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
FFA Program Specialist Ashli Weinrich highlights how the FFA Next Gen Conference helps ag students explore career opportunities and build skills for the future.
Strong exports support cattle and hog market fundamentals.
Watch China’s demand signals for export direction.
Shaun Haney joined RFD News to discuss the potential impact of the Trump-Xi summit uncertainty, ongoing agricultural trade talks, and why geopolitical developments could carry important implications for farmers and global commodity markets.
Lower production is tightening honey supplies across markets.
Rising protein demand supports long-term trade in feed and meat.
Diversification is critical as conservation reshapes rural economies.

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:

Pollination costs remain volatile, raising planning risk for specialty crop producers.
The USDA Agricultural Outlook Forum highlights modest price support from tighter supplies across cotton, grains, dairy, livestock, and sugar into 2026.
Farm Bureau Economist Faith Parum discusses the latest Farm Bill proposal and the path ahead for Congress and U.S. agriculture.
President Donald Trump signed an executive order this week to accelerate domestic production of phosphorus and glyphosate, signaling that farm input availability is now treated as a national security risk.
The global rice surplus outweighs tighter U.S. supplies, pressuring prices.
A weaker dollar supports export demand and may strengthen crop prices.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.