🥛 Dairy Milk Calculator — Litres per Cow & Herd

Calculate milk yield per cow per day, total herd production, and litres per hectare. Track dairy farm efficiency and benchmark against industry standards.

Quick answer: Pasture-based cows: 15-25 L/day. Intensive systems: 25-40 L/day. Milk per hectare = Total milk ÷ Grazeable hectares. Pasture systems: 8,000-15,000 L/ha/year.

🥛 Calculate Milk Production

Cows currently in milk
Herd total per day
Pasture hectares available
Farm gate milk price
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Litres per Cow per Day
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Litres per Hectare per Day
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Daily Milk Revenue
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Annual Milk per Cow

📐 How Dairy Production Is Calculated

Litres per cow = Total milk ÷ Number of cows
Litres per hectare = Total milk ÷ Grazeable hectares
Daily revenue = Total milk × Milk price
Annual per cow = Daily × 305 (standard lactation length)
  1. Record daily herd milk — from milk meter or vat readings
  2. Count milking cows — exclude dry cows
  3. Calculate per cow yield — divide herd total by cow numbers
  4. Calculate per hectare yield — measure land efficiency

📊 Worked Example

200 cows produce 5,000 litres/day on 100 grazeable hectares. Milk price $0.60/L.

Per cow = 5,000 ÷ 200 = 25 L/cow/day
Per hectare = 5,000 ÷ 100 = 50 L/ha/day (18,250 L/ha/year)
Daily revenue = 5,000 × $0.60 = $3,000
Annual per cow = 25 × 305 = 7,625 L/cow/year

This is a productive pasture-based system. Milk per hectare of 18,250 L is above average for pasture (8,000-15,000).

❓ Frequently Asked Questions

Daily milk per cow = Total herd milk ÷ Number of milking cows. Example: 1,500 litres from 50 cows = 30 litres/cow/day. Track daily to monitor lactation curves.

Pasture-based: 15-25 L/day. TMR systems: 25-40 L/day. High-producing Holsteins: 40-60 L/day. Annual averages: 5,000-8,000 L/cow in pasture, 8,000-12,000 L/cow intensive.

Milk per hectare = Total annual milk ÷ Grazeable hectares. Pasture-based: 8,000-15,000 L/ha/year. Intensive irrigated: 15,000-25,000 L/ha. This is the key land efficiency measure.

Genetics, nutrition (energy, protein, fibre), days in milk (peak at 6-8 weeks), parity, health (mastitis, lameness), heat stress, and milking frequency.

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