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.
USMEF’s Jay Theiler discusses his leadership role in representing U.S. beef and pork and provides an update on this week’s conference in Indianapolis.
November 14, 2025 03:36 PM
·
As economic pressures continue to squeeze agriculture, ag lenders are signaling a more cautious outlook for farm profitability heading into next year, particularly among grain producers facing lower commodity prices and higher operating costs.
November 14, 2025 02:10 PM
·
The Dairy Checkoff’s new approach to consumer marketing helps farmers bridge the gap between physical vs. digital touchpoints and deliver more end sales.
November 14, 2025 01:52 PM
·
USDA released the November WASDE Report on Friday, the first supply-and-demand estimate to drop since September, just before the 43-day government shutdown.
November 14, 2025 12:22 PM
·
Expanded aerial capacity strengthens the U.S.–Mexico buffer against screwworm, providing cattle producers with stronger protection heading into winter and reducing risk to herds along the southern tier.
November 14, 2025 10:34 AM
·
Some sustainability shifts are not particularly challenging and can be implemented with resources already available to farmers and ranchers on their operations.
November 13, 2025 01:00 PM
·
FD-TV’s own Tammi Arender caught up with Gregg Doud, President and CEO of the National Milk Producers Federation.
November 13, 2025 12:05 PM
·
USMEF President and CEO Dan Halstrom shares how recent trade talks are influencing U.S. red meat global sales and the importance of key trade agreements like the USMCA.
November 12, 2025 03:07 PM
·
Winter weather will challenge livestock producers working to rebuild their herds despite harsh conditions.
November 12, 2025 01:20 PM
·
