Topics:
Animal Nutrition, Animal Refresher
Methods of Energy Estimation
Which of the following is NOT a method for estimation of energy content of feed?
- C-N balance technique
- By Bomb calorimeter
- Nitrogen balance technique — Correct Answer
- By calculating TDN from digestion trial
Explanation:
Correct Answer (NOT a method): Nitrogen balance technique
The Nitrogen balance technique is used for estimation of protein quality, NOT energy content of feed. The correct methods for energy estimation are: C-N balance, Bomb calorimeter, TDN from digestion trial, and from chemical composition.
Methods for Energy vs Protein Estimation
| Purpose | Method |
|---|---|
| Energy content | C-N Balance technique |
| Energy content | Bomb calorimeter |
| Energy content | TDN from digestion trial |
| Energy content | From chemical composition |
| Protein quality | Nitrogen balance ← NOT energy |
| Protein quality | Biological value (BV) |
| Protein quality | Protein Efficiency Ratio (PER) |
Why Other Options Are Wrong
- C-N balance → IS a valid energy estimation method (measures C oxidized to CO₂).
- Bomb calorimeter → IS used; measures heat of complete combustion = gross energy.
- TDN from digestion trial → IS used; TDN × 4.4 Mcal = digestible energy.
📚 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.
