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
We spotlight a student from Illinois who is helping to launch a middle school chapter and teaching younger students about the impact of agriculture in their communities.
As the government shutdown pushes the farm economy closer to the brink, Sens. Grassley and Ernst of Iowa are raising their voices for agriculture.
Considering raising your own replacements instead of buying bred heifers? Three key factors to consider before investing capital.
RFD-TV farm legal and taxation expert, Roger McOwen, joins us with his perspective on what farmers can expect from the delayed aid package.
Microsoft’s partnership with the National FFA Organization is helping future ag leaders gain the tools they need to drive innovation in farming and beyond.
Reliable, clearly graded middle meats still anchor demand; programs that deliver consistent eating quality and simple, confidence-building menus capture more repeat visits—and more value—back through the beef chain.
U.S. Senator Joni Ernst (R-IA) joined us on Wednesday’s Market Day Report to share why Ames is uniquely positioned to support expanded USDA operations.
Delaware FarmHER Katie Evans turns “ugly” produce into delicious treats through her nationally recognized brand, The Frozen Farmer
George Baird, with the American Society of Farm Managers and Rural Appraisers (ASFMRA), joins us with updates on how this year’s rice harvest is shaping up.

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:

For aging operators and their rural neighbors, staying socially engaged is a practical strategy to preserve decision-making capacity and farm vitality.
Until a phased reopening is inked, plan for tighter feeder availability, firmer basis near border yards, and continued reliance on domestic and Canadian sources.
Set targets and use forwards, futures, or options to manage downside while preserving room for rallies.
Bangladesh’s buying surge offers temporary relief for U.S. farmers facing weaker Chinese demand, highlighting how global politics can reshape export outlets overnight.
RFD-TV Markets Expert Tony St. James breaks down the USDA’s newly unveiled plan to rebuild the US beef herd and the industry’s spectrum of responses to it.
Rising demand for Comfort Colors t-shirts reinforces the pull for U.S.-grown cotton, linking rural fiber production to a fast-growing mainstream apparel brand.
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.