Marianna M. Jahnke

MS
Associate Teaching Professor
Embryologist
515-294-9110
2438 Lloyd
Education & Certifications  

MS, Department of Animal Science, Iowa State University, Ames- Iowa, 2005 Specialization:  Animal Reproductive Physiology
BS, Department of Animal Science, Universidade de Alfenas-Minas Gerais- Brazil, 2002

Teaching  

VDPAM 351  Bovine Embryo Transfer and Related Technology
VDPAM 451  Clinical Embryo Transfer
VDPAM 450  Disturbances of Reproduction
VDPAM 471  Theriogenology: Food Animal
VCS 471C    Comparative Reproduction

Research Focus & Interests  

Bovine Reproduction, Embryo Transfer, Embryo Micro- Manipulation such as splitting biopsing and sexing, Assisted Reproductive Technologies and In-Vitro Fertilization

Honors & Awards  

2013 IVMA HealthCare Team Service Award for Leadership That Advances the Care of Animal and People

Leadership/Committees/Council  

ISU Embryo Transfer Co-Service Leader
ISU VDPAM Curriculum Committee Member

Memberships  

American Embryo Transfer Association (AETA)
International Embryo Transfer Society (IETS)
Iowa Veterinary Medical Association (IVMA)

Selected Publications  

Google Scholar Page

Jahnke MM, JK West, and CR Youngs.  2021.  Evaluation of in vivo derived embryos. In (RM Hopper, Ed) Bovine Reproduction, Wiley & Sons, Hoboken NJ (733-748). 2nd edition.

Jahnke MM, CR. Youngs 2021. Superovulation in Cattle In (RM Hopper, Ed) Bovine Reproduction, Wiley & Sons, Hoboken NJ (696-702). 2nd edition.

Wiley C, Jahnke M, Redifer C, Gunn PJ, Dohlman T. Effects of endogenous progesterone during ovarian follicle superstimulation on embryo quality and quantity in beef cows. Theriogenology. 2019; 129: 54-60.

Wiley C, Jahnke M, Gunn P, Dohlman T. Embryo grade, but not stage related to embryonic sex in superovulated beef cows. Clinical Theriogenology. 2019; 11(1): 53-57.

Wiley, C, Jahnke M, Gunn P, Dohlman T. Anatomical location of bovine embryos following superstimulation in beef heifers. Clinical Theriogenology. 2018; 10 (4): 427-433.

Chinchilla-Vargas J, Jahnke M, Dohlman T, Rothschild M, Gunn P. Climatic factors affecting quantity and quality grade of in vivo derived embryos of cattle. Animal Reproduction Science. 2018; 192, 53-60.

Chinchilla-Vargas J, Jahnke M, Dohlman T, Gunn P, Rothschild M Climatic Factors Affecting Quantity and Quality Grade of in vivo Produced Bovine Embryos. Animal Industry Report. 2018; 664 (1), 13.

Vrentas C, Greenlee J, Foster G, West J, Jahnke M, Schmidt M, and Nicholson E.  Effects of a naturally occurring amino acid substitution in bovine PrP: a novel model for inherited prion disease in a natural host species. BMC Research Notes BMC research notes 10 (1), 759 2017, 2016.

Dohlman T, , West J, Phillips P and Gunn P.  Effects of label-dose permethrin administration on reproductive function in superovulated beef heifers.  Theriogenology 85 (9), 1528-1533, 2016.

Phillips P and Jahnke M, 2016.  Embryo Transfer (Techniques, donors and recipients).  Veterinary Clinics of North America: Food Animal Practice 32 (2), 365-385, 2016

T. M. Dohlman, M. M. Jahnke, J. K. West, P. E. Phillips and P. J. Gunn.  Effects of label-dose permethrin administration on reproductive function in superovulated beef heifers. Accepted in Journal of Theriogenology (August 2015)

Jahnke MM, JK West, and CR Youngs.  2014.  Evaluation of in vivo derived embryos. In (RM Hopper, Ed) Bovine Reproduction, Wiley & Sons, Hoboken NJ (733-748).

Youngs CR, C Messerschmidt, JK West, and M Jahnke. 2012. Osmotic reaction of Jersey dairy cattle embryos exposed to various cryoprotective additives.  Reprod. Dom. Anim.  47(Suppl 4):432.

P. Schmitt, M. Jahnke, J. West. 2011 Comparison of Injection Site on embryo production in dairy heifers.  Summer Scholar Poster

Jahnke, M.M. 2005. Strategies to increase the number of FSH-receptive follicles at the initiation of superovulation in cattle.  M.S. Thesis, Iowa State University.

Youngs, C.R., A.M. Powers-Meyer, A.M., M.G. Wonderlich, and M.B. Moreira.  2004.  The effect of cloprostenol or dinoprost, administered at two different sites, on the expression of estrus in postpartum dairy cattle. Proc. 15th Int'l. Cong. Anim. Reprod. (60).

M.L. Pugh, M.B. Moreira, G.R. Gilbert and C.R. Youngs.  2004.  Influence of prostaglandin F2a synthesis inhibitors on pregnancy rate of embryo transfer recipient heifers.  Proc.15th  Int’l Congress on Animal Reproduction (399)