Ask any feeder what he paid for his mixer and he’ll know to the dollar. Ask his TMR mixer cost per ton of feed actually delivered to the bunk? Blank stare. The mixer is the busiest machine on most livestock operations, and its costs hide everywhere: fuel, labor, repairs, loader time.
With fuel and rent getting a hard look heading into winter, it’s worth an hour with a calculator. Feed is your biggest cost. The machine handling it every day deserves the same scrutiny as the land rent.
Why TMR Mixer Cost Per Ton Is the Number That Matters
A repair bill on its own doesn’t tell you much. Neither does a fuel ticket. Divide them by the tons you actually mixed and now you’ve got a number you can use. You can compare it year to year, against custom feeding, or between two machines. And here’s the kicker: two identical mixers on two different farms can come out with very different costs per ton. Habits matter.
Add Up the Cost Side
Grab a year of figures and sort them into five buckets:
- Ownership: depreciation (what you paid minus what you’ll get on trade, spread over the years you own it), interest, insurance and shed space.
- Power: fuel for the tractor or truck running the mixer, plus a fair share of that tractor’s own ownership and repair costs.
- Labor: hours loading, mixing, delivering and cleaning up, at a real wage. Your own time counts too.
- Repairs and wear parts: knives, flighting, bearings, chains, scale repairs, and the downtime that came with each one.
- Loader time: the skid steer or loader filling the mixer burns fuel and hours too. People forget this one.
Use your own records wherever you can. University extension machinery cost guides give decent defaults where you’re missing data, but your numbers beat theirs every time.
Count the Tons Honestly
Divide total annual cost by tons mixed and delivered. Your scale indicator or feed software should have that figure. If not, batches per day times average batch weight times days fed gets you close. Use as-fed tons for comparing operations, and run it on a dry matter basis if you’re comparing rations.
The Cost Nobody Sees: Shrink and Refusals
Running the mixer is only part of the story. Feed lost to shrink, spoiled in the bunk, or sorted and refused costs you the full price of the ingredients. That’s usually a lot more per ton than the mixing ever cost. Shrink tends to show up as:
- Wind and handling loss off commodity piles and loading areas.
- Spoilage on a silage face that’s moving too slow or looks like a bomb went off.
- Overloading that spills on the drive or in the alley.
- Refusals from a poor mix, where cattle pick out the expensive concentrate and leave the fiber.
Track what you bought and harvested against what the scale says went in the mixer. The gap is your shrink. A few points of shrink on a big feed bill can easily outweigh the whole annual cost of running the mixer.
What Does a Better Mix Pay Back?
Cheaper mixing isn’t automatically a win. Cut mix time to save fuel and you might get an uneven ration cattle sort, and now you’re losing intake, gain or milk components. So look at the other side of the ledger too:
- How steady dry matter intake is day to day.
- Average daily gain or feed conversion on cattle on feed.
- Milk yield and components on dairies.
- Health problems tied to an inconsistent ration, like acidosis or off-feed days.
Even a small bump in feed efficiency pays for a lot of mixer hours.
Where the Savings Usually Hide
- Batch size: running close to the mixer’s practical capacity spreads your fixed time over more tons. Overfilling slows the mix and spills feed.
- Load order and timing: same sequence every time, and a set mix time after the last ingredient. That cuts wasted minutes.
- Maintenance: sharp knives and sound augers process feed faster on less fuel.
- Loader efficiency: organized commodity bays and the right bucket size cut loading time, which is often the longest part of the whole cycle.
- Recipe discipline: use the recipe and load tracking on your scale. Fewer loading mistakes.
Stack It Up Against the Alternatives
Once you trust your cost per ton, the big decisions get easier. Is a bigger mixer or a self-propelled unit worth it? Does custom feeding make sense for a small herd? Would a second round of batches make the machine more efficient? Run every scenario through the same spreadsheet and let the numbers argue it out.
Build Quality and the Scale Both Show Up Here
Two things about the mixer itself have a big effect on cost per ton over the long haul: how fast it wears, and how accurately it weighs. Wear parts and downtime are your repair line. Scale accuracy decides whether every pound goes where the recipe says, and loading errors quietly pump up shrink. Heavier floors and walls, stainless liners and a good load-cell system don’t look like savings on the purchase invoice. They show up later, in the repair records and the feed accounting. That’s the thinking behind our LEO HD Series heavy-duty mixers, which come with stainless liners and a 4-point scale as standard. Whatever you run, compare machines on five to ten years of cost per ton, not the sticker price.
A Simple Sheet You Can Copy
One row per cost line. Three columns: annual cost, tons mixed, cost per ton. Fill in last year’s real numbers. Then add a second scenario for whatever change you’re thinking about, like bigger batches, a different loader or a new mixer. If it lowers total cost per ton, shrink and performance included, it’s worth a closer look. If it just moves cost from one line to another? Probably not.
Don’t Forget Downtime
When a mixer goes down in the middle of winter feeding, the bill isn’t just the part and the mechanic. It’s the emergency rental, the overtime, the cattle that went short and the feed that spoiled while you waited. Put an honest downtime number on the repair line. It usually makes a pretty strong case for preventive maintenance and keeping the critical spares on the shelf.
Run the Numbers, Then Fix the Easy Stuff
A mixer that’s bleeding money per ton won’t tell you. You have to add it up yourself: ownership, power, labor, repairs and loader time, divided by the tons you actually fed. Put shrink next to it. Most guys are surprised by the number. Good news is the fixes are usually simple ones like load order, knife condition and not overfilling the tub. Want to compare what you run now against a different size? Your dealer can go through it with you.
Related reading: Midwest herd rebuild math starts with daily TMR tonnage · What loading TMR with a bucket costs · What all 20 recipe slots on a TMR scale are for
