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
The American Farm Bureau Federation’s 2026 agenda centers on labor stability, biosecurity, and economic resilience for family farms. Expanded DMC coverage improves risk protection for dairy operations facing tighter margins.
A high-stakes legal case in a South Dakota federal court concerning misleading country-of-origin labeling (MCOOL), such as “Product of the USA,” on food products, will significantly impact U.S. agricultural policy for years to come.
Agronomy experts explain why standing crop residue protects soil and reduces costs for crop growers, while shredding often yields little benefit at higher costs.
Secretary Rollins also met with specialty crop producers at a local strawberry farm to discuss workforce needs and the Trump Administration’s recent wins related to significantly cutting the cost of H-2A labor for California farmers.
Brent Graves, auctioneer and mentor, shares his journey supporting youth in agriculture, livestock competitions, and how he is turning junior livestock auctions into a classroom for youth in agriculture.
China’s beef policy risk stems from domestic volatility, making export demand inherently unstable. Jake Charleston with Specialty Risk Insurance offers his perspective on cattle markets, risk management, and producer sentiment.

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:

Only properly documented, unexhausted fertilizer applied by prior owners may qualify for Section 180 expensing; broader nutrient-based claims carry significant legal and tax risk.
Urea and phosphate see the biggest price relief from tariff exemptions, but nitrogen markets remain tight, and spring demand will still dictate pricing momentum.
Lower turkey and wheat prices helped ease Thanksgiving costs, but underlying farm-sector pressures remain significant.
Cattle and hog supplies continue to tighten while dairy output expands, creating a split outlook in which red-meat prices soften and milk values come under pressure from larger supplies.
Firm live cow prices and shifting dairy-side culling suggest cull cow values may stay stronger than usual this winter despite weaker cow beef cutout trends.
Lewis Williamson with HTS Commodities shares an update on post-WASDE grain movement, with corn leading export momentum, soybeans steady, and wheat and sorghum continuing to move selectively.
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.