Barley is a feed grain for poultry with roughly 10-12% crude protein and energy density a step below corn — and one defining nutritional characteristic: beta-glucans, the non-starch polysaccharides that increase digesta viscosity and can depress performance if barley inclusion rises without an enzyme program. In regions where barley is priced competitively against corn it substitutes for part of the grain base, with the same rule that governs wheat inclusion: the enzyme program is part of the economics, not an add-on. This page covers what barley contributes, the beta-glucan variable that decides inclusion, and the price conditions that make barley worth formulating around.
What Barley Contributes
| Contribution | Typical Range | Role In The Ration |
|---|---|---|
| Crude protein | ~10-12% | Comparable to wheat, higher than corn — barley can trim the soybean meal requirement slightly when it replaces corn |
| Metabolizable energy | Below corn's level, variety-dependent | A step down from corn — the energy gap is the first thing the price comparison has to clear |
| Beta-glucans (the defining variable) | Varies by variety and growing conditions | NSPs that raise gut viscosity and depress nutrient digestion — the reason barley inclusion pairs with a beta-glucanase enzyme program in poultry rations |
| Fiber | Higher than corn, hull-dependent | Hulled varieties carry more fiber — hullless varieties close the energy gap but are rarer in feed markets |
The Beta-Glucan Variable
- Enzyme program first, inclusion second. Poultry cannot break down barley's beta-glucans; without beta-glucanase, viscosity rises with inclusion and performance falls. With the right enzyme, substantially more barley can be used — the enzyme cost belongs in the barley economics.
- Variety and season move beta-glucan levels. The same inclusion rate performs differently across barley lots — hulless varieties typically carry less, and growing conditions shift the rest. Formulation follows supplier analysis.
- Mycotoxin risk is real in wet years. Barley is susceptible toDON and other mycotoxins in poor harvest conditions — the feed storage guide covers the receiving checks.
When Barley Is Worth Formulating Around
Barley earns inclusion when its delivered price clears the energy gap against corn after the enzyme program is accounted for — the comparison is cost per unit of usable energy plus the protein contribution, not price per ton. In barley-growing regions this ratio works in barley's favor in some years and against it in others; the feed budget guide works the math, and the wheat guide covers the parallel case of the other NSP-carrying grain. The corn guide covers the baseline every substitution is measured against, and the soybean meal guide covers the protein half. The decision belongs with your nutritionist against current prices.
Tracking Barley In Poultry Log™
Feed deliveries logged by weight and phase let substitution economics be tracked per flock: barley-heavy periods against corn-heavy periods, each measured on the same cost-per-pound output. The feed consumption chart gives the intake curve; the break-even price shows what grain movement does to the floor; and the profitability dashboard carries the trend across flocks.
- 2026-10-06: Comprehensive rewrite — composition table, beta-glucanase enzyme-program framing, and energy-adjusted price comparison — replacing the earlier boilerplate version.
- Earlier version: short first-person note on barley as an energy source.