Livestock
Feed Conversion Ratio Calculator
Calculate feed conversion ratio (FCR) — pounds of feed per pound of weight gain.
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How to Use This Calculator
Enter the total pounds of feed consumed over a period and the total weight gained by the animal or group during that same period. The calculator returns the feed conversion ratio and feed efficiency percentage.
Why This Matters
Feed conversion ratio is the single most important metric for profitability in livestock finishing operations. Feed typically represents 60-70% of production costs, so even small FCR improvements translate to significant savings.
Methodology
FCR = Total Feed Consumed (lbs) / Total Weight Gain (lbs). Feed Efficiency = (Weight Gain / Feed Consumed) × 100. Lower FCR means better efficiency. Typical benchmarks: beef cattle 6-8:1, pigs 3-4:1, broilers 1.6-2.0:1.
Common Mistakes to Avoid
- Not accounting for feed waste — spilled or refused feed inflates the FCR.
- Comparing FCR across species without understanding that each has different biological efficiency.
- Measuring over too short a period, which gives unreliable results due to gut fill variation.
- Ignoring feed quality differences — a lower FCR on expensive feed may not improve profitability.
Tips & Best Practices
- Lower FCR means more efficient feed conversion.
- Typical FCR: beef cattle 6-8:1, pigs 3-4:1, broilers 1.6-2.0:1.
- Genetics, nutrition, and management all affect FCR.