Feed Grain & Feedlot Economics

By Corentin Britten, Founder

How Feed Costs Drive Beef Supply

Grain-fed beef (all USDA Choice and Prime cattle in the US, and all "100-day grain-fed" Australian export product) is produced in feedlots where cattle eat a high-energy grain-based diet. The cost of that grain is the largest variable input in feedlot production: when grain prices rise, feedlot margins compress; when they fall, margins expand.

For a procurement team, understanding feedlot economics explains why grain-fed beef prices move differently from grass-fed, when feedlots will sell forward versus hold back, and how feed-cost pressure can constrain supply in specific product categories.

US Feedlot Economics

The Feed-to-Beef Ratio

The primary input cost for a US feedlot is corn, and the ratio of the corn price to the fed-cattle price determines profitability. When corn is cheap relative to cattle, feedlots are profitable and place more cattle; when corn is expensive relative to cattle, they lose money and cut placements. As a rule of thumb, it takes roughly six to seven pounds of grain to produce a pound of gain in a feedlot, so feed cost flows almost directly into the cost of grain-fed beef.

Feeder Cattle Often Cost More Than Feed

The cost of buying feeder cattle (young animals entering the feedlot) is frequently larger than the cost of the grain to finish them. When the young-cattle supply is tight, feeder prices run high, and even moderate grain costs leave feedlot margins thin because the input animal is so expensive. The feeder-cattle futures curve is the single best forward-looking indicator of beef supply cost: when it is steep and high several months out, expect tighter supply and firmer prices in that window.

Australian Feedlot Economics

Stock Feed Wheat: The Key Input

In Australia the primary feedlot grain is wheat (with some barley), and the key reference is stock-feed wheat delivered to the Darling Downs, Queensland's main feedlot belt. Drought and rising input costs can push that price up sharply: dry weather stalls grower selling, and higher fuel and fertiliser costs make producers reluctant to lock in grain sales, all of which supports prices just as feedlots are trying to extend cover.

Barley vs Wheat, and Export Parity

Barley is an alternative feedlot grain, and the spread between barley and wheat (and between spot and new-crop) gives feedlots tactical flexibility in grain procurement. A notable dynamic appears when global freight costs spike: Australian domestic grain can trade above export parity, meaning domestic feedlots pay more than if the grain were exported, because tight local demand absorbs grain that would normally ship out. That is atypical and signals a tight domestic feed market.

Fertiliser as a Compounding Risk

Energy-market shocks hit feed economics twice. Australia imports a large share of its urea from the Middle East Gulf, so a chokepoint disruption like the 2026 Strait of Hormuz crisis raises fertiliser costs sharply. Higher fertiliser costs reduce pasture productivity, slow the herd rebuild, and raise the cost of growing feed grain at the same time. A single geopolitical event can therefore lift feed-grain prices and reduce medium-term cattle supply, a genuinely compounding risk. See Geopolitical & Freight Risk.

How Feed Economics Affect Beef Supply

• Supply timing. When feedlot margins compress, feedlots slow placements, which means less grain-fed beef ready for slaughter several months later, reducing forward supply of 100-day grain-fed product.
• Product mix. When grain is expensive, processors may lean on grass-fed cattle instead, shifting the export product mix.
• Competition for cattle. Rising feed costs push feedlots to bid harder for feeder cattle even as processors bid for grass-fed kill cattle, so both sectors compete for the same pool of animals and push cattle prices up, compressing processor margins on grass-fed production.

Practical Implications for a Beef Buyer

Where Judgment Matters

• Temporary vs structural feed-price spikes: growers may sell more as prices rise and weather improves, but fertiliser costs and dry conditions can be multi-season issues. Short-term feed-price forecasts are frequently wrong.
• Placement response to margin pressure: Australian feedlots have historically maintained throughput even on thin margins, while US feedlots tend to respond more quickly to margin signals, a difference rooted in capital structure and processor contracts.

Related Articles

• Australian Cattle Supply & Domestic Procurement
• Beef Quality Grades & Product Specifications
• Geopolitical & Freight Risk
• US Cattle Herd Cycle & Supply Fundamentals

Frequently Asked Questions

How do feed-grain prices affect beef supply?

Grain is the main feedlot input, so when grain or feeder-cattle costs rise, feedlot margins compress and placements fall, tightening grain-fed supply months later.

How much grain does it take to add weight in a feedlot?

Roughly six to seven pounds of grain per pound of gain, so feed cost flows almost directly into the cost of grain-fed beef.

What grain do Australian feedlots use?

Mainly wheat with some barley; stock-feed wheat delivered to the Darling Downs is the key reference, and drought and fertiliser costs move it sharply.