The CDCB office will be closed on Monday for Memorial Day, but service processing will continue as normal. CDCB wishes you and your family a Happy Memorial Day in rememberance of those who have sacrificed their lives in the service of the nation!

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About Us

About the Council on Dairy Cattle Breeding

Mission || Staff || Board || Committees || History


To maintain a high standard of integrity in data collection systems providing data for the National Dairy Genetic Evaluation Program(GEP) database; to provide data to AIPL for use in research and education, including the development of effective procedures for estimating the genetic merit of dairy animals; to provide data and summaries of information to research and extension personnel, and to others for educational purposes as appropriate; to improve the genetic merit and production efficiency of U.S. dairy cattle; and to enhance the world market competiveness of the U.S. dairy industry.

CDCB Staff Contact List

Office Line: 240-334-4164


João Dürr
CDCB Chief Executive Officer

Ext: 311

Ezequiel Nicolazzi
CDCB Technical Director

Ext: 321

George Wiggans
CDCB Technical Advisor

Ext: 322

Ike Nnabugwu
CDCB Systems Administrator
Ext: 300

H. Duane Norman
CDCB Technical Advisor and Industry Liaison

Ext: 315

Leigh Walton
CDCB Technical Applications Manager

Ext: 314

Jay Megonigal
CDCB Data Scientist
Ext: 312

Kristen Gaddis
CDCB Geneticist
Ext: 323

Marius Temzem
CDCB Database Administrator
Ext: 318

Kaori Tokuhisa
CDCB Genomic Data Analyst
Ext: 313

Rohith Shetty
CDCB Programmer
Ext: 320

Kendra Randall
CDCB Administrative Assistant
Ext: 310


History pages include information about the history of US dairy evaluations, dairy evaluations in the United States, and past AIPL research staff.

Last Modified: 04/05/2017