Cow Size Matters When Evaluating Calf Weaning Performance

Bigger cows must wean proportionally heavier calves to justify higher ownership costs.

Grazing cattle, various breeds

Carrie – stock.adobe.com

NASHVILLE, Tenn. (RFD-TV) — Weaning weights alone can be misleading when comparing cow performance, especially in herds with wide variation in mature cow size. That’s a key point highlighted by Kenny Burdine, livestock economist with the Kentucky Cooperative Extension Service, as producers review records and make culling decisions.

Larger cows often wean heavier calves, but they also cost more to maintain. Bigger cows consume more forage, hay, supplements, and minerals — and they often carry higher indirect costs tied to health, handling, transportation, and yardage. When culling decisions are based strictly on calf weaning weight, smaller-framed cows are more likely to be removed, gradually increasing average cow size and pushing herd costs higher over time.

Burdine’s analysis suggests producers should view productivity relative to cow size, not just raw calf pounds. In a budgeting exercise, he found that for every additional 100 pounds of mature cow weight, a cow needed to wean roughly 50 more pounds of calf just to stay economically competitive. That relationship shifts with cattle prices, but the principle remains consistent.

Tracking individual cow-calf performance helps identify which cows are truly earning their place.

Related Stories
Strong U.S. yields and steady demand leave most major crops well supplied, keeping price pressure in place unless usage strengthens or weather shifts outlooks.
While agriculture doesn’t predict every recession, the sector’s long history of turning down before the broader economy
The ACRE Act modestly reduces farmland borrowing costs now, with more savings possible once federal guidance clarifies which loans qualify.
ARC-CO delivers the bulk of 2024 support, offering key margin relief as producers manage tight operating conditions.
USDA’s steady yields and heavy global stocks keep grains range-bound unless demand firms or South American weather becomes a real threat.
The Tennessee Department of Agriculture is helping connect veterans with resources to pursue careers in farming and agriculture.
USMEF’s Jay Theiler discusses his leadership role in representing U.S. beef and pork and provides an update on this week’s conference in Indianapolis.
Manure from a hog farm is more than just waste; it is also becoming a key renewable resource for operations.

Tony St. James joined the RFD-TV talent team in August 2024, bringing a wealth of experience and a fresh perspective to RFD-TV and Rural Radio Channel 147 Sirius XM. In addition to his role as Market Specialist (collaborating with Scott “The Cow Guy” Shellady to provide radio and TV audiences with the latest updates on ag commodity markets), he hosts “Rural America Live” and serves as talent for trade shows.

LATEST STORIES BY THIS AUTHOR:

Lower U.S. and Mexican production means tighter sugar supplies and greater reliance on imports headed into 2026.
Tyson’s closure reflects deep supply shortages in the U.S. cattle industry, tightening packing capacity, weakening competition, and signaling more volatility ahead for cow-calf producers and feedyards.
Lower tariff rates and new rail-service proposals may improve corn movement efficiency during early-season marketing.
Crop producers face tightening credit and lower incomes, while strong cattle markets continue to stabilize finances in livestock-heavy regions.
Early Cattle-on-Feed estimates point to slightly tighter cattle supplies, reinforcing the need to monitor prices and timing for winter marketing.
Removing the 40% duty sharply lowers U.S. beef import costs on beef, coffee, fertilizer and fruit, and restores Brazil’s competitiveness during a period of tight domestic supply.
Agriculture Shows
From soil to harvest. Top Crop is an all-new series about four of the best farmers in the world—Dan Luepkes, of Oregan, Illinois; Cory Atley, of Cedarville, Ohio; Shelby Fite, of Jackson Center, Ohio; Russell Hedrick, of Hickory, North Carolina—reveals what it takes for them to make a profitable crop. It all starts with good soil, patience, and a strong planter setup.
Champions of Rural America is a half-hour dive into the legislative priorities for Rural America. Join us as we interview members of the Congressional Western Caucus to learn about efforts in Washington to preserve agriculture and tackles the most important topics in the ag industry on Champions of Rural America!
Featuring members of Congress, federal and state officials, ag and food leaders, farmers, and roundtable panelists for debates and discussions.
The goal of “Where the Food Comes From” is as simple as its name implies — host Chip Carter takes you along on the journey of where our food comes from — and we don’t just mean to the supermarket (though that’s part of the big picture!). But beyond where it comes from, how it gets there, and all the links in the chain that make that happen.
Join markets specialist Scott Shellady, better known as the Cow Guy, as he covers the market-close, breaking down headlines that drive the commodities and equities markets with commentary from respected industry heavyweights.