What Is Feed Conversion Ratio (FCR)?
Feed Conversion Ratio (FCR) measures the efficiency with which birds convert feed into body weight (in broilers) or eggs (in layers). It is calculated as:
FCR = Total feed consumed ÷ Total weight gain (or egg mass produced)
A lower FCR means better feed efficiency — the bird is converting more feed into useful output. For example, an FCR of 1.6 means the bird consumed 1.6 kg of feed to gain 1 kg of body weight.
Why FCR Matters
Feed typically represents 65-75% of total production costs in poultry farming. Even small improvements in FCR can have significant financial impact. For example, improving FCR by 0.1 points across a large flock can save lakhs of rupees per production cycle.
Typical FCR Values
Broilers (modern genetics) — : 1.5 to 1.8 at market ageLayers — : 2.0 to 2.5 kg feed per kg egg massValues vary by genetics, management, climate, and health statusFactors Affecting FCR
Genetics
Modern poultry genetics have dramatically improved FCR over decades. Using proven, high-performing breeds is the foundation of good FCR.
Nutrition
Feed quality — : Balanced nutrition with proper protein, energy, vitamins, and mineralsFeed form — : Pellets generally produce better FCR than mashAnti-nutritional factors — : Mycotoxins and poor-quality ingredients worsen FCRHealth
Disease — : Any disease — even subclinical — worsens FCR by diverting nutrients from growth to immune responseGut health — : Healthy gut flora improves nutrient absorption and FCRLiver health — : The liver processes nutrients; liver dysfunction impairs feed utilisationManagement
Temperature — : Heat stress reduces feed intake and worsens FCRWater quality — : Poor water quality reduces intake and gut healthLighting — : Proper lighting programmes support optimal feed intake patternsStocking density — : Overcrowding increases stress and reduces FCRStrategies to Improve FCR
**Use quality feed** with balanced nutrition and verified ingredient quality**Maintain gut health** with probiotics, organic acids, and clean water**Support liver function** with liver tonics during demanding production phases**Provide vitamin and mineral supplementation** during stress periods**Manage water quality** with regular testing and water acidifiers**Control temperature** through proper ventilation and cooling**Maintain biosecurity** to prevent disease-related FCR losses**Monitor FCR regularly** and investigate sudden changesSummary
FCR is the key profitability metric in poultry farming. Improving FCR requires a holistic approach combining good genetics, balanced nutrition, proactive health management, and optimal environmental conditions. Regular monitoring and prompt attention to factors that affect FCR will improve farm profitability.
