Topics:
Animal Nutrition, Animal Refresher
Instrument for Measuring Gross Energy
Instrument used for measuring gross energy of a feed:
- Bomb calorimeter — Correct Answer
- Kjeldahl apparatus
- Butyrometer
- None
Explanation:
Correct Answer: Bomb calorimeter
A Bomb calorimeter measures the Gross Energy (GE) of a feed by complete combustion. The feed sample is burned in a sealed chamber under high-pressure oxygen, and the heat released is measured. GE values: Carbohydrate = 4.15 kcal/g, Fat = 9.4 kcal/g, Protein = 5.65 kcal/g.
Instruments Used in Feed Analysis
| Instrument | Purpose |
|---|---|
| Bomb calorimeter | Gross Energy measurement |
| Kjeldahl apparatus | Crude Protein (nitrogen) estimation |
| Soxhlet apparatus | Ether Extract (fat) estimation |
| Muffle furnace | Ash determination (600°C, 2 hrs) |
| Butyrometer | Fat % in milk (Gerber method) |
Why Other Options Are Wrong
- Kjeldahl apparatus → used for nitrogen/crude protein estimation, not energy.
- Butyrometer → used to measure fat percentage in milk, not feed energy.
- None → bomb calorimeter is the definitive instrument for GE.
📚 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.
