The Right Amount: The Most Common Mistake
60% of cats in Italy are overweight/obese.
Cause number 1: wrong portions.
Common Question: "How much to give?"
Answer: precise formula.
Let’s see.
The Nutritional Requirement Formula
Basic Calculation
For neutered adult cats:
- 40-50 kcal per kg of ideal weight per day.
For non-neutered adult cats:
- 50-60 kcal/kg.
Puppies:
- 100-200 kcal/kg.
Elderly cats:
- 35-40 kcal/kg.
Example
Neutered adult cat, ideal weight 4 kg:
- 160-200 kcal/day.
Translating into Food
Wet Food
100 g of quality wet food = about 80-100 kcal.
For a 4 kg cat:
- 200 g/day in total.
- 2-3 small cans.
Kibble
100 g of kibble = about 350-400 kcal.
For a 4 kg cat:
- 40-50 g/day.
- A small cup.
Mix
70% kibble + 30% wet food:
- 30 g kibble + 80 g wet food per day.
The Adjustment Factors
Activity
Sedentary (apartment life, little play):
- Lower requirement (-10%).
Active (daily play, active dog):
- Higher requirement (+10%).
Age
Puppies (0-12 months): high requirement.
Adults (1-7 years): standard.
Elderly (7+ years): reduced by 10-20%.
Neutering
Neutered: -20-30% compared to non-neutered.
Tendency to be overweight post-neutering.
Specific Conditions
Overweight:
- "Light" food.
- Reduction 20-30%.
Underweight/recovery:
- Increase 20-30%.
Pregnancy/lactation:
- Drastic increase.
The Meal Distribution
Ideal Schedule
3-4 meals a day:
- More "natural" (cats in the wild eat small frequent prey).
- Reduces post-meal vomiting.
2 meals:
- Acceptable.
1 meal:
- Not recommended (digestive stress).
Practical Schedule
For adult cat:
07:00: 30% of daily total.
12:00: 20%.
18:00: 30%.
22:00: 20%.
Weighing
Scale
Weigh portions:
- Kitchen scale.
- 5-10 €.
Cost: minimal.
Benefit: accuracy.
Indicative Charts
For quality wet food:
| Cat Weight | Large Cans (170g) | Pouches (85g) |
|---|---|---|
| 3 kg | 1-1.5 | 2-3 |
| 4 kg | 1.5-2 | 3-4 |
| 5 kg | 2 | 4-5 |
| 6 kg | 2-2.5 | 5-6 |
The Signs of "Right Portions"
Stable Weight
Monthly weigh-in:
- Same scale.
- Same time.
Variation max 10% in the month:
- Check portions.
Body Condition Score (BCS)
Ribs:
- Detectable under light pressure = ok.
- Not detectable = overweight.
- Protruding = underweight.
Waist:
- Visible from above = ok.
- No waist = overweight.
The Signs of "Wrong Portions"
Overweight
- Body Condition Score 7-9 out of 9.
- “Round” belly.
- Ribs not palpable.
- Difficulty jumping.
Underweight
- BCS 1-3.
- Protruding ribs.
- Dull coat.
What NOT to Do
❌ Always full bowl:
- Cats tend to eat out of boredom.
❌ Extra snacks without control:
- Add up calories.
❌ Same food for life:
- Needs change.
❌ "Low-cost" food:
- Often requires large portions to satisfy.
The Weight Loss Phase
For Overweight Cats
Gradual reduction:
- 5-10% per week.
- Never abrupt.
Quality "light" food:
- Royal Canin Satiety.
- Hill's Metabolic.
Time: months.
Important:
- Never fast a cat (risk of hepatic lipidosis).
Diabetic Cats
Precise portions:
- Calibrated.
- At the same times.
Under veterinary control.
The Truth
The right portions:
- ✅ Formula 40-50 kcal/kg (neutered).
- ✅ 3-4 meals a day.
- ✅ Weighing portions.
- ✅ Adjustment for activity.
- ✅ Monthly BCS check.
Strategy:
- Calculate requirement.
- Weigh portions.
- Distribute 3-4 meals.
- Check weight monthly.
Investment:
- Scale: 10 €.
- Time: 5 min/day.
Benefit:
- Cat in shape.
- Health preserved.
- Increased life expectancy.
And remember: the cat does not self-regulate as many believe.
Precise portions = healthy cat.
Weigh, calculate, check. Three actions that save years of life.
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