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.
“A lot of natural instincts involved in this format.”
September 12, 2025 10:25 AM
·
The Interior Department is proposing to repeal the Bureau of Land Management’s Public Lands Rule. This move would make huge strides to empower local decision-making and restore balance between conservation and protecting rural livelihoods tied to these public lands.
September 10, 2025 02:45 PM
·
Mother-daughter RanchHER duo, Lyn and Sherrie Ray, joined us on Wednesday’s Market Day Report for a sneak peek at tonight’s brand new episode of FarmHER + RanchHER.
September 10, 2025 01:45 PM
·
The 2022 Census of Agriculture revealed a more than 30% decrease in U.S. dairy farms since 2017. The shrinking industry is now uniting to advocate for itself while also adopting technology to reduce operational strain.
September 10, 2025 12:55 PM
·
The Supplemental Nutrition Assistance Program (SNAP) was once again on the national stage, front and center this week before the House Agriculture Committee.
September 10, 2025 11:10 AM
·
September 10, 2025 10:07 AM
·
