Topics:
Animal Nutrition, Animal Refresher
Digestibility Increase via Urea Treatment
Digestibility of Untreated straw & urea treated straw are respectively:
- 46% & 70% — Correct Answer
- 10% & 50%
- 30% & 60%
- None
Explanation:
Correct Answer: 46% & 70%
Urea treatment (ammoniation) of straw dramatically improves its digestibility by hydrolyzing the hydrogen bonds between hemicellulose and lignin, disrupting the cell wall structure and making polysaccharides more accessible to rumen microbes.
Straw Improvement by Urea Treatment (from notes)
| Parameter | Normal Straw | Urea-Treated Straw |
|---|---|---|
| Digestibility | 46% | 70% |
| DCP% | 0% | 4–5% |
| TDN% | 40% | 50% |
Urea Treatment Protocol for Dry Roughage (Straw)
- Rate: 4% of straw = 100 kg straw + 40 L water + 4 kg urea
- Water:Urea ratio = 10:1
- Succulent roughage (silage): urea @ 0.5% of wet material
- Ration: urea @ 1% of total DM
- Concentrate: up to 3% of total concentrate
📚 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.
