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.
Late harvest and tight supplies shape crop progress and agribusiness this week. Here is a regional snapshot of harvest pace, crop conditions, logistics, and livestock economics across U.S. agriculture for the week of Dec. 1, 2025.
December 01, 2025 04:22 PM
·
Cargill’s commitment to keep plants open helps preserve competition as Tyson removes capacity amid historically tight cattle supplies.
December 01, 2025 03:55 PM
·
Tryston Beyrer, Crop Nutrition Lead at The Mosaic Company, examines planning trends as producers weigh corn and soybean plantings for 2026.
December 01, 2025 03:27 PM
·
Brooks York with AgriSompo joins us to offer an update on what agents are prioritizing as the calendar year winds down.
December 01, 2025 03:06 PM
·
The newly elected Executive Vice President of the Tennessee Cattlemen’s Association (TCA), Dale Parker, joins us on-set to share his vision for his state’s cattle industry.
December 01, 2025 02:47 PM
·
SDRP Stage 2 now helps producers recover shallow, uninsured losses from major 2023–2024 disasters, with streamlined sign-ups open through April 30.
December 01, 2025 11:16 AM
·
