Dairy cows produce more milk for heifers than for baby bulls, according to new research from Kansas State University and Harvard University.
Researchers studied lactation records for more than one million dairy cattle across the country.
Their findings contradicted evolutionary biology theories that predicted bias was in favor of sons. The cows actually produced more milk for their female offspring.
“Daughters seemed to have the most dramatic effect on the initial development of the mammary gland because the bias against sons was greatest in the first lactation,” said K-State Department of Animal Sciences and Industry associate professor Barry Bradford.
The study also found that the sex of the first baby might determine the amount of milk produced for the following children.
The results were available in the scientific journal PLOS One.
National FFA Southern Region Vice President T. Wayne William talks about Wear Blue Day, the history of the blue jacket, and why the tradition continues to inspire pride and connection among FFA members nationwide.
February 27, 2026 12:21 PM
·
The closure of Lubbock Feeders highlights mounting pressure on the U.S. cattle supply, according to the Texas Cattle Feeders Association, as border restrictions and costs strain feedyards.
February 27, 2026 11:59 AM
·
NCBA Chief Counsel Mary-Thomas Hart discussed the legal process behind delisting the prairie chicken, the challenges ranchers faced under the bird’s previous protections, and the benefits of cooperative habitat management for both livestock and wildlife.
February 27, 2026 10:55 AM
·
Food demand is stable but price-sensitive across rural markets. For agriculture and rural communities, the important signal is not optimism — it is stability.
February 27, 2026 07:00 AM
·
Stable blending demand continues to underpin corn use despite export volatility.
February 27, 2026 06:00 AM
·
Farm Bureau economist Danny Munch explains the importance of timely enrollment, and how the program helps dairy producers safeguard their operations against volatile milk markets.
February 26, 2026 02:25 PM
·
