宠物喂食量计算器
科学计算狗狗猫咪每日所需食物份量
公斤 (kg)
每100克食物的卡路里数 (干粮通常350-450 kcal)
每日能量需求 (DER)
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千卡/天
每日建议喂食量
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克/天
小贴士： 请将每日总量分成2-3餐喂食，并确保宠物随时有清洁饮水。体重变化应缓慢进行，请定期称重并调整喂食量。
科学计算狗狗猫咪每日所需食物份量
宠物的每日能量需求（DER）建立在静息能量需求（RER）之上，再乘以一个活动系数。RER 是宠物在静止状态下维持基本生命活动所需的能量，国际上广泛采用如下公式（适用于猫和狗）：
然后根据绝育状态、活动量和生命阶段，乘以相应的活动系数得到 DER。常见的系数如下：
最后，根据食物的热量密度（每100克千卡数），将 DER 转换为每日喂食克数。
示例：一只 15kg 的正常活动成年未绝育狗狗，RER = 70 × 150.75 ≈ 534 kcal，活动系数 1.4，因此 DER ≈ 748 kcal。如果狗粮每100克含380 kcal，那么每日喂食量 = 748 ÷ 380 × 100 ≈ 197克。
成年犬猫通常每天喂2次（早晚各一次）。幼犬、幼猫新陈代谢快，建议每天喂3-4次。定时定量喂养有助于消化系统健康和体重控制。
湿粮含水量高，热量密度通常在70-100 kcal/100g，而干粮高达350-450 kcal/100g。如果你混合喂养，请分别计算它们提供的热量，确保总热量不超过每日需求。
你可以通过触摸肋骨来判断：用手轻按宠物胸腔，若能轻易摸到肋骨且无明显脂肪层，即为理想体型；若需要用劲才摸到肋骨，可能已超重。请咨询兽医以获得准确的评估。
Calculate ideal daily food portions for dogs and cats
A pet's daily energy requirement (DER) is based on its Resting Energy Requirement (RER), multiplied by an activity factor. The RER formula (NRC, 2006) is:
Activity coefficients:
Finally, divide DER by food calorie density (per 100g) and multiply by 100 to get grams per day.
Example: A 15kg active intact adult dog: RER = 70 × 150.75 ≈ 534 kcal, DER = 534 × 1.4 = 748 kcal. If food contains 380 kcal/100g, daily portion = 748 ÷ 380 × 100 ≈ 197g.
Adult dogs and cats usually do well with two meals per day. Puppies and kittens have higher metabolic rates and benefit from 3-4 meals daily. Consistent meal times support digestion and weight management.
Wet food contains much more water, so its calorie density is lower (70-100 kcal/100g), while dry food typically contains 350-450 kcal/100g. If you mix both, calculate the calories from each and ensure the total matches the daily target.
You can perform a simple rib check: gently press on your pet's ribcage. If you can easily feel the ribs with minimal fat covering, the weight is likely ideal. If you have to press hard, your pet may be overweight. Always consult your veterinarian for a professional assessment.