Topics:
Animal Nutrition, Animal Refresher
FCR of Different Livestock
Feed conversion ratios (FCR) of broiler, pig, and cattle are respectively:
- 2, 3, 4
- 2, 3, 2
- 2, 3, 5 — Correct Answer
- 1, 2, 3
Explanation:
Correct Answer: Broiler = 2, Pig = 3, Cattle = 5
Feed Conversion Ratio (FCR) = kg feed consumed / kg live weight gained. The approximate FCR values are: Broiler ≈ 2, Pig ≈ 3, and Cattle ≈ 5. Lower FCR indicates more efficient feed conversion to body weight.
Feed Conversion Ratio by Species
| Species | Approximate FCR | Efficiency |
|---|---|---|
| Broiler (poultry) | ~2 (1.8–2.2) | Most efficient |
| Pig | ~3 (2.5–3.5) | Moderately efficient |
| Cattle (beef) | ~5 (4.5–7) | Least efficient |
| Layer hens (for eggs) | ~2 kg feed/dozen eggs | High efficiency per unit output |
Why Cattle Have Higher FCR
- Cattle are ruminants → energy lost as CH₄ (~7% GEi) and heat of fermentation.
- Larger body size → higher maintenance energy requirement per unit of production.
- Slower growth rate and older age at slaughter vs broilers.
- Broilers have been genetically selected for rapid, efficient lean tissue deposition.
Why Other Options Are Wrong
- 2, 3, 4 → cattle FCR is ~5, not 4; 4 underestimates cattle inefficiency.
- 2, 3, 2 → cattle cannot match broiler FCR; they are far less efficient.
- 1, 2, 3 → FCR of 1 for broilers would mean 1 kg feed = 1 kg gain; not achievable in practice.
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
