Research Animal Scientist
Reproductive Physiologist

USDA-ARS Fort Keogh LARRL 
243 Fort Keogh Road
Miles City, MT 59301-4016
Phone: (406)874-8215
Fax: (406)874-8289
Email:  tom.geary@ars.usda.gov

Biographical Information:

Tom conducts research to improve reproductive efficiency in beef cattle. The goal of this research is to identify tools to improve calving distribution management. Research includes factors affecting postpartum anestrus recovery, pubertal transition, and pregnancy establishment and maintenance early in the breeding season. This research also focuses on understanding early embryonic loss and applications that minimize these losses. Collaborative research includes collection of various phenotypic traits involved in fertility of both bulls and cows to lead toward gene discovery of fertility markers.

Research

Tom's Publications

Fort Keogh Publications
(look here for downloadable .pdf files)

Educational Background:

• BS - Animal Science - Montana State University, 1985
• MS - Animal Science - Washington State University, 1989
• PhD - Animal Science - Washington State University, 1993

Current Research Projects:

• Evaluating mechanisms involved in pregnancy establishment and maintenance
• Re-evaluation of fertility of a heifer’s first verses third pubertal estrus.
• Evaluating factors affecting age of puberty and fertility of young bulls.
• Determining the value of early weaning on reproductive performance of lactating beef cows and replacement heifers in extensive rangeland environments.

USDA, ARS Fort Keogh Livestock and Range Research Laboratory
243 Fort Keogh Rd., Miles City, MT  59301-4016
Phone: 406-874-8200, Fax:  406-874-8289