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.
Charly Cummings with Superior Livestock Auctions provides a real-time look at cattle market activity, demand trends, and what lies ahead for upcoming livestock auctions in Texas.
April 02, 2026 04:43 PM
·
Researchers with the University of Tennessee Institute of Agriculture are studying the clouded plant bug, which causes millions of dollars in damage to crops such as corn, soybeans, and cotton growing across the state.
April 02, 2026 03:49 PM
·
Rancher and Americans for Prosperity Director Tyler Lindholm breaks down the Wyoming Food Freedom Act, clarifies licensing questions, and discusses the future of local agriculture in the state.
April 02, 2026 03:43 PM
·
Farm Bureau Economist Dr. Faith Parum warns farmers to brace for more losses as the war in Iran sends shockwaves through the ag economy and raises input costs even further.
April 02, 2026 01:31 PM
·
Margin pressure and competitiveness concerns are shaping cautious outlooks.
April 02, 2026 12:40 PM
·
More than 15 million birds were affected by bird flu, but fewer outbreaks are helping bring egg prices down
April 02, 2026 11:50 AM
·
