Distillers Grains for Cattle: How Much, Wet vs Dry, Storage

By the XES Netting team — bale net-wrap manufacturer · Updated October 12, 2026 · ~23 min read

Distillers grains for cattle are what is left of the corn after an ethanol plant turns the starch into fuel: the protein, fat and fiber, concentrated. For a beef herd wintering on hay or cornstalks, that makes them one of the most useful supplements available. Dried distillers carry more than three times the protein of corn, and in forage-based diets University of Nebraska–Lincoln Extension credits them with more energy than corn itself.

They also come with catches the feed tag will not mention: wet loads spoil within days, dried loads can set up in a bin, and a high-sulfur batch can hurt cattle. In the last week of September 2026, USDA reported plant prices of $172.50 to $220 a ton for dried distillers and $55 to $69.33 a ton for wet.

This guide is for cow-calf and backgrounding producers who winter cattle on hay, cornstalks or stalk bales and are pricing distillers as the supplement, or as a partial replacement when hay runs short. Tubs, cubes and liquid supplements are compared in our guide to protein tubs vs range cubes, and growing-calf rations in our backgrounding guide. It is not a ration for your herd: test your hay and the distillers, and balance the diet with a nutritionist.

XES makes bale net wrap, and most herds that feed distillers feed them beside round bales, so we cover both. We read 117 archived AgTalk discussions that mention distillers grains (1,698 posts, February 2019 to May 2026) and checked them against Extension research from Nebraska, Minnesota and Florida and USDA’s weekly co-products report.

What distillers grains are: dried, modified, wet and syrup

A dry-mill ethanol plant ferments the starch in corn (or grain sorghum) into ethanol. What remains is the bran, oil and protein, sold wet or dried and usually blended with the condensed solubles, according to the University of Florida’s Distiller Grains for Beef Cattle Feeding (AN225). Because most of the energy now comes from digestible fiber and fat instead of starch, Florida calls distillers “an excellent complement or supplement to forage-based feeding programs.” The same product reaches the farm in four forms:

On a dry basis, distillers are a protein-and-fat feed with corn-like energy and a mineral profile that needs managing. Florida’s table summarizes thousands of commercial samples:

The lab TDN in that table undersells distillers in a cow diet. Nebraska Extension’s Management Considerations for Beef Cows in Confinement (G2237) explains that lab TDN is calculated from fiber and misses the oil and the way byproducts interact with crop residue. It uses values from feeding trials instead: 108% TDN for wet, modified and dried distillers and for condensed solubles in forage-based diets, against 83% for corn, 57% for meadow hay and 43% for wheat straw or cornstalks.

Protein needs the same care. University of Minnesota Extension’s Feeding distillers grains to beef cattle notes that distillers are high in phosphorus and in rumen-undegradable (bypass) protein, so a ration built on them still needs “enough degradable protein for good forage use.” On very low-protein forage, that is a question for your hay test and your nutritionist, not a reason to skip distillers.

How much distillers grain to feed cattle

On low-quality forage, distillers are fed as a supplement measured in pounds a day. Nebraska Extension’s Keys for Cornstalk Grazing (Aaron Berger, October 2025) gives the clearest published rates, and producers on AgTalk report similar amounts on hay and stalk bales:

Nebraska’s rates assume the cattle are actually grazing residue; deep snow or ice that keeps them from it changes the plan. Cows nursing a calf need the most, which is why the fall-calver rate is the highest on Nebraska’s list. The northwest Iowa producer behind one of the rows gave a rule of thumb in May 2025:

"You can usually feed up to 10lbs to a cow. I usually feed 2lb to 8lb depending on ration. I always test it when feeding to bred cows."

— Massey1155, NW Iowa · AgTalk thread 1200888

Producers often quote wet or modified distillers by the pound as fed, so convert before comparing. Ten pounds of modified distillers at 50% dry matter is 5 lb of dry matter, the same as about 5.6 lb of dried distillers — close to Nebraska’s rate for fall calvers. Ten pounds of wet distillers at 30% to 35% dry matter is only 3 to 3.5 lb of dry matter.

How the distillers reach the cow matters as much as the amount. A Nebraska Sandhills producer feeding 300 cows 10 lb of wet distillers on the ground figured in October 2023 that a quarter of the herd was not getting its share. The common fix is to mix the wet feed with a bulky carrier such as ground hay, stalks or silage, so every cow eats some of each bite. In the same thread, a Missouri producer described mixing half wet distillers and half cornstalks by weight on frozen ground to keep cattle from tromping the feed in, and an eastern North Dakota producer offered a mixer ratio for handling:

"I have no idea if it meets your nutritional goals but 1:1 WDG to dry bulky ingredients (by volume, not weight) works well from a handling standpoint and getting a good mix as a minimum. Maybe 1:1.5 on ground stalks depending on how coarse the stalks are and how wet your WDG's are."

— NDCat99, E ND · AgTalk thread 1134325

If you mix in a vertical or reel mixer, our guide to TMR mixers for beef cattle covers sizing and cost, and our guide to grinding bales with the net wrap on covers what happens to the wrap.

Distillers with hay and cornstalks: supplement or substitute

Start with a hay test. If the hay already meets the cows’ protein and energy needs, distillers add cost without adding much; if the forage is cornstalks, straw or late-cut grass, they are often the cheapest way to fill the gap. Our guide to reading a hay test explains the numbers. A Michigan producer gave that advice in March 2025 to someone choosing between distillers and corn gluten pellets:

"I'd start with a test of your hay, it's hard to tell what you need to add by guessing. Maybe you could just add some corn, if the protein levels are high enough with your hay. It would also give you an idea of the sulfur content, so you don't overload your critters."

— r82230, Thumb of Michigan · AgTalk thread 1194703

Residue gets poorer as cows clean up a field. Nebraska puts grazed cornstalks at about 70% TDN at the start of the grazing period, falling to about 45% at the end, which is why the Michigan heifer feeder in the table raised the distillers from 1 to 3 lb as the stalks got worse. If you bale stalks instead, see our guides to grazing vs baling cornstalks and baling clean cornstalk bales.

Distillers can also stretch a short hay supply. A west-central Ohio producer, 400 bales short on alfalfa in October 2023, called $5-a-ton wet distillers a cheap replacement, and some producers sell the hay outright:

"In southern mn when the hay crop is short I have fed cornstalks and distillers selling the hay."

— Hick, Sw mn · AgTalk thread 1097428

Replacing most of the hay is a different program: limit feeding. Nebraska’s G2237 defines it as meeting all of a cow’s nutrient needs with an energy-dense, protein-adequate diet fed at less than 2% of body weight on a dry matter basis, and its example diets pair distillers with straw:

Check sulfur before you feed a diet like this. At 57% of the diet, distillers testing 0.66% sulfur supply 0.38 percentage points of sulfur on their own, nearly the 0.40% ceiling before the straw, mineral and water are counted (see sulfur below), so test the distillers and the water first. Nebraska Extension’s Limit Feeding with a Bale Feeder, Bunk and a Bucket (Aaron Berger, updated April 2026) adds two safeguards: move cows onto an energy- and protein-dense limit-fed diet over a week to 10 days, and give each cow at least 30 inches of bunk space.

Done that way, it works. In a 2009 Nebraska Beef Cattle Report trial, 70 cows limit-fed a diet the report summarizes as 41% wet distillers (or distillers solubles) and 59% cornstalks performed similarly to cows eating all the brome hay, cornstalks and alfalfa haylage they wanted, and the wet-distillers cows were heavier. G2237 adds that a diet of 80% ground cornstalks and 20% wet distillers will see some sorting, that wet distillers usually sort less than dry, that limestone should be added whenever distillers are in the ration, and that ingredients should be measured accurately and delivered at about the same time every day.

Round bales still carry most of these rations. A Missouri producer feeding weaned calves, bred heifers and cows from a vertical mixer described each load in January 2023:

"Im tossing in 1, 1300 lb bale of rained on fescue hay that looks good but they won't eat much if i unroll it. 1300# skid steer bucket of wet ddg. And filling up to 6000 lbs with silage."

"Im only mixing one load a day, and ive had best of luck feeding, then mixing tomorrows batch and letting the hay soak up the silage juce overnight. It has cut my hay use tremendously."

— Jon, Callao Missouri · AgTalk thread 1095375

Sorting and thin rations are the ways it goes wrong. A northeast Colorado feeder found in May 2026 that cattle would separate a wet mix, and a Nebraska producer who drylots pairs warned in February 2024 against stalks and wet distillers alone:

"Last time we tried it, it was in a TMR with wet distillers and millet hay. They licked the wet distillers off the stalks and ate the millet hay. We were shoveling bunks 3x a week."

— A&M, Ne Colorado · AgTalk thread 1238694

"Problem I see with just cornstalks and wdg. Calves don't grow."

— ahay68979, Saronville NE · AgTalk thread 1149445

For a small or new herd, the simplest system may be stalk bales in a ring and a bucket of distillers, as a west-central Iowa producer told a beginner in December 2023:

"I would trade the feed bunks for a bale ring if you’re just starting and you can dump distillers from buckets on the ground every day. The cows will learn to eat stalk bales from a bale ring if that’s what they’ve got to eat."

— nkline, West Central Iowa · AgTalk thread 1140574

Whichever system you use, the forage half of the ration is usually round bales, and every bale that rots in storage or gets trampled at the feeder has to be replaced with something you buy. Our guides to stretching a short hay supply, reducing round-bale feeding waste, round-bale feeder types and how much hay a cow eats cover that side.

Wet vs dried: what distillers grains are worth

Price distillers by what the cattle use, not by the ton. Nebraska’s G2237 worksheet divides the as-fed price by the dry matter and then by the TDN: wet distillers at $100 a ton, 35% dry matter and 108% TDN come to 13 cents per pound of TDN, against 15 cents for $110 wheat straw and 16 cents for $160 meadow hay in the same example. To price a load yourself:

1. Start with the delivered price. Add freight to the plant price, and add shrink for wet loads; a Nebraska producer’s April 2024 cost-of-gain sheet marked wet distillers up 10% for shrink.
2. Convert to dry matter. Divide by the load’s dry matter, from a test or the plant: $60 a ton at 35% dry matter is about $171 a ton of dry matter.
3. Convert to energy. Divide by 2,000 lb and then by the TDN (1.08 for distillers in forage diets, 0.57 for meadow hay): $171 a ton of dry matter is about 7.9 cents per pound of TDN.
4. Compare like with like. Run hay, corn or cubes through the same steps, and if protein is the shortfall, compare the cost per pound of crude protein too.

Running the plant prices in USDA’s National Weekly Grain Co-Products Report of October 5, 2026, through the same arithmetic gives this:

Assumptions: wet distillers at 35% to 30% dry matter (USDA quotes them at 65% to 70% moisture) and dried at 90%; 108% TDN (Nebraska’s feeding-trial value in forage diets) and 30% crude protein on a dry basis for both. For comparison, grass hay at 88% dry matter and 57% TDN costs about 10 cents per pound of TDN at $100 a ton and 16 cents at $160. These are plant prices before freight, shrink and storage. Wet distillers carry roughly two tons of water for every ton of dry matter, so their advantage over dried narrows quickly with distance.

Some plants tie the wet price to corn. A producer on Colorado’s eastern Front Range reported in May 2025 that his plant priced wet distillers weekly at 13 times its corn price per bushel, with a waiting list of buyers. At USDA’s average ethanol-plant corn price for the week of September 28, $4.87 a bushel, that formula gives $63 a ton, inside the $55 to $69.33 range USDA reported for wet distillers.

The classic mistake is comparing wet distillers to hay by the ton of dry matter alone. In a 2019 AgTalk thread asking whether $60 round bales or $60-a-ton wet distillers were the better buy, a northeast Iowa producer did that math:

"What moisture are WDGS? 65%? If so then the WDGS is $171/ton of dry matter. If the hay is 15% moisture then it would be $118 per ton of dry matter."

— 17821x, NE Iowa · AgTalk thread 834912

On dry matter the 1,200-lb bales were cheaper, and he concluded that cows on decent hay probably need no supplement, while stalks or poor CRP hay call for the distillers’ protein. (When the actual load tested 52% moisture, he recalculated the distillers at $125 a ton of dry matter.)

Both points hold, and energy makes the second one stronger: with Nebraska’s 108% TDN for distillers and 57% for hay, $171 a ton of dry matter is 7.9 cents per pound of TDN, against about 10.3 cents for the hay, before counting the distillers’ protein. Good hay that meets the cows’ needs is the simpler buy; as the supplement to poor forage, the distillers were the cheaper energy and protein.

Timing moves the price as much as location. Nebraska Extension’s Storing Wet Distillers Grains in the Summer for Fall and Winter Feeding (August 2023) explains that feedlot demand for wet distillers drops in summer, when yards have cut inventory and yearlings are on grass, and climbs in fall, just as cow-calf producers start supplementing and smaller buyers “feel the pinch of tight supplies.” Plant problems swing prices too. In May 2026 a Nebraska producer described the winter just past, when a nearby plant’s dryer was down:

"This winter for almost 2 months my avg cost was $16 a ton delivered. Was $5-10 at plant. Then spiked for a load at $65. Now in $40s Feed less alfalfa and corn with it. Which are 2 most expensive ingredients. So yes i feel it pays."

— ahay68979, Saronville NE · AgTalk thread 1237305

A west-central Ohio producer reported in January 2024 that wet cake had ranged from minus $5 to $28 a ton over the previous six months; a couple of times the plant paid buyers to haul it. A Galena, Illinois, producer said in September 2023 that in the first year of his 1,300-ton concrete pit, about 15 years earlier, he filled it three-quarters full with wet cake delivered at $13 a ton, and by spring wet cake was $73.

Distance and volume limit who can buy wet. Minnesota Extension notes that plants may require buyers to take wet distillers by the semi load, so smaller operations may need to group together. Florida Extension, writing for the hot, humid Southeast, considers wet distillers feasible only for large operations near a plant. Far from the Corn Belt even dried distillers can price out: an eastern Washington rancher put his haul at 600 to 800 miles in January 2023.

Dried distillers are usually priced against soybean meal, a northwest Iowa producer noted in May 2025. At the October 2026 prices, Iowa dried distillers cost about 33 cents per pound of crude protein, against about 38 cents for Iowa soybean meal if it is the common 48% grade, and the distillers bring energy as well. Minnesota Extension prefers true protein sources such as soybean meal or canola over urea when a distillers diet needs more degradable protein.

For cubes and tubs, including distillers-based range cubes, see our comparison of protein tubs vs range cubes; if you feed other people’s cattle, our guide to custom cattle feeding rates shows how feeders bill distillers.

Storing wet distillers: pads, piles, bunkers and bags

Storage decides whether cheap wet distillers stay cheap. Minnesota Extension says wet distillers usually keep fewer than 5 days and that ensiling preserves them, but warns that bag or silo costs can offset the savings.

Nebraska’s 2023 BeefWatch article lays out the options for a 65%-moisture product. Bagging wet distillers alone works only with care, because bagger pressure can split the bag; adding roughage gives the mix enough structure to bag; and a bunker, whether concrete or built from big bales and lined with plastic or about 4 inches of ground hay or residue, can be filled with or without roughage. Cover the pile and feed from the smallest face you can. Some mold is likely on exposed feed; Nebraska says analysis of those molds “has not revealed any mycotoxins,” and the feed appears safe for cattle when blended with other feeds.

How much dry feed to add comes from 2008 Nebraska research: six experiments measured the minimum needed to bag wet distillers at a constant 300 psi, and the report gives recommended levels for bunkers.

Nebraska’s 2023 article adds that bunker roughage is optional: 30% to 40% ground roughage makes the pile easier to pack if you want to squeeze out air as with silage, but mixing takes time, labor and equipment. Minnesota Extension’s alternatives are a bag or silo mix of 70% wet distillers and 30% soybean hulls, a firmly packed wedge inside walls of large bales, or two 50-lb bags of livestock salt spread over the wedge the semi leaves behind. Producers in the threads use the same tools. A Nebraska feeder bagging in November 2022 described his mix:

"We’re putting 700# dry ground hay to 6000# wet distillers and mixing in wagon before bagging. I can make a baseball out of the mixture and it holds together well."

— brutejman, Nebraska · AgTalk thread 1085856

At 30% to 35% dry matter for the distillers and 88% for the hay, that mix is roughly a quarter hay on a dry basis, well above the 15% minimum Nebraska found for grass hay in a bag. Another producer in the same thread grinds stalks through a 2-inch screen, mixes them with wet cake to about 50% dry matter, and piles the mix for a couple of days to “stew” before he bags it.

Piles on a pad are cheaper. A Nebraska producer put shrink on dirt at 20% or more in September 2023, and an Illinois producer in the same thread gave the shape:

"I’d make it 40 ft long by 16 ft wide. Being long and skinny, you have less surface area to spoil. You can also pile it up more."

— roo, Cullom, Illinois · AgTalk thread 1130551

The Galena producer lets each load sit a couple of days to firm up, then pushes it higher with the loader so less of it is exposed to air (May 2026), and he reports a 2-inch spoiled crust on his pit (September 2023). The Cullom producer covers piles with salt “enough that it looks like snow flurries” (January 2026), and a central South Dakota rancher tarps a summer stockpile bought at half the winter price and accepts some spoilage (January 2026).

A northeast Missouri producer reported in August 2022 that uncovered stockpiles of bargain wet cake had kept six months or more: the outer crust hardened and could change color, but the feed inside was good, and his cattle ate all of it without harm. That is one producer’s experience, not a storage standard. Feed that has heated badly, smells off or is heavily molded is a different matter; if you are unsure about a pile, have it tested before you feed it.

Hauling wet feed has its own problems. A northeast Colorado producer found in November 2025 that wet cake leaks out the back of an end dump and suggested a belt trailer that seals, and a southeast North Dakota producer with live-bottom trailers reported wet feed freezing to the poly liner on cold days.

Dried distillers in bins: why loads set up

Dried distillers ship and store like grain, with one difference that drew more posts than any other handling problem in the threads we read: they can bridge and set up in a bin. A south-central Minnesota producer explained the pattern in July 2024:

"My experience with putting DDG's in a bulk bin are that if they are cool or cold going in (fall,winter, and spring), they'll flow pretty good. If they're warm (summer) and you don't start pulling regularily right away they'll setup. If they're warm and you let them sit awhile before using, they won't flow at all."

— DougK, SC MN · AgTalk thread 1167232

Producers who make bins work describe steep hopper cones (60 to 67 degrees at minimum, a North Dakota poster said in July 2024), agitators or a rubber mallet, cool loads emptied in a few weeks, and blending in grain (a southeast Nebraska producer recalled in April 2024 that about 15 years earlier he mixed 15% corn into loads that came straight from the plant, adding that things change). Others give up on bins and dump on a flat pad, loading with a bucket. Plan on less capacity than for corn: a northwest Iowa producer found in April 2024 that an 18-ton bin held only 12 tons of distillers.

Sulfur, phosphorus and variable loads

Sulfur. Minnesota Extension says growing cattle need 0.15% sulfur in the diet’s dry matter and that the whole diet should not exceed 0.40%, counting every feed, any sulfate-based mineral and the water. Water with less than 1,500 parts per million of sulfate is less of a concern, but Minnesota notes western water has ranged from 3,000 to 10,000 ppm. Too much sulfur can reduce copper uptake or cause polioencephalomalacia, which Florida’s AN225 describes as a neurological condition that can be fatal if untreated.

Distillers vary: Florida’s summary averages 0.66% sulfur (0.44% to 0.87%), and Minnesota’s regional samples averaged 0.47% (0.12% to 0.82%). As the limit-feeding example above shows, the ration share matters: distillers at 0.66% sulfur add 0.13 percentage points of sulfur at 20% of the diet’s dry matter and 0.38 at 57%. A west-central Iowa producer described the risk in November 2022:

"It is not “hot” feed which usually refers to high starch feed. You can get a batch with high sulfur content, and if you are feeding large amounts with starch and the rumen pH gets low it can cause brain injury."

— nkline, West Central Iowa · AgTalk thread 1086089

Syrup deserves the same caution. A Missouri producer who blends large volumes of it explained his limit in December 2025:

"My nutritionist advised us to not exceed 15% unless we test each load. Thats not going to happen, so 10% feels safer. I have never had a problem with that. I would test a few loads and also test your water before going higher."

— olivetroad, Fulton, Mo · AgTalk thread 1224227

Phosphorus and calcium. Distillers average about 0.90% phosphorus and only 0.09% calcium. Minnesota Extension says not to let the diet’s calcium-to-phosphorus ratio fall below 2:1, and Florida warns that extra phosphorus on a high-forage diet can upset the ratio and raise the risk of urinary calculi; a calcium source free of or low in phosphorus, such as ground limestone, can bring the ratio back. Our guide to winter mineral for cattle covers what distillers do to the mineral program, including copper.

Fat and quality. Florida notes that high fat at high inclusion can interfere with fiber digestion, and that distillers should be yellow to tan: dark color with a “burned” smell indicates scorching, which can lower feed value, especially protein digestibility. Because composition depends on the plant and the process, Minnesota recommends sampling before buying and again whenever the source or quality changes. An eastern North Dakota producer summed up in April 2024 why advice on distillers varies so much:

"The variety of answers and levels of success doing this speaks more to the variable nature of DDG's, where it comes from, moisture level, fat content and your environmental conditions than anything."

— NDCat99, E ND · AgTalk thread 1157736

Frequently asked questions

Is distillers grain good for cattle?

Yes, as a supplement to forage. Dried distillers average about 31% crude protein and 12% fat on a dry basis, and Nebraska Extension credits wet, modified and dried distillers with 108% TDN in forage-based diets. They are high in phosphorus and can be high in sulfur, so test each source, add limestone and keep the whole diet under 0.40% sulfur.

How much distillers grain should I feed a cow?

On cornstalks, Nebraska Extension suggests no protein supplement for mature, dry spring calvers in good condition grazed at recommended stocking rates, 3.5 lb of dried distillers a day for first-calf heifers within 90 days of calving, 5 lb for fall-calving cows, and 2 lb for weaned calves targeting 1 lb of daily gain. Deep snow or ice changes the plan.

Is wet or dried distillers grain the better buy?

Compare the cost per pound of energy delivered to your yard. At USDA plant prices for September 28 to October 2, 2026, wet distillers cost about 7 to 11 cents per pound of TDN and dried about 9 to 11 cents, assuming 108% TDN. Wet usually wins at the plant, but the water adds freight and loads spoil within days.

How long does wet distillers grain last?

Minnesota Extension says untreated wet distillers usually keep fewer than 5 days. Nebraska research found bags need at least 15% ground grass hay or 12.5% wheat straw on a dry basis; bunkers work with or without roughage, though 30% to 40% makes packing easier. Producers who pile and cover wet loads report keeping them for months under a spoiled crust.

Can distillers grain replace hay for cows?

Partly, through limit feeding. Nebraska Extension’s examples pair distillers with straw at 57:43 or 30:70 on a dry basis, fed at less than 2% of body weight. Transition over 7 to 10 days, allow at least 30 inches of bunk per cow, add limestone and check sulfur: at 57%, distillers alone can nearly reach the 0.40% limit.

The bottom line on distillers grains for cattle

Distillers grains for cattle are the protein and energy that turn cornstalks, straw and poor hay into a working winter ration. Feed them by the pound to the cattle that need them most (first-calf heifers, fall calvers and weaned calves), price them per pound of energy delivered to your yard rather than per ton at the plant, and store wet loads so the last of a semi is still good when the cows reach it. Test the hay first: good hay may not need them at all.

Under almost every one of these rations is a round bale, so protect it: XES bale net wrap keeps bales tight from the field to the feeder, which means less of the forage you are paying to supplement ends up as waste. For the other supplement options, see our guide to protein tubs vs range cubes, and for the forage side, our hay intake guide.

Research note: We read 117 archived AgTalk discussions that mention distillers grains (1,698 posts, February 2019 to May 2026; 47 with distillers in the title), then checked the Extension publications linked above from Nebraska, Minnesota and Florida and USDA’s National Weekly Grain Co-Products Report of October 5, 2026, in October 2026. Post counts include questions and replies, not counts of farms, and producer figures are what they reported at the time and, where stated, the place given. Figures marked as XES calculations use the assumptions stated with them. XES sells bale net wrap and does not endorse any feed, equipment or ethanol plant; nothing here replaces a ration balanced by a nutritionist or veterinary advice.

Featured photograph: Cattle Eating Hay, Bruce Dupree, Alabama Cooperative Extension System, January 2016, central Alabama, dedicated to the public domain under CC0, via Wikimedia Commons. Commercial cows and calves eat hay spread on a winter pasture. Image unchanged apart from display resizing.