Troy Ott

Dean of the College of Agricultural Sciences; C. Lee Rumberger and Family Chair in Agricultural Sciences; Professor of Reproductive Physiology

Troy Ott

Research Summary

Reproductive immunology and the physiology of early pregnancy.

Huck Graduate Students

Huck Affiliations

Links

Most Recent Publications

Pregnancy Establishment and Diagnosis in Livestock

Troy L. Ott, Ahmed Tibary, Muhammad Waqas, Rodney Geisert, Julio Giordano, 2025, Annual Review of Animal Biosciences on p. 211-232

Effects of parity and early pregnancy on peripheral blood leukocytes in dairy cattle

M. I. da Silva, N. Oli, F. Gambonini, T. Ott, 2024, Journal of Dairy Science on p. 11728-11743

Dietary supplementation with rumen-protected capsicum during the transition period improves the metabolic status of dairy cows

J Oh, M Harper, A Melgar, S Räisänen, X Chen, K Nedelkov, M Fetter, T. Ott, E Wall, Alexander Hristov, 2021, Journal of Dairy Science on p. 11609-11620

An interview with Dr Fuller Warren Bazer

Troy L. Ott, 2021, Biology of Reproduction on p. 248-251

Short communication: Postpartum plasma amino acid concentration in primi- and multiparous Holstein cows

M.E. Fetter, D.M. Cunningham, F. Gambonini, S.E. Räisänen, T. L. Ott, Alexander Hristov, 2021, Animal Feed Science and Technology on p. 115101

An interview with Dr Fuller Warren Bazer

Troy Ott, 2020, Biology of Reproduction on p. 5 pages

Immunological detection of pregnancy: Evidence for systemic immune modulation during early pregnancy in ruminants

Troy L. Ott, 2020, Theriogenology on p. 498-503

Author Correction: Evolution of placental invasion and cancer metastasis are causally linked (Nature Ecology & Evolution, (2019), 3, 12, (1743-1753), 10.1038/s41559-019-1046-4)

Kshitiz, Junaid Afzal, Jamie D. Maziarz, Archer Hamidzadeh, Cong Liang, Eric M. Erkenbrack, Hong Nam Kim, Jan Dirk Haeger, Christiane Pfarrer, Thomas Hoang, Troy Ott, Thomas Spencer, Mihaela Pavličev, Douglas F. Antczak, Andre Levchenko, Günter P. Wagner, 2020, Nature Ecology and Evolution on p. 280

Methods for improved reproductive management of ruminant ungulates

Troy Ott, Roy Hammerstedt, 2020,

Effects of 3-nitrooxypropanol on rumen fermentation, lactational performance, and resumption of ovarian cyclicity in dairy cows

A Melgar, M Harper, J Oh, F Giallongo, M Young, T. L. Ott, S Duval, A. N. Hristov, 2020, Journal of Dairy Science on p. 410-432

Most-Cited Papers

Effects of 3-nitrooxypropanol on rumen fermentation, lactational performance, and resumption of ovarian cyclicity in dairy cows

A Melgar, M Harper, J Oh, F Giallongo, M Young, T. L. Ott, S Duval, A. N. Hristov, 2020, Journal of Dairy Science on p. 410-432

Climate change effects on livestock in the Northeast US and strategies for adaptation

A. N. Hristov, A. T. Degaetano, C. A. Rotz, E. Hoberg, R. H. Skinner, T. Felix, H. Li, P. H. Patterson, G. Roth, M. Hall, T. L. Ott, L. H. Baumgard, W. Staniar, R. M. Hulet, C. J. Dell, A. F. Brito, D. Y. Hollinger, 2018, Climatic Change on p. 33-45

Evolution of placental invasion and cancer metastasis are causally linked

Kshitiz, Junaid Afzal, Jamie D. Maziarz, Archer Hamidzadeh, Cong Liang, Eric M. Erkenbrack, Hong Nam, Jan Dirk Haeger, Christiane Pfarrer, Thomas Hoang, Troy Ott, Thomas Spencer, Mihaela Pavličev, Douglas F. Antczak, Andre Levchenko, Günter P. Wagner, 2019, Nature Ecology and Evolution on p. 1743-1753

Symposium review: Immunological detection of the bovine conceptus during early pregnancy

Troy L. Ott, 2019, Journal of Dairy Science on p. 3766-3777

Embryo mortality around the period of maintenance of the corpus luteum causes alterations to the ovarian function of lactating dairy cows1

Robert Wijma, Matias L. Stangaferro, Manasi M. Kamat, Sreelakshmi Vasudevan, Troy L. Ott, Julio O. Giordano, 2016, Biology of Reproduction

Immunological detection of pregnancy: Evidence for systemic immune modulation during early pregnancy in ruminants

Troy L. Ott, 2020, Theriogenology on p. 498-503

Mechanical shear controls bacterial penetration in mucus

Nuris Figueroa-Morales, Leonardo Dominguez-Rubio, Troy L. Ott, Igor S. Aranson, 2019, Scientific Reports

Discrepancies and Uncertainties in Bottom-up Gridded Inventories of Livestock Methane Emissions for the Contiguous United States

Robert Meinen, Alexander N. Hristov, A Hristov, M Harper, R Meinen, M Harper, R Day, J Lopes, Troy Ott, A Venkatesh, C Randles, 2017, Environmental Science & Technology on p. 13668-13677

The transcriptomic evolution of mammalian pregnancy:gene expression innovations in endometrial stromal fibroblasts

Koryu Kin, Jamie Maziarz, Arun R. Chavan, Manasi Kamat, Sreelakshmi Vasudevan, Alyssa Birt, Deena Emera, Vincent J. Lynch, Troy L. Ott, Mihaela Pavlicev, Günter P. Wagner, 2016, Genome Biology and Evolution on p. 2459-2473

Changes in myeloid lineage cells in the uterus and peripheral blood of dairy heifers during early pregnancy

Manasi M. Kamat, Sreelakshmi Vasudevan, Samar A. Maalouf, David H. Townson, Joy L. Pate, Troy L. Ott, 2016, Biology of Reproduction on p. 68

News Articles Featuring Troy Ott

May 30, 2025

Penn State’s Youth Food Lab attends UN Science, Technology, Innovation forum

Penn State’s College of Agricultural Sciences was represented on the global stage as faculty and students participated in the United Nations’ 10th Multi-stakeholder Forum on Science, Technology and Innovation for the Sustainable Development Goals, held at U.N. headquarters in New York City earlier this month.

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May 29, 2025

Biology professor, Huck associate operations director to retire

After a decade of service to the Huck Institutes of the Life Sciences and a distinguished academic career spanning four decades, James Marden, professor of biology and associate director of operations, will retire from Penn State at the end of June.

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May 13, 2025

Learn about kinship care through Dean Troy Ott’s personal journey

An upcoming session will offer insight into kinship care through the lived experience of someone raised in a kinship family: Troy Ott, dean of Penn State’s College of Agricultural Sciences.

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Mar 25, 2025

Center for Plant Excellence launched by PSU, Shapiro admin

Agriculture secretary Russell Redding and Pennsylvania State University college of agricultural sciences dean Dr. Troy Ott launched the new Center for Plant Excellence, an initiative aimed at advancing research, innovation, and business growth in Pennsylvania’s diverse, plant-based ag sector.

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Mar 15, 2025

Ag Sciences research institute SAFES funds projects addressing critical issues

Penn State’s College of Agricultural Sciences, through its Institute for Sustainable Agricultural, Food and Environmental Science, known as SAFES, announced funding awards to accelerate the advancement of its Critical Issues Initiatives. These initiatives serve as the college’s impact hubs, addressing urgent and high-impact challenges through targeted efforts and innovative projects.

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Feb 21, 2025

Penn State to establish Animal Diagnostic Lab-West

With $6 million in state funding, the new facility, to be located at Penn State Beaver, will enhance animal health and support for animal agriculture in western Pennsylvania.

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Jan 24, 2025

López-Uribe awarded presidential honor for early career scientists

Margarita López-Uribe, the Lorenzo L. Langstroth Early Career Professor of Entomology in the College of Agricultural Sciences, was awarded the Presidential Early Career Award for Scientists and Engineers by President Biden earlier this month.

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Dec 10, 2024

College of Ag Sciences celebrates faculty, staff achievements in research

Penn State’s College of Agricultural Sciences celebrated another year of outstanding success and accomplishments in research during the 2024 Research Awards Ceremony, held Nov. 19 at the Hintz Family Alumni Center on the University Park campus.

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Oct 18, 2024

Penn State named site for World Food Forum Youth Food Lab

Penn State’s College of Agricultural Sciences has been selected to host a prestigious World Food Forum Youth Food Lab, a key initiative of the Food and Agriculture Organization of the United Nations (FAO) to address global food security and climate change.

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Jun 07, 2024

Troy Ott Named Dean Of Penn State College Of Agricultural Sciences

Troy Ott has been named dean of the Penn State College of Agricultural Sciences, effective July 1, the university announced Tuesday. Ott entered the role while working as the interim director of the Huck Institutes of the Life Sciences, a role that has been filled by Patrick Drew.

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Jun 05, 2024

Ott Named Penn State Ag Sciences Dean

A Penn State faculty member of nearly two decades will be the new dean of the university’s College of Agricultural Sciences. Troy Ott, who currently serves as interim director of Penn State’s Huck Institutes of the Life Sciences, will step into the role on July 1, the university announced on Tuesday. He succeeds Rick Roush, who retired in September after nine years as dean, and Laszlo Kulcsar, professor of rural sociology and demography, who served as interim dean of the college for the last nine months.

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Jun 05, 2024

Troy Ott named dean of Penn State’s College of Agricultural Sciences 

Troy Ott, interim director of the Huck Institutes of the Life Sciences, has been named dean of the Penn State College of Agricultural Sciences, effective July 1.  

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Mar 27, 2024

Andrew Read named senior vice president for research

 Andrew Read, the former director of the Huck Institutes of the Life Sciences and a faculty member in the departments of biology and entomology, has been selected to serve as Penn State’s senior vice president for research.

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Jan 25, 2024

Penn State, QIAGEN announce strategic partnership to advance microbiome sciences

Penn State, known for innovations in interdisciplinary research, and QIAGEN LLC, a leader in sample-to-insight solutions, have signed a memorandum of understanding (MOU) to foster advancements in microbiome sciences

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Dec 07, 2023

USDA grant supports reproductive microbiome training program

The USDA NIFA has awarded Penn State a five-year, US$238,500 grant to establish a graduate training pipeline in reproductive microbiome research

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Dec 06, 2023

New USDA grant to support graduate reproductive microbiome training program

The USDA NIFA has awarded Penn State a five-year, $238,500 grant to establish a graduate training pipeline in reproductive microbiome research.

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Jul 26, 2023

HGSAC looks to raise the bar with election of new co-chairs

HGSAC students elected Avery Sicher and Jessica Walnut to serve as the graduate co-advisors to the Huck Institutes for the upcoming 2023-24 academic year.

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Jul 07, 2023

Slavković named Huck Chair in Data Privacy and Confidentiality

Aleksandra "Seša" Slavković, professor of statistics and public health sciences and associate dean for graduate education in the Eberly College of Science at Penn State, has been appointed Dorothy Foehr Huck and J. Lloyd Huck Chair in Data Privacy and Confidentiality.

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Jun 12, 2023

Troy Ott named acting director of the Huck Institutes of the Life Sciences

Troy Ott , professor of reproductive physiology and associate director of the Huck Institutes of the Life Sciences, has been selected to serve as acting director of the Huck Institutes during the appointment of Andrew Read as interim senior vice president of research at Penn State. Ott’s position will be effective July 1.

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Jun 06, 2023

Andrew Read named interim senior vice president for research

Andrew Read, director of the Huck Institutes of the Life Sciences, has been selected to serve as interim senior vice president for research at Penn State during the two-year appointment of Lora Weiss as director of the U.S. Department of Commerce’s CHIPS Research and Development Office. Read’s position will be effective July 1.

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Aug 25, 2021

HGSAC Chair Thanked as Term Wraps Up

Outgoing Graduate Adviser to the Huck Institutes Maria Isabel da Silva was recognized by the Executive Board for her leadership during the COVID-hit 2020-21 Academic Year.

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Apr 12, 2021

Physiology Graduate Student Wins Top Prize at Graduate Exhibition

Huck Graduate Student Advisory Committee President Isabel da Silva was given top honors in the Health & Life Sciences category of the 2021 Graduate School Exhibition

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Jul 24, 2020

HGSAC Co-Chairs Recognized for Leadership During Challenging Academic Year

A pair of outgoing student leaders were lauded for their efforts to provide career resources and improvement opportunities to their fellow graduate students even as the University cancelled in-person events.

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Jun 07, 2019

Bruce Chen Recognized for Outstanding Student Leadership

The PhD candidate in genetics was lauded for his time as HGSAC chair, in which he worked to help his fellow graduate students identify a number of possible future career paths.

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Feb 13, 2019

Troy Ott to discuss "the improbable series of events that led to your birth"

At this month’s "Science on Tap" event, Huck Associate Director and professor of reproductive biology Troy Ott will discuss viviparity — the development of an embryo inside the body leading to the birth of a live offspring. Viviparity is thought to have evolved from egg-laying animals. Ott's talk will focus on one of the enigmas of live birth that relates to the mother’s immune system.

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