Animal and Range Sciences Faculty |
South
Dakota State University |
| George Perry, Ph.D. Associate Professor, Beef Reproductive Management Specialist
214 Animal Science Complex |
|
Education
Doctor of Philosophy, University of Missouri: 2003
Master of Science, University of Missouri: 2000
Bachelor of Science, Texas A&M University: 1998
Selected organizations/appointments:
American Society of Animal Science
Society for the Study of Reproduction
Area of Research
Our research is focused on Reproductive efficiency and factors that influence pregnancy rates and the anestrous postpartum interval. Specifically how ovulatory follicle size at time of GnRH induced ovulation can influence pregnancy rates and embryonic/fetal mortality, and the effectiveness if different estrous synchronization protocols to shorten the anestrous postpartum interval.
Publications
REFEREED SCIENTIFIC PUBLICATIONS:
Perry, G. A.,
and M. F. Smith. 2004. Utilizing a simulation exercise to teach principles of
bovine reproductive management. J.
Anim. Sci. 82:(Accepted).
Perry, G. A., M. F. Smith, and T. W. Geary. Ability of CIDRs and melengestrol acetate to induce estrous cycling status in anestrous postpartum beef cows. J. Anim. Sci. 82:695-704.
Perry, G. A., M. F. Smith, and D. J. Patterson. 2002. Evaluation of a fixed-time AI protocol for postpartum suckled beef cows. J. Anim. Sci. 80:3060-3064.
Perry, G. A., F. N. Kojima, B. E. Salfen, J. F. Bader, D. J. Patterson, and M. F. Smith. 2002. Effect of an orally active progestin on follicular dynamics in cycling and anestrous postpartum beef cows. J. Anim. Sci. 80:1932-1938.
Burke, J. M., D. E. Spiers, F. N. Kojima, G. A. Perry, B. E. Salfen, S. L. Wood, D. J. Patterson, M. F. Smith, M. C. Lucy, W. G. Jackson, and E. L. Piper. 2001 Interaction of endophyte-infected fescue and heat stress on ovarian function in the beef heifer. Bio. Reprod. 65(1): 260-268.
Abstracts:
Perry, G. A., M. F. Smith, A.J. Roberts, M.D. MacNeil, and T.W. Geary. 2004. Effect of ovulatory follicle size on pregnancy rates and fetal mortality in beef heifers. J. Anim. Sci.
Perry, G. A., M. F. Smith, M. C. Lucy, A. J. Roberts, M. D. MacNeil, and T. W. Geary. 2003. Effect of ovulatory follicle size at time of GnRH injection or standing estrus on pregnancy rates and embryonic/fetal mortality in beef cattle. Western Section American Society of Animal Science Proceedings 54:281 .
Perry, G. A., M. F. Smith, A. J. Roberts, M. D. MacNeil, and T. W. Geary. 2003. Effect of ovulatory follicle size at time of GnRH injection on preovulatory serum concentrations of estradiol in beef cows detected or not detected in standing estrus. Bio. Reprod. 68(Suppl. 1):330 Abstr. 530.
Perry, G. A., M. F. Smith, and T. W. Geary. 2003. Ability of CIDRs and melengestrol acetate to induce estrous cycling status in postpartum beef cows. Society for Theriogenology 2003 Annual Conference & SFT/ACT Symposia Preecedings p.26.
Perry, G. A., W. V. Welshons, and M. F. Smith. 2002. Basis of melengestrol acetate as a progestin in cattle. Bio. Reprod. 66(Suppl. 1): 336 Abstr. 588.
Perry, G. A., T. W. Geary, M. C. Lucy, and M. F. Smith. 2002. Effect of follicle size at time of GnRH-induced ovulation on luteal function and fertility. J. Anim. Sci. 80(Suppl. 2): 114 Abstr. 40.
Perry, G. A., J. F. Bader, M. F. Smith, and D. J. Patterson. 2001. Evaluation of a fixed-time AI protocol for postpartum beef cows. J. Anim. Sci. 79(Suppl. 1): 462 Abstr. 1915.
Perry, G.
A., and M. F. Smith. 2001. Utilizing a group project to learn principles of
reproductive management. J. Anim. Sci. 79(Suppl. 1): 165 Abstr. 683.
Patterson, D.
J., J. F. Bader, K. K. Graham, F. N. Kojima, G. A. Perry, M. S. Kerley,
and M. F. Smith. 2001. Addition of GnRH to a melengestrol acetate (MGA)-prostaglandin
F2a (PG) estrous
synchronization protocol in postpartum beef cows. J. Anim. Sci. 79(Suppl. 1):
250 Abstr. 1032.
Ricke, W. A.,
E. W. McIntush, G. A. Perry, G. D. Niswender, and M. F. Smith. 2001.
Effect of gonadotrophins (LH and FSH) and (or) prostaglandin F2a
(PGF2a) on tissue inhibitor
of metalloproteinases (TIMP)-1 production by ovine corpora lutea. Bio. Reprod.
64(Suppl. 1): 196 Abstr. 230.
Burke, J. M.,
R. W. Rorie, G. A. Perry, and D. H. Keisler. 2001. Changes in ovarian
function in mature beef cows grazing endophyte-infected (E+) tall fescue. Bio.
Reprod. 64(Suppl. 1): 344 Abstr. 606. Perry, G. A.,
F. N. Kojima, B. E. Salfen, J. F. Bader, D. J. Patterson, and M. F. Smith. 2000. Effect of an orally active
progestin on follicular
dynamics in cycling and anestrous postpartum beef cows. J. Anim. Sci. 78 (Suppl.
1):218 Abstr. 917. Perry, G. A.,
M. Manikkam, H. A. Garverick, and M. F. Smith. 2000. Ontogeny of FSH receptor
and steroidogenic enzyme mRNA
expression in bovine fetal ovaries. Bio. Reprod.
62(Suppl. 1): 196 Abstr. 227. Perry, G. A.,
R. S. Prather and M. F. Smith. 1999. In vitro meiotic competence of oocytes
collected from porcine antral follicles. J. Anim. Sci. 77(Suppl. 1): 73 Abstr.
202. Perry, G. A.,
R. S. Prather, K. Allsup, L. Falch, M. F. Smith. 1999. Protein synthesis and
secretion by preantral, early antral, and antral porcine follicles. Bio. Reprod.
60(Suppl. 1): 110 Abstr. 53. NON-REFEREED SCIENTIFIC PUBLICATIONS AND PROCEEDINGS:
Perry, G. A.,
M. F. Smith, M. C. Lucy, A. J. Roberts, M. D. MacNeil, and T. W. Geary. 2003.
Effect of ovulatory follicle size at time of GnRH injection or standing estrus
on pregnancy rates and embryonic/fetal mortality in beef cattle. Proceedings of
the Geary T. W., and
G. A. Perry. 2003. Evaluating new measurements of fertility in beef cows.
Fort Keogh Livestock and Range Patterson, D. J.,
J. E. Stegner, G. A. Perry, F. N. Kojima, and M. F. Smith. 2002. Review
of estrus synchronization systems:MGA. Perry, G. A.,
T. W. Geary, M. C. Lucy, and M. F. Smith. 2002. Effect of follicle size at time
of GnRH-induced ovulation on luteal function and fertility. Proceedings of the
Western Section American Society of Animal Science. Fort Collins, CO. June
19- Patterson, D. J.,
J. E. Stegner, G. A. Perry, F. N. Kojima, and M. F. Smith. 2001. Methods
of Estrous Synchronization – GnRH Perry, G. A., J.
F. Bader, M. F. Smith, and D. J. Patterson. 2001. Evaluation of a fixed-time AI
protocol for postpartum beef cows. Proceedings
from the NCR-87 annual meeting. Brookings, SD. June 6-7, 2000. Patterson, D. J.,
S. L. Wood, G. A. Perry, F. N. Kojima, and M. F. Smith. 2001. Emerging
protocols to synchronize estrus in replacement heifers
and postpartum beef cows. Proceedings from Improving Reproductive Performance,
The National Association of
Animal Breeders. San Antonio, TX. July 11, 2001. Patterson, D. J.,
S. L. Wood, G. A. Perry, F. N. Kojima, and M. F. Smith. 2001. Emerging
protocols to synchronize estrus in Perry, G. A.,
F. N. Kojima, B. E. Salfen, J. F. Bader, D. J. Patterson, and M. F. Smith. 2000.
Effect of an orally active progestin on follicular
dynamics in cycling and anestrous postpartum beef cows. University of
Missouri-Columbia, Animal Sciences Department
Report. p. 63-68. Perry, G. A.,
R. S. Prather, M. F Smith. In vitro meiotic competence of oocytes collected
from porcine antral follicles. 1999. EXTENSION
PUBLICATIONS Perry, G. A.,
Detection of standing estrus in cattle. South Dakota State University Extension
Facts Sheet. SDSU Fact Sheet Perry, G. A.,
The bovine estrous cycle. South Dakota State University Extension Facts Sheet.
SDSU Fact Sheet FS921A Perry, G. A.,
and D. J. Patterson. Determining reproductive fertility in herd bulls.
University of Missouri Extension Guide sheet. MU Guide 2011.
Western Section American Society of Animal Science. Phoenix, AZ. June
22-26, 2003. 54: (Submitted)
Research
Laboratory Research Update. p. 49-50.
Proceedings of the Applied Reproductive Strategies in Beef Cattle Workshop.
Manhattan, KS. September 5-6, 2002. p.34-45.
21, 2002.
53:45-48.
and More. Proceedings of the Range Beef Cow
Symposium XVII. Casper, WY. December 11-13, 2001. p. 182-193.
replacement
heifers and postpartum beef cows. Proceedings from Reproductive Management Tools
and Techniques III. University of
Missouri-Columbia, MO. February 7, 2001.
University of
Missouri-Columbia, Animal Sciences Departmental Report. p. 143-147.
FS921B
