Monitor flock mortality rates and quantify the financial loss from dead and culled birds. Track survival percentages and understand the true cost of flock depletion on your farm's bottom line.
Flock Inputs & Parameters
Calculates automatically
birds
dead
culled
Runts, severely deformed, or non-viable birds
Rs/chick
To calculate unrecoverable chick capital loss
Rs/bird
e.g. 2.0 kg × Rs. 420/kg = Rs. 840 gross value
Mortality Benchmark
3.50%
Flock survival rate is 95.7% (well within target)
Survival Percentage
95.67%
Commercial standard: 95%+
Remaining Birds
2,870 birds
Saleable live flock
Total Birds Lost
130 birds
Dead + culled combined
Direct Chick Capital Loss
Rs. 14,950
Purchase cost of dead chicks
Potential Revenue Lost
Rs. 109,200
Unrealized market harvest value
How This Calculator Works
The Poultry Mortality Calculator applies standard avian zootechnical mathematics calibrated specifically for Pakistani poultry production norms. Whether modeling 35-day Cobb 500 broilers in Punjab or commercial brown layers in KPK, the engine accounts for feed intake curves, bird mortality, utility overheads, and prevailing mandi price mechanics.
📐Mortality & Loss Formulas
Mortality Rate (%) = (Total Dead Birds ÷ Initial Birds Placed) × 100
Culling Rate (%) = (Total Culled Birds ÷ Initial Birds Placed) × 100
Total Depletion Rate (%) = ((Dead + Culled Birds) ÷ Initial Birds) × 100
Survival Rate (%) = (Remaining Surviving Birds ÷ Initial Birds Placed) × 100
Direct Chick Value Lost (Rs) = Total Dead Birds × Chick Purchase Price
Potential Revenue Lost (Rs) = Total Dead Birds × Expected Final Weight (kg) × Selling Rate (Rs/kg)
Worked Example: Step-by-Step Practical Calculation
Scenario: A farm starts with 3,000 day-old broiler chicks. Over 35 days, 105 birds die and 25 underweight runts are culled. Chick price was Rs. 115, and the expected selling rate is Rs. 420/kg at 2.0 kg.
Starting Assumptions:
Initial Chicks: 3,000
Dead Birds: 105
Culled Birds: 25
Total Birds Lost: 130
Surviving Birds: 2,870
Chick Price: Rs. 115 per chick
Final Weight: 2.0 kg @ Rs. 420/kg = Rs. 840 gross value per bird
Frequently Asked Questions
Common questions about Poultry Mortality Calculator
An acceptable cumulative 35-day broiler mortality rate in Pakistan is 2.5% to 4.0% in environmentally controlled (EC) sheds and 3.5% to 5.5% in open-sided semi-controlled sheds. Any batch exceeding 6% mortality requires diagnostic veterinary intervention.
The highest mortality typically clusters in two distinct phases: Week 1 (brooding mortality from hatchery stress, unhealed navels, or dehydration) and Week 4–5 (ascites, heat stroke, or respiratory/Gumboro complications).
Mortality refers to birds that die naturally from disease, stress, or organ failure. Culling refers to the intentional removal of severely deformed, blind, or stunted birds that consume feed without gaining marketable weight.
When ambient temperatures exceed 38°C in non-controlled sheds, panting birds become alkalotic, leading to dehydration and sudden death syndrome. Mortality during June–August heatwaves can spike to 10%–15% without adequate foggers or pads.
A daily mortality exceeding 0.1% of the flock (e.g., more than 5 birds per day in a 5,000-bird shed) after Week 1 is an early warning indicator of infectious disease or water/feed contamination.
Poultry Farming Estimation Notice:
These calculations are estimates provided for informational and planning purposes. Actual poultry farming costs, feed performance, Feed Conversion Ratios (FCR), mortality, mandi market prices, and net profitability vary depending on farm shed ventilation, bird genetics, feed quality, seasonal temperatures, management practices, and local market conditions across Pakistan. Always verify binding commercial transactions with registered wholesale mandi dealers or local District Market Committees.
Data Notice & Disclaimer:
Rates may vary by market, supplier, location, timing and transaction type. The website presents collected market-rate information for informational purposes and does not guarantee a particular buying or selling price. Check local district market committees or registered wholesale mandi dealers for binding transactional terms.