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.
Despite rising costs and growing food insecurity, meat demand remained strong in 2025 as higher-income consumers offset cutbacks elsewhere. Economists break down the K-shaped economy, upcoming USDA cattle reports, livestock production outlooks, and renewed debate over beef imports and country-of-origin labeling heading into 2026.
January 20, 2026 02:47 PM
·
Livestock strength is carrying the farm economy, while crop margins remain tight and increasingly dependent on risk management and financial discipline.
January 19, 2026 05:00 PM
·
Strong balance sheets still matter, but liquidity, planning, and lender relationships are critical as ag credit tightens, according to analysis from AgAmerica Lending.
January 19, 2026 03:00 PM
·
Protein-driven dairy growth is boosting beef supply potential, creating an opening to support rural jobs and ground beef availability.
January 19, 2026 01:00 PM
·
New Resource Makes It Easier for People to Access Data on Rural Development funded Projects in Rural Communities
January 19, 2026 11:50 AM
U.S. agriculture entered the week with mixed signals as weather, logistics, and markets shaped early-year decisions. Here is a regional breakdown of domestic crop and livestock production for the week of Monday, Jan. 19, 2026.
January 19, 2026 11:40 AM
·
