Hay Testing: How to Read and Understand Forage Reports | Premium Hay Supply
Hay Testing: How to Read and Understand Forage Reports
When it comes to feeding livestock, not all hay is created equal. Two bales that look identical can have vastly different nutritional values. That’s why hay testing is essential—it gives you precise data about your hay’s nutrient profile, so you can feed smarter, reduce waste, and ensure animal health.
At PremiumHaySupply.com, we believe every hay buyer should know how to read and understand a forage analysis report. Here’s how to make sense of it.
1. Why Hay Testing Matters
Visual inspection alone can’t reveal the full picture. Lab testing provides objective numbers for nutrients like:
- Crude Protein (CP)
- Fiber (ADF & NDF)
- Moisture
- Energy (TDN)
- Minerals (Calcium, Phosphorus, etc.)
Testing helps you:
- Match hay to your animals’ nutritional needs
- Detect low-quality or spoiled batches
- Price your hay fairly based on its true value
Learn more about standardized testing from the National Forage Testing Association
2. Key Components in a Forage Report
Here’s what to look for when reading your hay analysis:
| Term | Meaning | Ideal Range (for horses & cattle) |
| Dry Matter (DM) | Portion of hay that isn’t water | 85–90% |
| Crude Protein (CP) | Total protein content | 10–20% |
| Acid Detergent Fiber (ADF) | Lower = more digestible | <40% |
| Neutral Detergent Fiber (NDF) | Indicates intake potential | <60% |
| Total Digestible Nutrients (TDN) | Measures energy level | 55–65% |
| Relative Feed Value (RFV) | Overall hay quality index | 100+ = good |
The lower the fiber and higher the protein and TDN, the better the quality.
3. How to Take a Proper Hay Sample
To get accurate results:
- Use a hay probe to collect samples from at least 10–15 bales.
- Mix and seal them in an airtight plastic bag.
- Label with cutting date, hay type, and field location.
- Send to a certified forage testing lab.
Never send loose flakes or outer bale samples—they don’t represent the whole batch.
4. Interpreting the Results
- High CP (15%+): Excellent for lactating or performance animals.
- Moderate ADF/NDF: Balanced hay that’s digestible and safe.
- Low TDN or High Fiber: Suitable for maintenance animals but not ideal for growth or performance.
Use these numbers to adjust your feeding program or mix hays for balanced nutrition.
5. Choosing Hay Based on Test Results
Once you understand the report, match hay to your livestock:
- 🐎 Horses: Prefer lower NDF and dust-free hay.
- 🐄 Cattle: Need higher TDN for growth and milk production.
- 🐐 Goats/Sheep: Thrive on moderate-fiber, protein-rich blends.
Ask your supplier for test results before purchase—trusted sellers provide full transparency.
🏁 Conclusion
A forage analysis report is your best tool for buying, feeding, and managing hay effectively. By learning to read and interpret test results, you’ll make better choices for your animals and your budget.
At PremiumHaySupply.com, every bale we sell is tested, graded, and guaranteed for consistent quality.
