Corn Silage for Beef Cows: Rations, Cost vs Hay, When It Pays

By the XES Netting team — bale net-wrap manufacturer · Updated October 11, 2026 · ~18 min read

Corn silage for beef cows can cut a winter feed bill or quietly raise it, depending on how many cows eat it, who chops it and whether anyone counts the tractor that has to start every day. It carries more energy than most hay: the University of Kentucky’s feed tables put it at about 71% total digestible nutrients (TDN), while the hay in a Nebraska Extension cost example tested 52%. Whether that makes it cheaper comes down to cost per pound of energy, which we work out below. It is also low in protein, it has to be limit-fed or dry cows get fat, and the silage face has to keep moving. In December 2025 a 50-post AgTalk thread asked the question every small herd asks: how many cows justify corn silage?

This guide is for beef cow-calf producers deciding whether to add corn silage to winter rations, buy standing corn or a neighbor’s silage, or stay with round-bale hay. Growing calves are covered in our backgrounding guide, and storage choices (bag, bunker, pile or baleage) in our silage storage guide. It is not a ration for your herd: balance yours with a forage test and a nutritionist. XES makes bale net wrap, and most beef herds that feed silage still feed round bales beside it, so we compare the two honestly. We read 36 archived AgTalk discussions about corn silage for beef cattle (499 posts, January 2021 to February 2026) and checked them against Extension guidance from Kentucky, North Dakota State, Ohio State, Nebraska and South Dakota State.

Is corn silage good for beef cows?

Yes, as an energy feed. Corn silage is the whole plant chopped at about 65% moisture (35% dry matter) and fermented, and 40% to 55% of it is grain, according to the University of Kentucky’s Feeding Corn Silage to Beef Cattle (ID-264, 2020). Its weakness is protein, and its risk is that cows will eat far more energy than a dry cow needs.

Three things follow from that table. First, the energy is high enough that a dry, pregnant cow on full-fed silage will gain condition she does not need, so silage is fed in measured amounts. Second, at about 8% crude protein, silage alone does not meet the needs of a nursing cow or a growing heifer; Kentucky calls skipping the protein supplement “a common mistake” of new silage feeders. Third, the calcium-to-phosphorus ratio is close to 1:1, so the mineral program matters; our guide to winter mineral for cattle covers it. A Wisconsin producer feeding 26 cows from a shared bag gave the short version on AgTalk in December 2025:

"26 Cows and the Bull. I feed corn silage. Split an 8ft bag with the neighbor free choice hay and feed corn silage every few days to limit to 10 lbs a day DM. Corn silage is by far the cheapest home grown feed you can produce."

— Moose333, NW Wisconsin · AgTalk thread 1222076

Corn silage vs hay: cost per pound of energy

The fair way to compare feeds with different moisture and energy is cost per pound of TDN. Nebraska Extension’s Erin Laborie used it in Limit Feeding Cows Corn as an Alternative to Hay (updated August 2026): hay at $150 a ton and 52% TDN cost nearly 16 cents per pound of TDN, against about 10 cents for corn grain. The table runs the same arithmetic for silage and hay at a range of prices.

Note: hay has its own storage and feeding losses, which depend on how the bales are stored and fed; silage loses dry matter in the pile and at the face. Use your own forage tests and loss estimates. The point of the table is that silage is not automatically cheap: $50 silage only matches $100 hay before shrink, and it beats hay clearly only when hay is expensive or the silage is cheap to grow and harvest. A west-central Iowa producer shared the rule of thumb many use in the December 2025 thread:

"My rule of thumb had always been that corn silage (per ton) is about 10 times the price of corn. Some would argue that number should be 12.....or pick your own. $4.00/bu x 10= $40/ton at 65% moisture."

— RCD, West Central Iowa · AgTalk thread 1222076

He went on to double that figure to compare it with hay. On a strict dry-matter basis, $40 silage at 35% dry matter is the same price per pound of dry matter as hay at about $97 a ton at 85% dry matter, and silage carries more energy per pound. Where silage pulls ahead is feed per acre. An eastern South Dakota feeder put it this way:

"5 tons of hay at 15% moisture is #8500 of dry matter at about 60%tdn. 25 tons of silage at 65% moisture is #17500 dry matter at 70% tdn. So i can produce over twice the feed on an acre of silage than an acre of hay. On the feeding end i think the reduced waste propably covers the cost of my tmr mixer vs bale rings."

— Midwestfeeder, Eastern SD · AgTalk thread 1222150

Producers who have run the numbers report real savings. A north Missouri fall-calving herd put its cost at “$5/day currently. Silage based I’m down around $2.50” in February 2024, and a 26-cow herd making silage for the first time put its savings at about 50 cents a cow a day in December 2025. A central Minnesota producer estimated he now uses about 40% of the hay he fed in an all-hay system.

What a ton of corn silage is worth

If you are buying standing corn or silage from a neighbor or dairy, price it from the feeds it replaces. North Dakota State University’s What is the Value of a Standing Corn Crop for Silage? (EC1343, revised August 2026) treats a ton of 35% dry-matter silage with 50% grain as 350 lb of corn plus 350 lb of grass hay on a dry basis. With shelled corn at $4.25 a bushel and hay at $90 a ton, that makes $48.03 a ton; silage with only 25% grain is worth $41.51, and silage with no grain $35. The buyer then subtracts harvest costs (NDSU’s most frequent custom rate for chopping and hauling was $12 a ton) and expected spoilage. Our guide to custom silage chopping rates compares the 2026 state survey rates for chopping, hauling and packing.

Ohio State’s Jason Hartschuh reached a similar range in Corn Silage Pricing and Grain Yield Determination (August 2026). Ohio’s 2026 corn budget puts the cost of growing silage near $39 a ton standing for a 27-ton crop; Ohio custom rates for chopping, hauling and packing run $7 to $14.40 a ton, storage shrink $4 to $8 and feeding out 60 cents to $2. His standing-corn example values the grain at about 7 bushels a ton, adds $24 for the stover the seller loses, subtracts $10.50 of harvest cost and lands at $43.69 a ton. Forum rules of thumb run from 8 to 12 times the corn price per ton, higher when priced out of the pile than in the field. In drought years the price drops with the grain: a north-central South Dakota grower sold insured drought corn for $25 a ton, with custom chopping at about $12 a ton and 8 tons an acre. Our drought corn baleage guide covers the nitrate testing that drought silage needs.

How much corn silage to feed a beef cow

Cattle will eat corn silage at 5 to 7 lb per 100 lb of body weight as fed, Kentucky notes, which would be 65 lb or more for a 1,300-lb cow. Few dry cows need that much energy. Published and producer rations look like this:

South Dakota State Extension priced the 12-lb silage ration above at $1.98 a cow a day against $2.55 for an all-hay ration, in Incorporating Corn Into Beef Cow Rations Can Save Forage and Feed Expenses (updated March 2025), though the example used $6.30 corn, $160 grass hay and $55 silage, so rerun it at today’s prices. Remember that silage pounds are wet: 20 lb of 35% silage is only 7 lb of dry matter. A west-central Iowa herd that feeds a mixed ration described its program:

"We usually feed about 35#/head/day of ration, silage and about 12% ground brome hay. This is about as much brome as our RotoMix wagon wants. The last trimester, we add 1/2#/hd/day of a 40/20 protein pellet. If you bump the protein, that is where you can get larger calves."

— 560HighCrop, west central Iowa · AgTalk thread 1167618

Rules that apply to any limit-fed, energy-dense cow ration, from Nebraska and South Dakota State Extension guidance:

• Keep some long-stem forage in the diet, at least 0.25% to 0.5% of body weight as dry matter, to keep the rumen working. Many herds feed round bales alongside the silage.
• Add protein. A 30% to 40% protein supplement, distillers grains or alfalfa hay fills the gap.
• Give every cow a place at the bunk, 24 to 30 inches each, and sort boss cows from young and timid ones.
• Feed at the same time every day. Limit-fed cows act hungry even when their needs are met.
• Weigh the cows and the feed. A ration built for 1,300-lb cows underfeeds 1,500-lb cows.

Feeding management: transition, bunks and spoilage

Kentucky’s ID-264 gives a simple step-up: start at about 1% of body weight as fed, raise the offer by 5 lb a head only when cows clean it up and come to the bunk eagerly, hold each step for three or four days, and allow 10 to 14 days to reach the full ration. Fermented feed is new to most cows, and intake is often low for the first three to seven days.

Freshness matters as much as the amount. Do not leave silage in the bunk for more than a day: it heats and spoils once it meets air, cows eat less of it, and the bacteria behind listeriosis grow in those aerobic conditions, Kentucky warns. At the pile or bag, how much face you remove each day decides how much heats; our silage storage guide works out bag sizes and inches a day by herd size.

How soon you can feed new silage is a running argument. Kentucky says silage can be fed once it has fermented four to six weeks. When a southwest Iowa producer asked the question on AgTalk in September 2024, a few days after filling a concrete bunker, the replies split. A North Dakota producer said to wait at least 21 days for fermentation to finish. Several others, some recalling their dairy days, said they start feeding the day they chop or the next day, and two said to ease cattle onto it in small amounts; a northwest North Carolina farmer has fed from a freshly filled upright silo the same day for more than 55 years. A south-central Wisconsin producer explained what waiting buys you:

"It heats up less, and is more digestible/better feed. It probably won't be noticeable to a beef farm, but cows go down on milk with fresh corn silage. The heating is probably the biggest thing, same qith alfalfa. After 2 weeks, it's fairly stable. Before that, it will heat up, and takes longer to stop heating up."

— bsfarms, south central WI · AgTalk thread 1174429

Nitrate is the reason to be strict. An Iowa producer who starts feeding right away named the one exception: drought-stricken corn that could be high in nitrates. Nebraska Extension’s Options for Safely Using High-Nitrate Forage (2021) says ensiling done right can cut nitrate by 40% to 60%, that letting silage ferment at least 21 days works best, and that the silage should be sampled and tested before feeding. If the corn was drought-stressed or nitrate is otherwise a concern, give it the full three weeks and test it before it goes into the ration; our nitrate and prussic acid guide explains the risk.

Fall calvers, calving season and young cows

Silage earns its keep with cows that need energy in winter. A fall-calving cow nurses through the coldest months, and average hay alone can fall short; our fall vs spring calving comparison sets her winter energy and protein needs beside a spring calver’s. A north Missouri producer compared the two rations he has fed his fall calvers:

"Im shooting for 50lbs silage, 10-15lbs hay, 3 lbs distillers. Family has been doing that last couple years and it’s going well. Currently CRP hay at 60-70lbs and 5-10lbs corn DDGs. Just not quite enough goodies for a nursing fall calver."

— 6030Deere, N MO · AgTalk thread 1150350

In an earlier thread on pricing silage, the same producer put it in one line: “Especially for fall cows that need energy.” A Nebraska producer with fall-bred cows in a drylot described a ration of 20 to 25 lb of silage, 7 lb of alfalfa and free-choice CRP grass hay, and added that the cows were wasting a lot of the grass hay and he needed a more efficient bale feeder.

Spring calvers are a different case. Their energy needs do rise in late pregnancy, but silage can still give a cow already in good condition more than she needs, and producers worry about bigger calves: “big calves and big teats” were the two concerns the starter of a 2024 thread listed before buying silage from a nearby dairy. A producer who bale-grazes 60 cows wrote in December 2025, “Corn silage is good feed, but need to be careful not to get cows too fat and too much energy in the last trimester.” Around calving, practice splits:

"We cut the silage out to the mature cows but the first and second calvers still get some. Cuts down on the udder edema."

— Simocattle, Central SD · AgTalk thread 1199129

In the same April 2025 thread, a North Dakota producer with a dairy background called the idea that silage at calving makes the milk too rich “an old wives tale,” and a northwest Iowa feeder said he had fed 65 lb a day with cornstalks mixed in without problems. The common ground: young cows and thin cows benefit most from the extra energy, mature cows in good condition need it least. Sort by body condition when you preg check in the fall (our preg checking guide) and feed the groups differently; first-calf heifers are covered in our replacement heifer guide.

When corn silage pays for a beef herd

The feed is cheap; the system is not. Silage needs a planter and fertilizer or a neighbor’s standing corn, a chopper or a custom crew, packing and covering, a bag or bunker, a loader, a feed wagon or mixer and bunk space, and someone to feed every day. That is why the herd-size answers in the December 2025 thread ranged so widely. A Nebraska feeder drew the clearest line:

"If you are not already growing corn regularly, I wouldn’t switch my cropping plan for less than 150 head. Under that mark, use what you have."

— J HL, Nebraska · AgTalk thread 1222076

Smaller herds make it work by keeping the investment small. A southeast Wisconsin producer with about as many cows as the thread starter’s 20 to 30 wrote, “We have less than 6,000 dollars in an old chopper and 2 wagons. Rent the bagger, if you can,” and another 26-cow herd splits a bag with a neighbor. On the cost side, a northeast Montana operation with irrigated corn priced its silage this way:

"Inputs, 75$/seed 125/fert 25$ manure spreading 50$/irrigation 200$land cost 50$ plant and spray. 525$/35ton 10$/ton to chop. 25$/ton silage. High quality feed, low costs. Pretty good option for mother cows and backgrounding calves."

— lacockcattleco, N.E. MT · AgTalk thread 1222150

That is an irrigated 35-ton crop; few dryland farms will match it. A western Ontario producer who also wraps round bales compared the harvest bills directly:

"I get custom guys in and they chop/haul/pack about 10 acres per hour and when I worked there invoice back to pounds of dry matter I came up with .84 cents per pound of dry matter…..yes, less than a penny a pound, I’m about triple that on cut/rake/bale/gather/wrap and I still haul them all winter."

— 12thMan, Western Ontario · AgTalk thread 1222150

His figures are in Canadian dollars and cover harvest only, not growing the crop. To size the job, work from cows, days and pounds. The table assumes 15% storage shrink and 20 tons an acre.

Five to eight acres is a small job to schedule a custom crew for, and in Kentucky’s worked example 50 cows eating 30 lb a day remove only 9 to 10 inches a day from an 8-foot bag, which it calls borderline for keeping the face fresh. Silage tends to pay when:

• You already grow corn nearby and own, share or can hire chopping without a large minimum.
• The herd is big enough to keep a face fresh, or you can share storage with a neighbor.
• Hay is expensive or short, or your cows need the energy (fall calvers, young cows, backgrounded calves).
• Someone is already starting a tractor every day to feed.
• You value the grain at market. A Colorado producer warned, “We stole our own feed for years feeding cattle. Would have been much better off just selling the corn and getting on with life.”

When round-bale hay still wins

For many herds the cheapest system is still round bales and a few minutes of tractor time. An Alberta rancher made the case in the same December 2025 thread:

"We have around 230 cows and don't feed silage. With 2 people a 40 something year old tractor, a 20 something year old bale processor and worn out pickup with a feed hopper we can feed and bed the cows in less than an hour. Not much in the way of equipment or labor costs."

— Iamwill, Vauxhall Alberta Canada · AgTalk thread 1222076

Silage also has to be fed every day, and the cows still need hay. A Wisconsin producer who tried it found:

"One thing about corn silage, my cows ate it like candy and got way too fat. I found that I could only put out a limited amount in the feed wagon, requiring me to start a tractor every day. And I still had to have hay bales out."

— Jim, Driftless SW Wisconsin · AgTalk thread 1222150

And when the grain is worth more than the feed, selling it can beat feeding it:

"How I do it is figure total costs, then at the end of the year when you Are trying to find ways to make more money it’s always sell the corn and buy hay back cheaper. Don’t forget to add extra silage harvest equipment expenses."

— T-rowe, North central MO · AgTalk thread 1090413

Hay keeps through summer, can be bought in loads, fed every few days and moved between farms, and it suits herds that bale-graze or unroll in the pasture. The producer who warned about last-trimester energy described his alternative for 60 cows:

"We bale graze for the cows, preplace the bales, walk out every day and fork clean hay back in to the feeders, move poly wire and rings every 3-4 days. average under an hour a day feeding 60 cows and maybe 40 gallons of diesel fuel to feed and handle manure for the winter on those 60 cows."

— WCWI · AgTalk thread 1222076

Our bale grazing guide covers that system. For a fermented feed without a chopper, wrapped baleage is the middle path; see our comparisons of dry hay and baleage and of baleage, haylage and silage, and our guide to feeding baleage. Many herds do both: a limited daily silage feeding for energy, with free-choice round bales in a feeder for fill. The hay half of that ration still needs a good test; our hay test guide explains what the numbers mean, and our hay intake guide shows how to plan the bales.

Frequently asked questions

Is corn silage good for beef cows?

Yes, as an energy feed. Corn silage averages about 71% TDN and 8% crude protein on a dry basis, so it beats most grass hay on energy but needs a protein supplement and some long-stem hay. Because cows will overeat it, dry cows should be limit-fed to avoid over-conditioning, while nursing and young cows benefit most.

How much corn silage should a beef cow eat per day?

Published rations give a dry, late-pregnant cow 12 to 20 lb of silage as fed with about 15 lb of hay and 2 to 3.5 lb of distillers grains; an early-lactation cow gets about 30 lb. Producers feeding nursing fall calvers reported up to 50 lb. Set the amount from a forage test, cow weight and body condition.

Is corn silage cheaper than hay for beef cows?

Per pound of energy it can be: at 35% dry matter and 70% TDN, $40 to $50 silage costs about 8 to 10 cents per pound of TDN, the same as $80 to $100 grass hay and less than higher-priced hay, before shrink. Storage loss, harvest, equipment and daily feeding labor decide whether the whole system is cheaper.

Can beef cows get too fat on corn silage?

Yes. Cattle will eat 5 to 7 lb of silage per 100 lb of body weight if allowed, far more energy than a dry cow needs, and producers report fat cows on full-fed silage. Limit the silage, feed long-stem hay for fill and watch body condition, especially in the last trimester before spring calving.

How soon can you feed corn silage after chopping?

Kentucky Extension says silage can be fed after four to six weeks of fermentation. If the corn may be high in nitrate, as drought-stressed corn can be, Nebraska Extension says at least 21 days of fermentation works best and the silage should be tested before feeding. Producers who feed sooner report easing cattle onto it in small amounts.

The bottom line on corn silage for beef cows

Corn silage for beef cows is high-energy, low-protein feed that pays when the herd is big enough, the corn is close and someone is already feeding every day. Price it by the pound of TDN against your hay, value the grain at market, limit-feed it with protein and long-stem forage, and give fall calvers and young cows the first claim on it. For most herds round bales stay in the ration as the fill and the backup, so protect them: XES bale net wrap keeps bales tight from the field to the feeder, which means less of your hay ends up as waste in the lot. If you feed other people’s cattle, our guide to custom cattle feeding rates covers how to price silage and hay through their bill.

Research note: We read 36 archived AgTalk Stock Talk discussions about corn silage for beef cattle (499 posts, January 2021 to February 2026), then checked the linked Extension publications from Kentucky, North Dakota State, Ohio State, Nebraska and South Dakota State on October 11, 2026. Post counts include questions and replies, not counts of farms, and producer figures are what they reported at the time and place given; Canadian figures are in Canadian dollars. The cost-per-TDN, silage-value and acreage tables are XES calculations from the stated assumptions. XES sells bale net wrap and does not endorse any feed, seed or equipment brand; nothing here replaces a ration balanced by a nutritionist or veterinary advice.

Featured photograph: Dumping corn silage near Joliet, September 1978, USDA Natural Resources Conservation Service, a United States government work in the public domain, via Wikimedia Commons (USDA NRCS Montana collection). A high-dump wagon tips freshly chopped corn silage into a farm truck during harvest. Image unchanged apart from display resizing.