Topics:
Animal Nutrition, Animal Refresher
Comparing Hay and Silage
Which of the following is/are true about hay and silage?
- Nutritive value of silage is generally more than that of hay.
- Losses during conservation are high in hay making.
- Urea is incorporated @ 1% & salt is added @ 0.5% during silage making.
- All the above — Correct Answer
Explanation:
Correct Answer: All the above
All three statements comparing hay and silage are accurate: (1) silage has higher nutritive value than hay, (2) hay making has higher losses due to weather and sun-drying, and (3) urea @ 1% + salt @ 0.5% are added during silage making to improve N content and palatability.
Silage vs Hay — Comprehensive Comparison
| Parameter | Hay | Silage |
|---|---|---|
| Nutritive value | Lower (losses during drying) | Higher ✓ |
| Conservation losses | High (weather, sun-bleaching) | Lower (sealed anaerobic) |
| Vitamin A loss | Up to 80% | Minimal |
| Vitamin D content | High (UV sun-drying) | Low |
| Moisture content | 12–14% | 60–70% |
| Additives | None routinely | Urea 1% + Salt 0.5% |
Why Silage Has Higher Nutritive Value
- Anaerobic fermentation preserves most of the original plant nutrients.
- Sun-drying in hay making oxidizes carotenes (Vitamin A precursors) and causes Maillard browning of lysine.
- Field losses (leaf shatter, rain leaching) can be 20–40% for hay vs 5–15% for silage.
Why Other Options Are Wrong
- Each individual statement is correct — so All the above is the only complete answer.
📚 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.
