Soy Hull Pellets (Soyhulls)
Highly digestible fiber energy source — safe gut fill, stimulates feed intake, and bridges forage and grain in the ration without acidosis risk
Always read and follow product labels for feeding and sheep safety.
Overview
Soy hull pellets are the byproduct of soybean processing — the outer hull removed before crushing for oil. Despite their high fiber content (~35–40% crude fiber), soyhulls are highly digestible because the fiber is predominantly pectin and hemicellulose, not indigestible lignin. This makes them one of the safest energy ingredients in a show lamb ration: they provide meaningful calories without the rapid starch fermentation that causes rumen acidosis. In the ration, soyhulls act as a “bridge” between forage and grain — they provide gut fill and stimulate intake, which is critical during limit-feeding periods. MSU Extension recommends inclusion up to 20–25% of the total grain mix.
Nutritional Profile
| Nutrient | Value (dry matter basis) |
|---|---|
| Crude Protein | 10–12% |
| Crude Fat | 2–3% |
| Crude Fiber | 35–40% |
| TDN | 72–78% |
| NDF | 55–60% |
| Calcium | ~0.50% |
| Phosphorus | ~0.15% |
| Ca:P Ratio | ~3:1 (calcium-favorable — helpful for wether rations) |
Sheep Safety
Copper: No concern — soyhulls contain no added copper and are safe for sheep.
Urinary calculi (wethers): Favorable Ca:P ratio (approximately 3:1, calcium-dominant). Soyhulls are one of the better commodity ingredients for improving Ca:P balance in a wether ration. Including soyhulls partially offsets the high-phosphorus load from corn and barley.
Acidosis note: Despite being fiber-based, soyhull-heavy diets can drop rumen pH below 5.5 if fermentation is rapid and intake is high. Maintain access to long-stem hay and transition gradually. Do not use soyhulls as the sole fiber source without hay access.
Show Circuit Use
Primary Role in Program
Soyhulls do something the other budget commodities can’t — they provide gut fill and stimulate intake without loading the rumen with starch. This makes them especially valuable in two situations: (1) limit-fed lambs where you need to maintain fill on reduced total feed volume, and (2) “easy keeper” lambs that need to look full without gaining excess fat. The pellet form is very palatable and mixes well into rations.
Typical Feeding Rates by Phase
| Phase | Rate |
|---|---|
| Growing (50–110 lbs) | 0.25 lb/day as ration component |
| Finishing (110 lbs – show) | 0.25–0.5 lb/day |
| Final 2 weeks | 0.5 lb/day; pair with beet pulp for fill effect |
| Show week | Hold steady — do not introduce new ingredients |
How to Feed
Dry, mixed into total ration. Very palatable in pellet form. Can be lightly dampened with water to improve mixing in a textured ration, but does not require soaking (unlike beet pulp). Absorbs water readily — store in dry conditions to prevent pellet breakdown.
Phase Protocols
Growing Through Finishing | Fiber Foundation
- Rate: 0.25–0.5 lb/day
- Mix: Include as 15–25% of total grain mix alongside barley/corn and protein supplement
- Purpose: Provide digestible fiber energy, improve gut fill, buffer starch load from primary grains
Pre-Show / Show Week | Fill Maintenance
- Rate: 0.5 lb/day alongside beet pulp
- Combination: Soyhulls + beet pulp is a proven low-risk fill pairing — fiber from two distinct sources creates deeper, more consistent fill than either alone
- Purpose: Maintain visual fill during limit-fed pre-show period
Stacking & Combinations
Soyhulls + beet pulp: The most common commodity fill combination. Beet pulp expands for belly fill; soyhulls provide rib depth and fiber bulk. These two together eliminate the need for most commercial fill supplements in budget programs.
Soyhulls + rolled barley: Good safety pairing. Soyhulls dilute the starch density of a high-barley ration and significantly reduce acidosis risk while contributing energy and fill.
Soyhulls + alfalfa pellets + beet pulp: The core commodity fill and fiber stack used in budget show programs. Covers fill, fiber, calcium correction, and protein from three inexpensive ingredients.
Sourcing & Cost
Available in bulk from most grain co-ops, ethanol co-products dealers, and regional feed mills. Also available bagged (40–50 lb bags) from farm supply stores. Often one of the lowest-cost energy ingredients per unit of TDN available. Request feed-grade soy hull pellets — do not confuse with soybean meal (very different product).
Community Tips
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