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Education
PhD--1998, Animal Physiology, Virginia Polytechnic Institute and State
University
MS--1994, Dairy Science, Animal Physiology, Virginia Polytechnic
Institute and State University
BS--1992, Dairy Science, Delaware Valley College of Agriculture and Life
Sciences
Professional
Experience
2006-present: Associate Professor, Dairy Management, Animal and
Veterinary Science, University of Idaho
2000-2006: Assistant Professor, Dairy Management, Animal and Veterinary
Science, University of Idaho
1998-1999: Post Doctoral Fellow, Department of Biomedical Science,
College of Veterinary Medicine, Virginia Polytechnic Institute and State
University
1992-1998: Graduate Research Assistant, Department of Dairy Science,
Virginia Polytechnic Institute and State University
1993-1999: Laboratory Instructor and Teaching Assistant, Department of
Dairy Science, Virginia Polytechnic Institute and State University
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Research
Program
Reproductive efficiency is an important contributor to dairy farm
profitability. Unfortunately, the reproductive performance of dairy
cattle has declined steadily over the last few decades, as evidenced by
decreased estrous detection rates, decreased conception rates, and
increased number of services per conception. In my research program I
emphasize applied research that has a direct impact on reproductive
efficiency and management of dairy cows. My research is in the area of
applied cattle reproduction with an emphasis on fertility, and
management. The focus of my research is to develop a systematic breeding
program for dairy cattle to increase fertility rates and improve
reproductive and economic advantages of artificial insemination (AI) on
dairy farms. Using exogenous reproductive hormones (gonadotropin-releasing
hormone, prostaglandin F2a,, estradiol-17b, progesterone), we attempt to
develop new systematic breeding program (or improve upon the existing
breeding program) to provide an organized and efficient approach to
administering artificial insemination and improving reproductive
efficiency in cattle through increasing heat detection efficiency and
enhancing conception rate. Other areas of research include:
• Examining the role of environment, management, and diseases on cattle
reproduction
• Interaction between nutrition and reproduction
• Enhancing conception rate by reducing early embryonic loss
In continuing our research efforts on reproductive efficiency and
management, I extensively collaborate with University of Idaho dairy
extension specialists, Dr. Joe Dalton and theriogenologist Dr. Ricardo
Chebel. Our research program is based on applied research addressing the
existing issues on farms and those that have direct implications on
practical reproductive management.
Amin
Ahmadzadeh
2006 UI
Excellence in Teaching Award
Amin Ahmadzadeh, associate professor of animal and veterinary science,
came to the University of Idaho in 2000. Ahmadzadeh has been a main
contributor to the resurgence of the dairy science program at the
University of Idaho. He has successfully secured grants supporting
research related to the dairy industry. Ahmadzadeh also helped
re-establish the dairy judging team after its five-decade absence. He
coaches the Dairy
Challenge Team, the capstone of a dairy
management degree, and serves as adviser to the University’s Dairy Club.
Publications
Ahmadzadeh, A.,
F. Frago, B. Shafii, J.C. Dalton, W.J. Price, M. A. McGuire. 2009.
Effect of clinical mastitis and other diseases on reproductive
performance of Holstein cows. Anim. Reprod. Sci. 112:273-282.
Stevenson, J. L., J. C. Dalton, J. E. P. Santos, R. Sartori,
A. Ahmadzadeh,
and R. C. Chebel.
2008.
Effect
of Synchronization Protocols on Follicular Development and Estradiol and
Progesterone Concentrations of Dairy Heifers. J. Dairy Sci. 91:
3045-3056.
Ahmadzadeh, A.,
R. Manzo, C. B. Sellars, and J. C. Dalton. 2007. The Efficacy of a
Reduced Dose of Gonadotropin Releasing Hormone on the Incidence and Time
of Ovulation in Holstein Cows. J. Anim. Vet. Adv.6:1328-133.
Howard, J. M., R. Manzo, F. Frago, D. G. Falk, J. B. Glaze, Jr, J. C.
Dalton, and A. Ahmadzadeh. 2007. Estradiol Cypionate did not
Affect Pregnancy Rates of Beef Cattle Synchronized with a Modified Timed
Artificial Insemination Protocol. Prof. Anim. Sci.23:509-51.
Frago,
F, R. Manzo, J. C. Dalton, M. A. McGuire, and
A. Ahmadzadeh.
2007. Naloxone increases serum calcium concentrations after parturition
in multiparous Holstein cattle. Prof. Anim. Sci. .23:70.
Ahmadzadeh, A.
M. A. Barnes, F. C. Gwazdauskas, and R. M Akers. 2006. Effect of
dopamine antagonist on serum cortisol and prolactin secretion in
lactating Holstein cows. J. Dairy Sci.89:2051-2055
Sellars C. B., J. C. Dalton, R. Manzo, J. Day, and A. Ahmadzadeh.
2006. Time and Incidence of Ovulation and Conception Rates after
Incorporating Estradiol Cypionate into a Timed AI Protocol. J. Dairy
Sci. 89: 620-626.
Howard, J, M., R. Manzo, J. C. Dalton, F. Frago, and A. Ahmadzadeh.
2006. Conception rates and serum progesterone concentration in dairy
cattle administered gonadotropin releasing hormone five days after
artificial insemination. Anim. Reprod. Sci. 96:224-233
Dalton, J. C., R. Manzo, A. Ahmadzadeh, B. Shafii, W. J. Price,
and J. M. DeJarnette. 2005. Conception rates following estrous detection
and timed AI in dairy cows synchronized using GnRH and PGF2α.
J. Dairy Sci. 88: 4313-4316.
Dalton, J.C., A. Ahmadzadeh, B. Shafii, W.J. Price, and J.M.
DeJarnette. 2004. Effect of simultaneous thawing of multiple 0.5
ml-straws of semen and sequence of insemination on conception rate in
dairy cattle J. Dairy Sci. 87:972-975.
Carlin, S.K., A.S. Garst, C.G. Tarraf, T.L. Bailey, M.L. McGilliard, J.R.
Gibbons, A. Ahmadzadeh, and F.C. Gwazdauskas. 1999. Effects of
ultrasound-guided transvaginal follicular aspiration on oocyte recovery
and hormonal profiles before and after GnRH. Theriogenology.
51:1489-1503.
Kendrick, K.W., T.L. Bailey, A.S. Garst, A.W. Pryor, A. Ahmadzadeh,
R.M. Akers, W.E. Eyestone, R.E. Pearson, and F.C. Gwazdauskas. 1999.
Effects of energy balance on hormones ovarian activity and recovered
oocytes in lactating Holstein cows using transvaginal follicular
aspiration. J. Dairy Sci. 82:1731-1741.
Ahmadzadeh,
A.,
M.A. Barnes, and R.E. Pearson. 1998. Effect of naloxone on serum
luteinizing hormone concentration in anovulatory Holstein cows during
the early postpartum period. Domest. Anim. Endocrinol.
15:177-181.
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