Area(s) of Specialization
Beef Cattle Reproduction
Reproductive Molecular Biology
B.S. , Purdue University, 1981
M.S. , Purdue University, 1984
Ph.D. , Washington State University, 1989
Post Doctoral Associate , Hospital for Sick Children, Toronto, Ontario, 1989 - 1992
Dr. Grieger is from a small town in northeastern Indiana. He was trained in reproductive physiology with an emphasis on beef cattle. His teaching responsibilities cover 6 different courses in ASI. These include a general reproductive physiology course across all farm animals, and a reproductive management class that includes instruction on estrous synchronization, ultrasonography and pregnancy diagnosis. He also teaches several artificial insemination schools throughout the year. He teaches two courses in the area of biotechnology and research techniques related to animal agriculture.
DrG has led several international study tours to Central and South America and South Africa. He also serves as the academic advisor to several undergraduate students.
DrG’s research focus includes timed-AI of beef heifers, embryo development and male fertility.
DrG has a 80% teaching appointment that covers 6 different courses at the undergraduate and graduate level. He teaches our main reproductive physiology course, ASI 400, Farm Animal Reproduction. This covers all aspects of reproduction of farm animals and applications of physiology to all species of livestock. ASI 512, Bovine Reproductive Technologies, is a "hands-in" course that includes lecture as well as labs where we palpate and conduct ultrasonography on cows. As seen in the picture, some students learn quicker than others, but by the end of the semester, they all know which end of the cow is important and where the sleeve goes.
For his biotechnology-related courses, the lecture and lab content involves relatively new techniques and their application to meat animal production. Topics include semen sexing, in vitro fertilization, cloning and gene editing.
Introduction to Animal Biotechnology [ASI 210]
Farm Animal Reproduction [ASI 400]
Bovine Reproductive Technologies [ASI 512]
Applied Animal Biotechnology [ASI 600]
Bovine Artificial Insemination [ASI 662]
Molecular Reproductive Endocrinology (ASI 831)
DrG has a 20% research appointment and his applied research interests focus on studies using timed-insemination to eliminate estrous detection in beef heifers. His objective is to fine-tune different systems that result in acceptable AI conception rates that are economical and practical for producers to adopt in their operations. His more basic research interest includes the isolation of potential stem cells from bovine placental tissue. His objective is to introduce fluorescent markers to these cell and then follow their ability to incorporate into various tissues of a developing embryo or fetus.
He is also interested in the scholarship of teaching and investigating the best ways to engage students in a large classroom as well as the effectiveness of assessment via types of testing.