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Eduardo de Souza Ribeiro


Position/Title: Associate Professor
email: eribeiro@uoguelph.ca
Phone: (519) 824-4120 Ext. 56516
Office: ANNU 137

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Meet Eduardo ( 60 second OAC video )

Eduardo de Souza Ribeiro is originally from São Joaquim-SC, a small agricultural town located in southern Brazil. He grew up on a family farm, where his interest in food animals and agriculture began. In 2004, he started his studies in the School of Veterinary Medicine at Santa Catarina State University. During his undergraduate studies, he was actively involved with research in embryology and developed a passion for science and reproductive biology. In 2009, he was accepted into the graduate program of the Department of Animal Sciences at University of Florida. His master’s thesis focused on reproductive physiology and management of lactating dairy cows. Upon completion of his M.Sc. degree in 2011, he started a Ph.D. in Animal Molecular and Cellular Biology at University of Florida, which was completed in 2015. His doctoral dissertation focused on molecular features in the ovary and pregnant uterus associated with fertility in dairy cattle. He joined the Department of Animal Biosciences at the University of Guelph in January 2016 as Assistant Professor in Reproductive Physiology, and was ranked Associate Professor in July 2020. His appointment is divided in research, teaching, and service. 

Academic History

  • Bachelor in Veterinary Medicine, Santa Catarina State University, Brazil (2008)
  • Master of Science in Animal Sciences, University of Florida, USA (2011)
  • Doctor of Philosophy in Animal Molecular and Cellular Biology, University of Florida, USA (2015)

Affiliations and Partnerships

  • American Dairy Science Association
  • Society for the Study of Reproduction
  • Dairy Cattle Reproduction Council
  • Canadian Society of Animal Science

Awards and Honours

  • Journal of Dairy Science Highly‐Cited Award (2019)
  • Sigma Xi Graduate Research Award (2016)
  • Award of Excellence for Graduate Research presented by the Institute of Food and Agricultural Sciences, University of Florida (2015)
  • Richard M. Hoyt Memorial Award presented by the National Milk Producers Federation and American Dairy Science Association (2014)

Research Impact

Using a holistic approach that combines state-of-the-art basic science with applied research, Eduardo’s research examines the problem of subfertility in cattle at all levels of organization, from farm enterprise to cow to tissue to cell to gene. His research has improved our understanding of the molecular control of embryonic development in the cow, pinpointed postpartum diseases and anovulation as major causes of subfertility plaguing dairy cattle throughout the world, established target supplementation of somatotropin as a strategy to improve embryonic survival in lactating dairy cows, and tested novel reproductive programs for dairy herds. Current research projects in Eduardo’s laboratory continue to investigate key events in dairy cattle reproductive biology and postpartum health that ultimately contribute for the success of transition management, production efficiency, pregnancy establishment and survival to term. Research findings are then translated to the development and application of management strategies in commercial herds aiming to optimize sustainability of dairy production.

Current Research Interests

Role of endometrial lipids in elongation and survival of the preimplantation conceptus
Elongation of the preimplantation conceptus is a prerequisite for successful pregnancy in cattle and depends on histotroph secretion by the endometrium. The uterine histotroph is rich in lipids and significant changes in gene expression of conceptus cells during elongation are likely coordinated by these lipids through activation of transcription factors and cell signalling. This project aims to investigate the profile of lipids in the endometrium at the time of elongation and its importance for histotroph composition and conceptus development. Results are expected to contribute to our understanding of preimplantation conceptus development and survival in lactating dairy cows, and to allow the development of nutraceutical strategies to improve reproductive efficiency in cattle.

Short- and long-term consequences of inflammation on nutrient partition, lactation and reproductive performance in dairy cattle
Inflammation is prevalent in dairy cows during the transition from pregnancy to lactation, and is caused mainly by metabolic disorders and microorganism infections. This project aims to understand how nutrient partition is altered by inflammation and to investigate the short- and long-term consequences of inflammation for the biology of lactation, ovary and uterus. The results are expected to help us understand how inflammation reduces lactation and reproductive performance, and to contribute to the development of strategies to minimize these losses.  

Research Team

Current members

  • Bruna Mion - PhD student (September 2018 - current)
  • Lori Ogilvie - MSc student (May 2019 - current)
  • Guilherme Madureira - PhD student (September 2020 - current)
  • Bryn Van Winters - MSc student (September 2020 - current)

Past members

  • Kristina King - MSc student (September 2018 - December 2019). Current position: Veterinary Assistant at Livingston Animal Hospital. 
  • José Felipe Warmling Sprícigo - Postdoctoral fellow (November 2017 - July 2019). Current position: Assistant Professor at Federal University of Goias - Brazil. 
  • Elvis Ticiani - PhD visiting student (September 2017 - August 2018). Current position: Postdoctoral fellow at Michigan State University.
  • Murilo Carvalho - MSc student (September 2016 - August 2018). Current position: Education & Extension Specialist, Holstein Canada.

Prospective Graduate Student Information

Students in Eduardo’s research group are expected to work as a team and to take advantage of the wide range of research topics in his program. Students have the opportunity to learn and to gain experience in many aspects of reproductive biology and animal production, ranging from molecular work in the laboratory to applied research in commercial herds and interaction with producers and industry partners. Eduardo maintains an environment of open communication and constant mentorship with his students. He plays an active role during early stages of training and expects greater independence and critical thinking during the progression of the program. The academic training emphasizes learning of scientific methods and statistics, and students are expected to publish their research findings in scientific journals and to present the results at scientific meetings and extension events.

Featured Publications

  • Carvalho et al. (2020) Associations between maternal characteristics and health, survival, and performance of dairy heifers from birth up to first lactation. J. Dairy Sci. 103:823-839.
  • Carvalho et al. (2019) Long-term impact of clinical disease postpartum on milk production, reproduction, and culling of dairy cows. J. Dairy Sci. 102:10790-10798.
  • Abdollahi-Arpanahi et al. (2019) Association between lipid-related genes implicated in conceptus elongation and female fertility traits in dairy cattle. J. Dairy Sci. 102:10020-10029.
  • Ribeiro et al. (2018) Physiological and cellular requirements for successful elongation of the preimplantation conceptus and the implications for fertility in lactating dairy cows. Anim. Reprod. 15:765-783.
  • Ribeiro (2018) Symposium review: Lipids as regulators of conceptus development: Implications for metabolic regulation of reproduction in dairy cattle. J. Dairy Sci. 101:3630-3641.
  • Ribeiro and Carvalho (2017) Impact and mechanisms of inflammatory diseases on embryonic development and fertility in cattle. Anim. Reprod. 14:589-600.
  • Ribeiro et al. (2016) Role of lipids on elongation of the preimplantation conceptus in ruminants. Reproduction 152:R115-126.
  • Ribeiro et al. (2016) Biology of preimplantation conceptus at the onset of elongation in dairy cows. Biol. Reprod. 94(4):97, 1-18.
  • Ribeiro et al. (2016) Carryover impact of postpartum inflammatory diseases on developmental biology and fertility in dairy cows. J. Dairy Sci. 99:2201-2220.
  • Ribeiro et al. (2016) Conceptus development and transcriptome at preimplantation stages in lactating dairy cows of distinct genetic groups and estrous cyclicity statuses. J. Dairy Sci. 99:4761-4777.

For a full list of Eduardo’s publications, please visit his Google Scholar page.