🧪 What to Do If Your Hay Tests Low in Protein or Energy.
🌾 Introduction
You’ve sent your hay sample for testing — and the results come back disappointing. Maybe the protein level is lower than expected, or the energy value is below ideal for your livestock. Don’t worry — low test results don’t mean your hay is useless.
In this guide, we’ll walk through what to do when hay tests low in protein or energy, including blending techniques, supplements, and smart feeding strategies to keep your animals thriving.
🧬 Why Hay Tests Low in Nutrients
Hay quality depends on timing, maturity, and storage conditions. Common causes of low protein or energy include:
- Late cutting: Overmature plants have more stems, less leaf, and lower digestibility.
- Poor soil fertility: Low nitrogen or potassium reduces growth and nutritional value.
- Weather stress: Drought or excessive rain weakens plant nutrition.
- Leaching during storage: Uncovered bales lose soluble nutrients over time.
Understanding why your hay is low helps prevent future losses.
👉 External link: University of Wisconsin Extension — Factors Affecting Forage Quality
🧾 Step 1: Identify What’s Low — Protein, Energy, or Both
Hay tests typically report:
- Crude Protein (CP): Indicates nitrogen content and overall protein level.
- Total Digestible Nutrients (TDN): A measure of available energy.
- Neutral Detergent Fiber (NDF): Higher NDF = lower digestibility.
Compare results to animal requirements:
| Livestock Type | CP (%) | TDN (%) |
|---|---|---|
| Dairy cows (lactating) | 16–18 | 60–70 |
| Beef cows (maintenance) | 8–10 | 55–60 |
| Horses (light work) | 10–12 | 55–60 |
| Goats/Sheep | 12–16 | 58–65 |
If your hay falls below these levels, it’s time to adjust your feeding plan.
🌾 Step 2: Blend Hay for Balanced Nutrition
If possible, blend high- and low-quality hay to reach target nutrition.
- Mix high-protein alfalfa with lower-quality grass hay.
- Feed better hay to animals with higher nutrient needs (young, lactating, or working animals).
- Use lower-quality hay for maintenance or bedding.
Blending ensures nothing goes to waste and keeps nutrient intake consistent.
👉 External link: Alberta Agriculture — Hay Mixing for Balanced Feed
🐄 Step 3: Supplement with Protein & Energy Sources
Low hay doesn’t mean low productivity — supplements can close the gap.
✅ Protein Supplements
- Soybean meal (44–48% CP)
- Cottonseed meal
- Distillers grains (DDGs)
- Legume hay or pellets (alfalfa, clover)
✅ Energy Supplements
- Grains like corn, barley, or oats
- Molasses (adds palatability and quick energy)
- Commercial cattle cubes or lick tubs
Tip: Always balance rations with forage analysis results to avoid overfeeding energy or protein.
🧠 Step 4: Adjust Feeding Strategy
- Feed low-protein hay after high-energy supplements to improve digestion.
- Provide free-choice mineral blocks for trace nutrients.
- Maintain ample clean water — low-quality hay increases water intake needs.
- Feed higher-quality hay first to stimulate appetite and digestion.
🌿 Step 5: Long-Term Solutions — Improve Future Hay Quality
To prevent low-protein or low-energy hay in future harvests:
- Fertilize based on soil tests (especially nitrogen).
- Cut earlier for optimal leaf-to-stem ratio.
- Cure and store properly to avoid nutrient loss.
- Rotate hay species — legumes naturally boost protein levels.
👉 External link: NRCS — Forage Management for Quality Improvement
🌾 Final Thoughts
Low-protein or low-energy hay isn’t a loss — it’s an opportunity to optimize feeding. By blending bales, using smart supplements, and improving harvest timing, you can turn under performing hay into a balanced, cost-effective feed source that keeps your livestock healthy.
🌾 About Premium Hay Supply
At Premium Hay Supply, every bale we sell is tested for nutritional value — so you know exactly what your animals are getting. Whether you need high-protein alfalfa or balanced grass blends, we’re here to help you build smarter feeding plans and stronger herds.
