Hay Preservation for Beef Cattle — How HayRite Protects Dry Matter and Feed Quality
Beef operations win or lose on the simple math of dry matter intake times feed conversion. Stored hay sits at the center of that equation — here's why HayRite matters and how to participate in our Beef ADG Study.
The beef hay problem
Beef operations buy or grow hay to fuel growth, maintain breeding stock, or finish cattle. Every pound of dry matter lost in storage is a pound that doesn't become a pound of gain. Every degree of heating that destroys protein is a notch off the ration's effective TDN.
⊙ Field Knowledge Outdoor uncovered round bale storage typically loses 25–37% of dry matter over six months. Even covered bales lose 5–15% to weathering and microbial activity. (UMN Extension; Mississippi State Extension; UGA.)
✓ Confirmed Heat damage in baled hay produces ADIP — protein bound by Maillard reaction that's largely indigestible. For finishing operations especially, ADIP is invisible nutritional dead weight in the ration.
The Economics of Dry Matter Loss
It is easy to overlook shrinkage in the stack, but the math directly impacts your cost per tonne. Consider a standard calculation: At a 15% DM loss on a 500-tonne crop valued at $180/tonne, you are losing $13,500 of feed value to the environment. By treating the hay and reducing that loss to just 5%, you recover $9,000 of usable feed. Every tonne of dry matter saved during storage is a tonne you don't have to source and purchase in the middle of winter.
What HayRite does for beef
1. Preserves dry matter
◐ Trial Data Lower bale temperatures (~30% cooler internal temps in first 14 days) and dramatically reduced mould (33% → 0% stem; 70% → 2% leaf) translate to more recoverable dry matter at feed-out. In Darts Biotechnologies' 2023 field data, HayRite-treated bales retained an average of 12% more total dry matter over a six-month storage window compared to untreated controls.
2. Preserves protein
Less heating during the critical first two weeks means less protein binding via Maillard reaction. More of what you grew or bought stays digestible.
3. Better feed efficiency (theoretically)
⚠ Strain Caveat The H57 sister strain has been studied in beef cattle (Ngo et al. 2021; Pan et al. 2022) showing positive ADG and feed conversion outcomes when used as a direct-fed microbial. DB38 shares the lineage but doesn't yet have its own peer-reviewed beef cattle data.
Do beef cattle on HayRite-treated forage show measurable ADG differences?
This is what our Beef ADG Study is designed to answer. We're recruiting 6–10 operations — cow-calf, stocker, or finishing — for a 6-month study measuring weight gain on treated vs. untreated hay. Free product, scale rental, $500 stipend.
Apply to the Beef ADG Study →
How beef operations are using HayRite
Seamless Integration with Your Feeding Program
HayRite fits directly into your existing beef operation without requiring any changes to your equipment or daily workflow. The inoculant applies via standard baler-mounted sprayers—the same systems used for traditional chemical preservatives. At feed-out, you handle the bales exactly as you always have, whether processing through a tub grinder, rolling out in the pasture, or dropping into ring feeders. The physical process remains identical; the difference is simply higher-quality, dust-free hay hitting the bunk.
Cow-calf operations
Stored winter forage is the cost driver for cow-calf. Reducing storage losses by even 5% across a season changes the year's economics meaningfully. Application at baling adds operational steps but pays back in recovered tonnage.
Stocker / backgrounding
Stocker operations live on consistent ADG. Variable hay quality — some bales heated, some moldy, some good — produces variable gain. Treated hay narrows that variance.
Finishing
For finishing operations where hay is a smaller component of the ration, the question is more about quality consistency for the breeding herd or replacement heifers than the finishing pens themselves.
Want to see the math work on your own farm?
We are actively partnering with beef producers to measure these outcomes in the real world. If you want to run a trial to see the exact dry matter retention and ADG differences on your operation, Apply to our Field Research Program →
Lower-friction options
Run the calculator with your tonnage, request a quote sized to your operation, or read the full product overview.