| Peter J. Hansen | |
| Birth Date: | November 23, 1956 |
| Birth Place: | Oak Park, Illinois |
| Nationality: | American |
| Field: | Animal Science, Reproductive Physiology, Developmental Biology, Environmental Physiology |
| Alma Mater: | University of Wisconsin - Madison University of Illinois at Urbana–Champaign[1] |
| Doctoral Advisor: | Edward R. Hauser |
Peter J. Hansen is an American animal scientist and physiologist who serves as distinguished professor and L.E. "Red" Professor of Animal Sciences in the Department of Animal Sciences at University of Florida[2]
Hansen's interest in livestock species started early in life while staying with relatives in County Wexford Ireland He first did research while an undergraduate in the Dept. of Dairy Science at the University of Illinois under the tutelage of Charles E. Graves. His doctoral research focused on regulation of reproduction by photoperiod in cattle and mice. Postdoctoral work with Roberts and Bazer kindled a love for understanding the establishment and maintenance of pregnancy, which subsequently became a career-long research interest. Among the most notable achievements as a faculty member at Florida has been identifying embryokines (see embryokine) that regulate development of the preimplantation embryo, demonstrating sex-dependent developmental programming during the preimplantation period, understanding how elevated temperature compromises reproduction, development of embryo transfer to increase pregnancy rate in heat-stressed cows, demonstration of the importance of the slick mutation in the prolactin receptor gene for increasing thermotolerance of cattle, and characterization of mechanisms for inhibition of uterine immune function by progesterone.
Hansen was the recipient of the highest awards given by the American Society of Reproductive Immunology, American Dairy Science Association and the American Society of Animal Science.[3] He is a Fellow of the American Association for the Advancement of Science (2007),[4] [5] American Dairy Science Association (2009),[6] American Society of Animal Science (2018) [7] and the Society for the Study of Reproduction (2021) [8]
Seasonal modulation of puberty and the postpartum anestrus in cattle: A review. Hansen PJ . Livestock Production Science . June 1985 . 12 . 4 . 309–327 . 10.1016/0301-6226(85)90131-9.
Physiological and cellular adaptations of zebu cattle to thermal stress. Hansen PJ . Animal Reproduction Science . July 2004 . 82-83 . 349–369 . 10.1016/j.anireprosci.2004.04.011 . 15271465.
Effects of heat stress on mammalian reproduction . Hansen PJ . Philosophical Transactions of the Royal Society B: Biological Sciences. November 2009 . 364 . 1534 . 3341–2250 . 19833646 . 10.1098/rstb.2009.0131. 2781849 .
Sex and the preimplantation embryo: implications of sexual dimorphism in the preimplantation period for maternal programming of embryonic development . Hansen PJ, Dobbs, KB, Denicol, AC, Siqueira, LGB . Cell and Tissue Research . January 2016 . 363 . 1 . 237–247 . 26391275 . 10.1007/s00441-015-2287-4. 4703572 .
Regulation of present and future development by maternal regulatory signals acting on the embryo during the morula to blastocyst transition - insights from the cow . Hansen PJ, Tribulo P . Biology of Reproduction . September 2019 . 101 . 3 . 526–537 . 31220231 . 10.1093/biolre/ioz030. 8127039 .
Review: Some challenges and unrealized opportunities toward widespread use of the in vitro-produced embryo in cattle production . Hansen PJ . Animal . May 2023 . 17 . Suppl 1 . 100745 . 37567654 . 10.1016/j.animal.2023.100745. 260783558 . free . 10659117 . 2023Anim...1700745H .
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