Topics:
Animal Nutrition, Animal Refresher
Preparation for Urea Straw Treatment
Urea treatment of 100 kg of straw is done by:
- 4 Kg urea + 40 liters of water — Correct Answer
- 1 Kg urea + 40 liters of water
- 5 Kg urea + 40 liters of water
- None
Explanation:
Correct Answer: 4 kg urea + 40 litres of water
The standard urea treatment of 100 kg straw requires 4 kg urea dissolved in 40 litres of water. This represents a 4% urea treatment on a straw dry weight basis. The water:urea ratio of 10:1 is critical for uniform distribution and optimal NH₃ release for cell wall degradation.
Urea-Treated Straw — Preparation Protocol
| Component | Quantity (per 100 kg straw) |
|---|---|
| Urea | 4 kg (4% of straw DM) |
| Water | 40 litres (Water:Urea = 10:1) |
| Treatment period | Stack, cover airtight for 3–4 weeks |
| Ammonia source | Urea hydrolysis → NH₃ + CO₂ |
Improvement from Urea Treatment
| Parameter | Normal Straw | Urea-Treated Straw |
|---|---|---|
| DCP% | 0% (Nil) | 4–5% |
| TDN% | ~40% | ~50% |
| Digestibility% | ~46% | ~70% |
Why Other Options Are Wrong
- 1 kg urea + 40 litres water → only 1% urea treatment — insufficient to significantly improve nutritive value.
- 5 kg urea + 40 litres water → 5% urea treatment — exceeds standard; wastes urea and may reduce palatability.
- None → 4 kg urea + 40 litres water is the textbook standard formula.
📚 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.
