Alfalfa Nutrition Facts & Feed Value
Complete Nutritional Analysis for Livestock Feed Management
Comprehensive guide to alfalfa's protein content, fiber composition, vitamins, minerals, and energy values for optimal livestock nutrition
Understanding Alfalfa Nutrition
Alfalfa (Medicago sativa) stands as one of the most valuable forage crops for livestock nutrition worldwide. Known as the "Queen of Forages," alfalfa provides an exceptionally balanced nutritional profile that makes it ideal for dairy cattle, beef cattle, horses, poultry, and other livestock. Kohenoor International's premium alfalfa varieties are specifically bred to maximize nutritional content while ensuring consistent quality across growing seasons.
The nutritional value of alfalfa extends beyond basic protein and fiber content. Alfalfa contains a complex array of vitamins, minerals, and bioactive compounds that support animal health, productivity, and reproduction. Understanding these nutritional components is essential for formulating balanced feed rations, optimizing livestock performance, and maximizing return on investment for farming operations.
Alfalfa Nutritional Composition
Macronutrients
Alfalfa's macronutrient profile consists of proteins, carbohydrates (primarily fiber), and fats. The balance of these components varies based on growth stage, harvest timing, and environmental conditions. Bloom stage alfalfa offers different nutritional characteristics than early vegetative stage alfalfa, requiring careful management to achieve target nutritional goals.
| Nutrient Component | Boot Stage (%) | Early Bloom (%) | Full Bloom (%) | Late Bloom (%) |
|---|---|---|---|---|
| Crude Protein | 23-25% | 20-22% | 17-19% | 15-17% |
| Crude Fiber | 22-24% | 25-27% | 28-30% | 31-33% |
| Acid Detergent Fiber (ADF) | 28-30% | 32-34% | 36-38% | 40-42% |
| Neutral Detergent Fiber (NDF) | 38-40% | 42-44% | 46-48% | 50-52% |
| Ether Extract (Fat) | 2.5-3.0% | 2.0-2.5% | 1.8-2.2% | 1.5-2.0% |
| Ash | 10-12% | 9-11% | 8-10% | 7-9% |
| Carbohydrates (NFE) | 44-46% | 41-43% | 38-40% | 35-37% |
Micronutrients & Vitamins
Alfalfa is exceptionally rich in micronutrients, providing essential vitamins and minerals that support animal metabolism, immune function, and productivity. Fresh and early-cut alfalfa contains higher vitamin concentrations, particularly carotenoids (converted to Vitamin A in animals) and vitamin E.
| Nutrient | Concentration | Function in Livestock | Adequacy for Livestock |
|---|---|---|---|
| Carotene (Vitamin A) | 150-200+ mg/kg DM | Vision, reproduction, immune function | Excellent |
| Vitamin E (α-tocopherol) | 20-40 IU/kg DM | Antioxidant, muscle function, reproduction | Very Good |
| Vitamin K | 2-5 mg/kg DM | Blood coagulation, bone metabolism | Good |
| Vitamin B Complex | Variable (B12: trace) | Enzyme function, energy metabolism | Adequate |
| Calcium | 1.2-1.5% DM | Bone, muscle, nervous system | Excellent |
| Phosphorus | 0.2-0.3% DM | Bone formation, energy metabolism | Adequate |
| Potassium | 2.0-2.5% DM | Osmotic balance, muscle function | Excellent |
| Magnesium | 0.25-0.35% DM | Enzyme function, muscle contraction | Adequate |
| Sulfur | 0.18-0.25% DM | Amino acid synthesis, enzyme function | Adequate |
| Iron | 100-250 mg/kg DM | Oxygen transport, enzyme function | Good |
| Zinc | 20-40 mg/kg DM | Immune function, wound healing | Adequate |
| Copper | 8-15 mg/kg DM | Iron metabolism, coat quality | Adequate |
| Manganese | 40-60 mg/kg DM | Bone development, reproduction | Good |
| Cobalt | 0.1-0.3 mg/kg DM | Vitamin B12 synthesis, rumen function | Adequate |
Energy Values
Energy content in alfalfa is expressed using different metrics depending on livestock type and feeding standards. The primary energy measures include Metabolizable Energy (ME), Net Energy for Lactation (NEL), and Total Digestible Nutrients (TDN).
| Growth Stage | TDN (%) | ME (Mcal/kg) | NEL (Mcal/kg) | NEm (Mcal/kg) | NEg (Mcal/kg) |
|---|---|---|---|---|---|
| Pre-Bloom | 65-70% | 2.6-2.8 | 1.65-1.75 | 1.85-1.95 | 1.15-1.25 |
| Early Bloom | 60-65% | 2.4-2.6 | 1.50-1.65 | 1.70-1.85 | 1.00-1.15 |
| Full Bloom | 55-60% | 2.2-2.4 | 1.35-1.50 | 1.55-1.70 | 0.85-1.00 |
| Late Bloom/Mature | 48-55% | 1.9-2.2 | 1.15-1.35 | 1.35-1.55 | 0.60-0.85 |
Digestibility and Feed Efficiency
Digestibility is a critical factor determining the true nutritional value of alfalfa for livestock. Even though alfalfa contains high protein content, the value depends on how completely animals can digest and absorb these nutrients.
Key Digestibility Metrics
- In Vitro True Digestibility (IVTD): Measures how much of the forage dry matter is digestible under laboratory conditions. Quality alfalfa achieves 70-80% IVTD, indicating high nutritional availability.
- Dry Matter Digestibility (DMD): Indicates the percentage of dry matter that is digestible. Ranges from 55-70% depending on growth stage and management.
- Neutral Detergent Fiber Digestibility (NDFD): Measures fiber digestibility, critical for ruminant productivity. Quality alfalfa shows 55-65% NDFD, supporting efficient digestion.
- Crude Protein Digestibility: Typically 75-85% for alfalfa, indicating excellent amino acid availability for animal tissues.
Alfalfa vs. Other Forage Crops
While many forage options exist for livestock feeding, alfalfa stands out for its superior nutritional profile. The following comprehensive comparison illustrates why alfalfa is the preferred choice for most livestock operations.
| Forage Type | Crude Protein (%) | Digestibility (%) | ADF (%) | Calcium (%) | Energy (NEL) | Cost Efficiency |
|---|---|---|---|---|---|---|
| Alfalfa (Early Bloom) | 20-22% | 68-72% | 32-34% | 1.3-1.5% | 1.50-1.65 | Premium |
| Alfalfa (Full Bloom) | 17-19% | 62-66% | 36-38% | 1.2-1.4% | 1.35-1.50 | Premium |
| Timothy Hay (Boot) | 14-16% | 62-65% | 34-36% | 0.4-0.5% | 1.40-1.50 | Moderate |
| Timothy Hay (Bloom) | 10-12% | 55-60% | 38-42% | 0.3-0.4% | 1.20-1.35 | Moderate |
| Bermuda Grass Hay | 9-12% | 55-62% | 38-42% | 0.3-0.4% | 1.15-1.30 | Moderate |
| Clover/Alfalfa Mix | 16-18% | 64-68% | 34-37% | 1.0-1.2% | 1.40-1.55 | Premium |
| Corn Silage | 8-10% | 70-75% | 24-28% | 0.2-0.3% | 1.65-1.75 | High Energy |
| Orchardgrass Hay | 11-13% | 58-62% | 36-40% | 0.35-0.45% | 1.25-1.40 | Moderate |
| Red Clover Hay | 14-16% | 62-66% | 36-38% | 0.8-1.0% | 1.35-1.50 | Premium |
Why Alfalfa Outperforms Other Forages
- Superior Protein Content: Alfalfa delivers 2-3 times more protein than grass hays, reducing grain supplement requirements and lowering overall feed costs.
- Complete Mineral Profile: Alfalfa provides balanced calcium, potassium, and trace minerals without requiring supplementation in many cases.
- Vitamin Richness: Exceptional levels of carotenoids and vitamin E support livestock health and immune function naturally.
- Feed Palatability: Livestock demonstrate strong preference for quality alfalfa, increasing dry matter intake and overall productivity.
- Milk Production Support: Dairy operations particularly benefit from alfalfa's complete nutrient profile, consistently achieving higher milk yields and quality.
- Flexible Use: Suitable for all livestock classes from young animals to geriatric animals, making it uniquely versatile.
- Forage-Based Systems: Supports sustainable, reduced-concentrate feeding systems while maintaining productivity.
Protein Quality and Amino Acid Profile
Alfalfa's protein quality is as important as its protein quantity. The amino acid composition and protein digestibility determine how effectively livestock can utilize alfalfa protein for tissue growth, milk production, and reproduction.
Amino Acid Content
Quality alfalfa typically contains the following amino acid profile (as percentage of crude protein on dry matter basis):
| Amino Acid | Content (% CP) | Function |
|---|---|---|
| Lysine | 4.8-5.2% | Critical for muscle growth, reproduction, immune function |
| Methionine | 1.8-2.2% | Protein synthesis, wool growth, milk production |
| Leucine | 7.5-8.0% | Muscle protein synthesis, energy metabolism |
| Isoleucine | 4.2-4.8% | Immune function, muscle development |
| Valine | 5.0-5.5% | Muscle protein synthesis, energy metabolism |
| Glutamic Acid | 10.2-10.8% | Energy metabolism, nitrogen balance |
| Aspartic Acid | 8.0-8.5% | Amino acid metabolism, energy production |
| Alanine | 5.2-5.8% | Energy metabolism, glucose production |
Protein Availability
The true value of alfalfa protein depends on how much can be utilized by ruminant animals. Ruminants require degradable protein for rumen microbe function and undegradable (bypass) protein for tissue synthesis.
- Rumen Degradable Protein (RDP): Typically 65-75% of total alfalfa protein, supporting efficient rumen fermentation and microbial protein synthesis.
- Rumen Undegradable Protein (RUP/Bypass): 25-35% of total protein passes to the small intestine where it's highly digestible, supporting meat and milk production.
- Intestinal Digestibility: Alfalfa protein shows 80-90% intestinal digestibility, ensuring excellent availability of amino acids for animal tissues.
Fiber Characteristics and Rumen Health
Alfalfa's fiber content plays a critical role in maintaining rumen health while providing essential nutrients. Unlike poor-quality forages, alfalfa combines digestible fiber with adequate bulk for optimal rumen function.
Fiber Components
- Crude Fiber (CF): 22-33% depending on maturity, providing essential structural material for rumen microbial function.
- Neutral Detergent Fiber (NDF): 38-52% of DM, relating to forage intake. Alfalfa's optimal NDF content supports adequate intake without limiting energy.
- Acid Detergent Fiber (ADF): 28-42% of DM, directly related to digestibility. Quality alfalfa maintains relatively low ADF for fiber-rich forage.
- Lignin: 5-9% of DM, limiting fiber digestibility. Lower lignin content in early-harvested alfalfa improves overall digestibility.
Benefits for Rumen Health
- Promotes healthy rumen pH through effective fiber that stimulates chewing and saliva production
- Supports beneficial rumen microbe populations through optimal fiber structure
- Reduces metabolic disorders like acidosis that occur with concentrated feeding
- Improves milk fat percentage and composition in dairy cattle
- Supports efficient digestion of concurrent grain supplements
Kohenoor International Alfalfa Varieties
Kohenoor International specializes in premium alfalfa seed varieties specifically bred for superior nutritional content and consistent yield. Our varieties are selected for their exceptional protein levels, digestibility, and adaptability to diverse growing conditions.
🌾 KN92
Protein Content: 20-22% CP
Yield: 8-10 tons/hectare
High-yielding variety with exceptional nutritional consistency. Ideal for commercial dairy and beef operations. Superior digestibility and disease resistance.
🌿 TAIZTAR
Protein Content: 21-23% CP
Yield: 9-11 tons/hectare
Premium variety delivering maximum nutritional value. Extended cutting season and excellent stand persistence. Premium choice for intensive operations.
✨ Sardi
Protein Content: 19-21% CP
Yield: 7-9 tons/hectare
Reliable standard variety with consistent performance. Excellent adaptation to varied climates. Popular choice for diverse farming systems.
Each Kohenoor variety is selected for consistent nutritional profiles, ensuring reliable feed value planning. Our seeds receive rigorous testing for germination, purity, and nutritional markers before distribution to farming operations worldwide.
Alfalfa Nutritional Statistics Overview
Frequently Asked Questions About Alfalfa Nutrition
Early bloom or bud stage alfalfa delivers the best nutritional balance, with crude protein typically at 20-22% and digestibility at 68-72%. Harvesting at this stage captures maximum nutrient density before lignin accumulation in later growth stages. Early-harvested alfalfa also contains higher levels of vitamins and carotenoids. For optimal livestock performance, particularly in dairy operations, target harvest when 5-10% of plants show bloom flowers. This timing maximizes the protein-to-fiber ratio and ensures the highest feed value per ton of hay produced.
Alfalfa inclusion rates depend on livestock type and production goals. Dairy cattle typically receive 40-60% alfalfa in forage portions of rations, combined with other forage sources. Beef cattle can sustain on 100% alfalfa for maintenance, though mixing with grass hays extends supply and maintains ruminal health. Horses typically require 50-100% alfalfa depending on age and use. Young growing animals and lactating animals benefit from higher alfalfa inclusion due to its complete nutrient profile. Work with a nutritionist to determine optimal inclusion rates based on your specific livestock class, production stage, and available forage quality.
Yes, significant nutritional variation exists between cutting cycles. First cuttings typically contain 1-3% higher protein and superior digestibility compared to later cuttings, particularly in northern regions where winter dormancy increases nutrient concentration. Second cuttings provide excellent quality if harvested at boot/early bloom stage. Third and subsequent cuttings show progressively lower nutritional content but can still provide good feed value when harvested early. Environmental factors like rain timing, sunshine, and temperature also influence quality within the same cutting. Testing hay quality through laboratory analysis (forage testing) provides accurate data for ration formulation and ensures livestock receive targeted nutrition.
High-quality alfalfa provides an excellent foundation for livestock nutrition, supplying adequate protein, calcium, potassium, and vitamins. However, complete ration balancing typically requires supplementation. Alfalfa is relatively low in energy compared to grain concentrates, so lactating dairy cattle and high-performance animals require energy supplementation. Phosphorus levels may require balancing depending on water mineral content. Trace minerals like cobalt, iodine, and selenium often require supplementation beyond what alfalfa provides. Individual livestock requirements vary by production stage (growing, lactating, pregnant), so consulting a ruminant nutritionist ensures all nutritional needs are met while maximizing the value of alfalfa in the ration.
Visual and sensory assessment provides initial clues: high-quality alfalfa appears bright green with fine stems, fresh smell, and leafy appearance. Pre-bloom harvested hay shows more leaves relative to stems. Laboratory forage testing provides definitive nutritional data including crude protein, ADF, NDF, digestibility (IVTD), mineral content, and energy values. Investment in forage testing typically returns 5-10x through improved feed purchasing decisions and ration optimization. Request samples from multiple bales across your storage area to ensure representative sampling. Kohenoor International recommends forage testing as standard practice for any operation feeding more than basic maintenance levels to animals.
Harvest stage is the primary factor affecting nutritional value, with early-harvested alfalfa consistently showing 2-4% higher protein and 5-8% higher digestibility than late-harvested material. Soil fertility, particularly nitrogen and phosphorus levels, influence protein content and yield. Environmental stress like drought reduces protein percentage while increasing fiber concentrations. Pest damage and disease pressure influence plant maturity and nutritional composition. Curing and storage conditions impact vitamin retention, particularly carotenoids and vitamin E. Variety selection affects baseline nutritional potential, with Kohenoor International's premium varieties KN92 and TAIZTAR consistently delivering superior nutritional profiles. Geographic growing region influences seasonal nutritional patterns through temperature and moisture effects on plant development.
Practical Nutritional Applications
Dairy Cattle Nutrition
Quality alfalfa hay is the foundation of dairy rations because it provides the protein, calcium, and energy needed for milk production while supporting rumen health. A typical dairy ration might include 50% alfalfa hay combined with grass hay and limited grain supplements. Early-cut alfalfa hay allows higher milk production with reduced grain inputs. The palatability of quality alfalfa also encourages consistent dry matter intake, critical for steady milk production. Lactating dairy cattle benefit particularly from alfalfa's balanced mineral profile, supporting milk quality and reproduction.
Beef Cattle Feeding
Beef cattle operations utilize alfalfa for both growing and finishing phases. Young growing animals benefit from alfalfa's complete amino acid profile supporting muscle development. Breeding cattle maintain excellent body condition and reproductive performance on quality alfalfa. Finishing cattle fed alfalfa combined with grain supplements achieve excellent growth rates while maintaining carcass quality. Alfalfa's contribution to diet stability prevents metabolic disorders common in high-grain rations.
Horse Nutrition
Horses require high-quality forage as the diet foundation, and alfalfa provides excellent nutritional support. Adult horses maintain excellent condition on quality alfalfa combined with grain supplements appropriate for work level. Young growing horses and pregnant mares benefit particularly from alfalfa's high protein and mineral content supporting skeletal development and reproductive health. Alfalfa should be soft-stemmed variety without excessive dust to protect respiratory health.
Small Ruminant Feeding
Goats and sheep perform excellently on quality alfalfa hay. The nutrient-dense forage supports milk production in dairy operations while meeting maintenance requirements efficiently. Lambs and young animals grow rapidly on alfalfa-based diets. Mineral balance in alfalfa is particularly beneficial for small ruminants prone to mineral deficiencies.
Maintaining Alfalfa Quality During Storage
Proper storage is essential to preserve the nutritional value of alfalfa hay. Nutritional losses occur through multiple mechanisms during storage that can significantly reduce the feed value delivered to livestock.
Key Storage Principles
- Moisture Content: Store alfalfa at 15-18% moisture to prevent mold while minimizing nutrient loss. Excessively dry hay (under 10%) becomes brittle and loses leaves. Excessive moisture (over 20%) promotes microbial growth and nutrient degradation.
- Weather Protection: Cover stored hay to prevent rain damage, which leaches soluble nutrients and increases mold risk. Even light exposure reduces vitamin content, particularly carotenoids.
- Storage Duration: Alfalfa quality declines gradually during storage. Hay stored 6-12 months typically retains 95-98% of initial nutritional value, while hay stored 2+ years shows 10-15% nutrient loss.
- Temperature Control: Cool storage areas preserve vitamin content better than warm locations. Excessive heat accelerates carotenoid degradation.
- Pest Prevention: Rodent and insect damage reduces forage value while contaminating hay. Proper ventilation and storage container management prevents pest colonization.
Vitamin Preservation
Vitamins, particularly carotenoids (vitamin A precursors) and vitamin E, degrade during storage. Sun exposure during curing and storage causes rapid carotenoid loss. Quality alfalfa retains approximately 80% of initial carotenoid content after 6 months of indoor storage, but only 30-40% after extended outdoor storage. For animals requiring maximum vitamin intake, freshly-cut or recently-harvested alfalfa provides superior nutritional value compared to long-stored material.
Conclusion: Alfalfa as Premium Livestock Nutrition
Alfalfa stands unmatched as a comprehensive forage source providing superior protein content, complete micronutrient profiles, and excellent digestibility for diverse livestock species. The nutritional analysis presented throughout this resource demonstrates why alfalfa remains the preferred choice for operations prioritizing animal health, productivity, and economic efficiency.
Quality alfalfa from Kohenoor International's premium seed varieties ensures consistent nutritional value, enabling confident ration formulation and predictable livestock performance. Whether managing a small grazing operation or intensive dairy facility, alfalfa's versatility and nutritional completeness support optimal animal nutrition while maintaining sustainable forage-based feeding systems.
For detailed information about Kohenoor International's premium alfalfa varieties, including our high-protein KN92 and TAIZTAR selections, contact our team directly. Our agricultural specialists can assist with variety selection, growing recommendations, and nutritional management strategies tailored to your specific operation.
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