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

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

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

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

Oct 22, 2025

Oct. 24 kicks off 'Plants for the People and the Planet' innovation series

This free seminar series, open to the community at-large, will showcase cutting-edge research and diverse perspectives on how plants can shape a healthier, more sustainable future.

Full Article

Oct 02, 2025

College of Ag Sciences research tour explores connection between food, health

Government and industry stakeholders got a literal taste of the future of agriculture by sampling hydroponically grown greens at one of several presentations during the Penn State College of Agricultural Sciences’ annual Legislative Research Tour, held Sept. 25 at the University Park campus.

Full Article

Aug 22, 2025

Penn State’s 2025 Ag Progress Days a success in showcasing innovation, impact

Penn State’s Ag Progress Days, held Aug. 12-14 at the Russell E. Larson Agricultural Research Center at Rock Springs, was a successful showcase of agricultural innovation, research and technology, according to leaders in the College of Agricultural Sciences, which sponsored the event.

Full Article

Aug 22, 2025

Natural gas-powered tractor to boost ag science research at Penn State

Faculty and students in Penn State’s College of Agricultural Sciences will soon have expanded opportunities for hands-on learning and research with the addition of New Holland’s fully methane-powered tractor.

Full Article

Aug 14, 2025

Northern fowl mite treatment tested at Penn State receives FDA approval

A new way to treat poultry for fowl mites was approved by the U.S. Food and Drug Administration (FDA) in July, thanks in part to a team of researchers in Penn State’s College of Agricultural Sciences.

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Jul 30, 2025

Ag Progress Days displays showcase advanced technology, animal health, invasives

A new initiative aimed at developing emerging and advanced technologies to enhance food production, agricultural ecosystems and natural resources will be one of the focal points of the College of Agricultural Sciences Exhibits Building at Penn State’s 2025 Ag Progress Days, Aug. 12-14.

Full Article

Jul 28, 2025

College of Ag Sciences names first cohort of Land Grant Research Impact Fellows

Penn State’s College of Agricultural Sciences has launched the Land Grant Research Impact Fellows program. This new initiative recognizes and supports faculty whose research addresses pressing challenges in Pennsylvania and beyond.

Full Article

Jul 15, 2025

Optical tweezers help elevate single-molecule research at Penn State

The instrument, supported by a new NIH infrastructure grant, uses laser light to ‘tweeze’ tiny objects like DNA molecules and proteins.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.

Full Article

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.  

Full Article

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

Full Article

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

Full Article

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.

Full Article

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.

Full Article