Topics:
Animal Nutrition, Animal Refresher
Gross Energy Content of Methane
Gross energy content of methane is:
- 10.34 Kcal/g
- 12.34 Kcal/g
- 13.34 Kcal/g — Correct Answer
- None
Explanation:
Correct Answer: 13.34 Kcal/g
The Gross Energy (GE) or heat of combustion of methane (CH₄) is 13.34 Kcal/g. This represents the total heat released when one gram of methane is completely combusted.
Gross Energy Values of Key Nutrients
| Substance | GE (Kcal/g) |
|---|---|
| Carbohydrate | 4.15 |
| Protein | 5.65 |
| Fat | 9.4 |
| Methane (CH₄) | 13.34 |
Energy Equivalents — Key Formulas
- 1 kg TDN = 4.4 Mcal of Digestible Energy (DE)
- 1 kg TDN = 3.6 Mcal of Metabolic Energy (ME) [because DE × 0.82 = ME]
- 1 kg TDN = 0.86 Starch Equivalent
- 0.32 kg TDN required per litre of milk production in cow
Why Other Options Are Wrong
- 10.34 Kcal/g → no standard nutrient has this GE value
- 12.34 Kcal/g → incorrect; sometimes confused with GE of fat (9.4) or other substances
- None → incorrect; 13.34 Kcal/g is well established for methane
📚 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.
