Total Feed Estimator
Feed Needed to Reach Market Weight
Enter your pig's current weight and target weight. The calculator uses stage-based feed conversion ratios (nursery, grower, finisher) to estimate total feed required.
Uses midpoint FCR per growth stage: 1.45 (12-50 lbs), 2.25 (50-150 lbs), 3.0 (150+ lbs). Estimates vary with genetics, feed quality, and environment.
Why It Matters
Why Knowing Total Feed Cost Matters
Feed accounts for 60-70% of the total cost of raising a pig to market weight. Whether you are raising one backyard hog or managing a 500-head finishing barn, knowing the total feed required before you start lets you budget accurately, negotiate bulk purchases, and decide whether a batch is worth the investment.
Many producers track daily intake but overlook the cumulative picture. A pig that eats 5.5 lbs per day for 150 days consumes over 825 lbs of feed total. If feed costs $0.18 per pound, that single pig costs roughly $149 in feed alone. Estimating this number upfront helps you set a breakeven price and avoid surprise losses at sale time.
Stage-Based FCR
How the Stage-Based FCR Calculation Works
Pigs do not convert feed at a flat rate. Young pigs are highly efficient, converting almost every calorie into lean growth. As they mature, more energy goes to maintenance and fat deposition, so the feed conversion ratio (FCR) rises. This calculator splits the growth curve into three stages and applies the midpoint FCR for each one.
| Stage | Weight Range | FCR Range | Midpoint Used |
|---|---|---|---|
| Nursery | 12 - 50 lbs | 1.3 - 1.6 | 1.45 |
| Grower | 50 - 150 lbs | 2.0 - 2.5 | 2.25 |
| Finisher | 150+ lbs | 2.8 - 3.2 | 3.0 |
For example, taking a 50 lb feeder pig to 280 lbs: the grower stage (50-150 lbs) needs 100 lbs of gain at 2.25 FCR = 225 lbs of feed; the finisher stage (150-280 lbs) needs 130 lbs of gain at 3.0 FCR = 390 lbs of feed. Total: about 615 lbs.
Cost Tips
Estimating Your Feed Cost
Once you know the total feed needed, multiply by your local price per unit. Feed prices vary widely by region, ingredient mix, and whether you buy bagged retail or bulk from a mill. As a rough guide, a complete hog feed in the U.S. typically ranges from $0.14 to $0.22 per pound ($300-$480 per ton).
Buying in bulk (1-ton totes or mill-direct delivery) can save 15-25% over bagged feed. If you grow your own grain, your cost per pound drops further, but remember to include grinding, mixing, and any supplemental premix costs in your calculations.
Variables
What Changes Feed Requirements
- Breed. Modern commercial crosses (Yorkshire x Duroc) convert feed 10-15% more efficiently than heritage breeds like Berkshire, Tamworth, or Large Black. Choose genetics that match your market.
- Season. Cold weather increases feed requirements by 10-15%. Pigs below their thermoneutral zone (60-70 F for finishers) burn extra calories for warmth. Summer heat can reduce intake and slow growth.
- Housing. Open-air pasture pigs use more energy moving and thermoregulating than pigs in climate-controlled barns. Expect 5-10% higher feed totals for outdoor systems.
- Health. Respiratory disease, PRRS, and parasites all reduce feed efficiency. A healthy herd with a solid vaccination program will consistently hit lower FCR numbers.
FAQ
Frequently Asked Questions
How much feed does it take to raise a pig to market weight?
Raising a pig from about 50 lbs to a 280 lb market weight typically requires 650 to 750 lbs of feed. The exact amount depends on genetics, feed quality, and environmental conditions. This calculator uses stage-based FCR values to give you a more precise estimate for your specific starting and ending weights.
What is FCR and why does it change as pigs grow?
FCR (Feed Conversion Ratio) measures how many pounds of feed a pig needs to gain one pound of body weight. Young pigs in the nursery stage convert feed efficiently at about 1.3-1.6:1, while finishing pigs need 2.8-3.2 lbs of feed per pound of gain. This happens because larger pigs use more energy for body maintenance and deposit more fat relative to lean tissue.
How do I estimate feed cost for raising a pig?
Multiply the total feed needed (from this calculator) by your local feed price per pound or kilogram. For example, if you need 700 lbs of feed and pay $0.18/lb, your total feed cost is about $126. Feed typically accounts for 60-70% of the total cost of raising a pig to market weight.
Does breed affect how much feed a pig needs?
Yes. Modern commercial breeds like Yorkshire-Duroc crosses have been selected for feed efficiency and may have an FCR 10-15% better than heritage breeds such as Berkshire or Tamworth. Heritage breeds grow slower and often require more total feed to reach the same market weight.