energy requirement.