STUDY: Dairy cows produce more milk for female offspring (2014)

Dairy cows produce more milk for heifers than for baby bulls, according to new research from Kansas State University and Harvard University.

24881475-bg1.jpg

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.

Related Stories
A spicy sauce made with chili sauce and crushed red pepper flakes gives these Spicy Beef Back Ribs amazing flavor.
The key to success when cooking ribs is the low temperature and several hours of cooking time. However, this beef primal cut also contains popular tender, juicy cuts of meat like Ribeye Roast and Ribeye Steaks.
The Round Primal is home to lean, inexpensive cuts from the rump and hind legs. The muscles in this area are used for movement, so the beef is leaner and less tender. These cuts are often sold as roasts, steaks for marinating, or even Ground Beef.
One skillet, five ingredients and a few minutes are all you need to get this spiced up hash on the table!
The Sirloin is home to popular fabricated cuts but is first separated into the Top Sirloin Butt and Bottom Sirloin Butt. In the Top Sirloin, you’ll find steaks great for grilling, while the Bottom Sirloin provides cuts like Tri-Tip and Sirloin Bavette, which are good for roasting or grilling.
The brisket comes from the cattle’s breast, so it can be tougher because it is used for movement. An ideal cut for cooking low and slow on the barbecue or in a slow-cooker.

LATEST STORIES BY THIS AUTHOR:

A booming butterfat market is good for some dairy products but threatens efficiency and margins for cheesemakers unless protein levels catch up
Duane Simpson, CEO of the National Council of Farmer Cooperatives (NCFC), joined us in Monday’s Market Day Report to share his perspective on the USDA’s plan and potential impact on producers.
U.S. Farmers Navigate Harvest Pace, Costs, Policy Shifts
Land values are increasing faster than farm income, making it more challenging for young and beginning farmers to expand, but supporting equity for current landowners.
Beginning Farmers and Ranchers, Crop Insurance, and a Business Planning Complication
Agriculture Shows
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.
From soil to harvest. Top Crop is an all-new series about four of the best farmers in the world—Dan Luepkes, of Oregan, Illinois; Cory Atley, of Cedarville, Ohio; Shelby Fite, of Jackson Center, Ohio; Russell Hedrick, of Hickory, North Carolina—reveals what it takes for them to make a profitable crop. It all starts with good soil, patience, and a strong planter setup.
Champions of Rural America is a half-hour dive into the legislative priorities for Rural America. Join us as we interview members of the Congressional Western Caucus to learn about efforts in Washington to preserve agriculture and tackles the most important topics in the ag industry on Champions of Rural America!
Featuring members of Congress, federal and state officials, ag and food leaders, farmers, and roundtable panelists for debates and discussions.