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Dr. Jamie Courter is your Mizzou Beef Genetics Extension Specialist

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By Jared E. Decker Many of you have probably noticed that things have been a lot less active on the A Steak in Genomics™   blog, but you probably haven't known why. In January 2021, I was named the Wurdack Chair in Animal Genomics at Mizzou, and I now focus on research, with a little bit of teaching. I no longer have an extension appointment. But, with exciting news, the blog is about to become a lot more active! Jamie Courter began as the new MU Extension state beef genetics specialist in the Division of Animal Sciences on September 1, 2023. I have known Jamie for several years, meeting her at BIF when she was a Masters student. I have been impressed by Jamie in my interactions with her since that time.  Dr. Courter and I have been working closely together the last 6 weeks, and I am excited to work together to serve the beef industry for years to come! Jamie holds a bachelor’s degree in animal science from North Carolina State University and earned a master's degree in animal

Ancient African Cattle First Domesticated in Middle East, MU Study Reveals
New genetic history of cattle allows for better breeding methods, reveals new aspects of human history

From PLOS Genetics doi:10.1371/journal.pgen.1004254.g005
Story Contact:
Nathan Hurst, hurstn@missouri.edu, 573-882-6217
COLUMBIA, Mo. – Geneticist and anthropologists previously suspected that ancient Africans domesticated cattle native to the African continent nearly 10,000 years ago. Now, a team of University of Missouri researchers has completed the genetic history of 134 cattle breeds from around the world. In the process of completing this history, they found that ancient domesticated African cattle originated in the “Fertile Crescent,” a region that covered modern day Iraq, Jordan, Syria and Israel.
Lead researcher Jared Decker, an assistant professor of animal science in the MU College of Agriculture, Food and Natural Resources, says the genetics of these African cattle breeds are similar to those of cattle first domesticated in the Middle East nearly 10,000 years ago, proving that those cattle were brought to Africa as farmers migrated south. Those cattle then interbred with wild cattle, or aurochs, which were native to the region, and changed their genetic makeup enough to confuse geneticists.
In their study published in PLOS Genetics, Decker and a team of international researchers compared the similarities and differences among the genetics of many different cattle breeds to determine how the breeds are related. Their research found mixing of native cattle in Indonesia with imports from India, European and African cattle in Italy and Spain, and European and Asian cattle in Korea and Japan.  The MU researchers also determined that unique American cattle breeds, such as Texas longhorns, are the result of breeding between Spanish cattle, transported from Europe by explorers in the 16th century, and breeds of Zebu, or Brahman cattle from India imported into the U.S. from Brazil in the late 1800s. Decker says these discoveries help advance genetics and uncover important information about human history.
“In many ways, the history of cattle genetics mirrors human history,” Decker said. “In the case of African cattle, anthropologists and geneticists used to suspect that domesticated African cattle were native to the continent, when in fact, they were brought by migrating peoples thousands of years ago. By better understanding the history of the animals we domesticate, we can better understand ourselves.”
Decker also said that cattle breeding is important for animal farmers looking to maximize their herds’ meat and dairy production. He says that understanding the genetic history of cattle breeds is important when looking for solutions to agricultural issues.
“Now that we have this more complete genetic history of cattle worldwide, we can better understand the diversity of the species,” Decker said. “By understanding the variations present, we can improve cattle for agricultural purposes, whether that is through breeding more disease-resistant animals or finding ways to increase dairy or beef production.”
A complete copy of  the MU study can be found online at: http://www.plosgenetics.org/doi/pgen.1004254
From PLOS Genetics doi:10.1371/journal.pgen.1004254.g005

Comments

Joe C. Paschal said…
Great work! Wondering and then knowing how breeds were developed and mixed has always fascinated me!Kudos to all of you!

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