How do I calculate poultry feed requirements?

Poultry feed requirements are calculated based on bird type, age, body weight, and production stage. Feed intake increases with age from approximately 20 g/day for a week-old chick to 120-150 g/day for a mature laying hen or 180-220 g/day for a broiler at finishing. Layer feed formulation targets 16-18% protein, while broiler starter feed targets 22-24% protein.

What is the feed conversion ratio (FCR) for poultry?

Poultry has the best FCR of all livestock species. Broiler chickens achieve FCR of 1.5-1.8, meaning 1.5-1.8 lbs of feed produce 1 lb of weight gain. Turkeys have FCR of 2.0-2.5, ducks 2.0-2.5. Improving FCR through genetics, nutrition, and management is a primary focus in commercial poultry production.

How much feed does a laying hen need per day?

A laying hen consumes approximately 100-130 grams (0.22-0.29 lbs) of feed per day. Daily intake varies with breed (Leghorns eat less than Rhode Island Reds), egg production rate, ambient temperature (higher intake in cold weather), and feed energy density. Layer feed should contain 16-18% protein, 3.5-4.5% calcium, and adequate phosphorus.

What is the difference between broiler and layer feed?

Broiler feed is higher in protein (starter 22-24%, grower 20-21%, finisher 18-19%) to support rapid muscle growth and is higher in energy. Layer feed has moderate protein (16-18%) but higher calcium (3.5-4.5%) for eggshell formation. Feeding broiler feed to layers can cause kidney damage from excess protein and uric acid.

/ /Poultry Feed Calculator

Poultry Feed Calculator

Calculate precise feed requirements for your poultry flock. Supports broilers, layers, turkeys, ducks, and quail across different growth stages with accurate daily intake estimates and cost projections.

Inputs

Poultry Type / Age

Number of Birds

Feed Cost ($ per kg)

Time Period (days)

Results

Daily Intake per Bird (g):125

Daily Intake per Bird (kg):0.125

Total Daily Feed (kg):12.50

Total Feed for 30 days (kg):375.0

Feed per Bird (30 days, kg):3.75

Total Feed Cost:$150.00

Nutrition Target: Recommended protein: 17% for this stage. Estimated daily cost per bird: $1.500. Feed cost per dozen eggs (for layers): $0.15 based on 300 eggs/year.

Production Planning: For 100 birds over 30 days: 243.8 kg of corn, 93.8 kg of soybean meal, and 37.5 kg of premix/minerals needed for a typical ration.

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References

Penn State Extension: Poultry Nutrition and Feeding University of Minnesota: Feeding Chickens Merck Veterinary Manual: Poultry Nutrition FAO: Poultry Production Agriculture.com: Poultry Feed Management

Frequently Asked Questions

How do I calculate poultry feed requirements?: Poultry feed requirements are calculated based on bird type, age, body weight, and production stage. Feed intake increases with age from approximately 20 g/day for a week-old chick to 120-150 g/day for a mature laying hen or 180-220 g/day for a broiler at finishing. Layer feed formulation targets 16-18% protein, while broiler starter feed targets 22-24% protein.
What is the feed conversion ratio (FCR) for poultry?: Poultry has the best FCR of all livestock species. Broiler chickens achieve FCR of 1.5-1.8, meaning 1.5-1.8 lbs of feed produce 1 lb of weight gain. Turkeys have FCR of 2.0-2.5, ducks 2.0-2.5. Improving FCR through genetics, nutrition, and management is a primary focus in commercial poultry production.
How much feed does a laying hen need per day?: A laying hen consumes approximately 100-130 grams (0.22-0.29 lbs) of feed per day. Daily intake varies with breed (Leghorns eat less than Rhode Island Reds), egg production rate, ambient temperature (higher intake in cold weather), and feed energy density. Layer feed should contain 16-18% protein, 3.5-4.5% calcium, and adequate phosphorus.
What is the difference between broiler and layer feed?: Broiler feed is higher in protein (starter 22-24%, grower 20-21%, finisher 18-19%) to support rapid muscle growth and is higher in energy. Layer feed has moderate protein (16-18%) but higher calcium (3.5-4.5%) for eggshell formation. Feeding broiler feed to layers can cause kidney damage from excess protein and uric acid.
How do temperature and season affect feed intake?: Feed intake increases 3-5% for every 10�F (6�C) below the thermoneutral zone (65-75�F for adult poultry). In hot weather (above 85�F), feed intake decreases 8-12%, which can reduce egg production and growth rate. Adjust feed formulations seasonally: increase energy in winter, increase nutrients in summer to compensate for lower intake.
What is the average weekly feed consumption for broilers?: Broiler feed consumption by week (modern strains): Week 1: 150 g/bird, Week 2: 350 g, Week 3: 600 g, Week 4: 900 g, Week 5: 1,200 g, Week 6: 1,500 g. Total ~4.7 kg (10.4 lbs) per bird to 6 weeks. Total feed cost represents 65-70% of broiler production costs.
How do I calculate total feed cost for a poultry flock?: Total feed cost = number of birds � daily intake per bird � number of days � cost per unit of feed. For a flock of 1,000 layers, daily intake 120 g/bird, $0.30/kg feed: daily cost = 1,000 � 0.12 kg � $0.30 = $36/day. Annual feed cost � $13,140 for this example.
What are the common feed additives for poultry?: Common additives include: coccidiostats (prevent coccidiosis), probiotics (improve gut health), enzymes (phytase improves phosphorus availability), organic acids (control pathogens), vitamins and mineral premixes, toxin binders (for moldy grain), and growth promoters (in some regions). Always follow withdrawal periods before slaughter.
How do I formulate poultry feed for different growth stages?: Poultry feed formulation changes by stage: Starter (0-3 weeks) 22-24% protein, high energy, medicated for coccidiosis. Grower (3-6 weeks) 20-21% protein, reduced medication. Finisher (6+ weeks) 18-19% protein, no medication for broilers. Layer feed (18+ weeks) 16-18% protein, 3.5-4.5% calcium, 0.4-0.5% available phosphorus. Always use the correct feed for each stage.
What is the calcium requirement for laying hens?: Laying hens require 3.5-4.5% calcium in their diet for eggshell formation. Layer feed should contain 3.5-4.0% calcium with oyster shell or limestone provided as a calcium supplement. Each eggshell contains approximately 2 grams of calcium. Insufficient calcium leads to thin-shelled eggs, increased egg breakage, and can cause cage layer fatigue (osteoporosis) in severe cases.
How does feed form affect poultry performance?: Feed form significantly impacts performance. Pellets improve FCR by 5-10% compared to mash by reducing feed wastage and selective feeding. Crumbles are preferred for young chicks. Whole grains are sometimes used in layer diets to reduce feed costs. Pellet quality (durability, fines percentage) directly affects feed intake and growth uniformity. High fines reduce the benefit of pelleting.
What is the water-to-feed intake ratio for poultry?: Poultry typically drink 1.5-2.5 parts water per part of feed consumed by weight. Water intake doubles in hot weather (above 85�F). Water quality is critical � contaminated water can reduce feed intake by 20-30%. Broilers consume 8-12 gallons of water per 100 birds daily. Layers consume 12-18 gallons per 100 birds daily. Always provide clean, cool water.