University of Wisconsin–Madison
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Principal Investigator

Francisco Peñagaricano

Francisco Peñagaricano

Judge John J. Crown Chair in Dairy Genetics
Department of Animal & Dairy Sciences · University of Wisconsin-Madison

Francisco is originally from Uruguay, where he earned his B.S. degrees in Biology and Biochemistry (2005) and M.S. in Animal Science (2010) from Universidad de la República. He earned his M.S. in Statistics (2014) and Ph.D. in Animal Science (2014) at UW-Madison. From 2015–2020, he was faculty at the University of Florida. His research focuses on the development and application of statistical and computational methods to dissect the genetic architecture of economically relevant traits in livestock, combining large phenotypic datasets with high-throughput genomic technologies.

Teaching: AN SCI 366 – Concepts in Genomics (3 credits, Fall) · AN SCI 875 – Design and Analysis of Biological Studies (4 credits)

Editorial Service: Editorial Board, Journal of Dairy Science · Associate Editor, Animal · Frontiers in Genetics · BMC Genomics

Postdoctoral Researchers

Gabriel Zayas

Gabriel Zayas

Postdoctoral Researcher
Ph.D. University of Florida (2025)
B.S. University of Florida
Research: Quantitative Genetics, Genomic Prediction, Thermotolerance
Joined January 2026
Afees Abiola Ajasa

Afees Abiola Ajasa

Postdoctoral Researcher
Ph.D. Nofima / NMBU, Norway (2024)
M.Sc. University of Ibadan, Nigeria
M.Sc. University of Debrecen, Hungary
B.Agric. Federal University of Agriculture, Abeokuta, Nigeria
Research: Quantitative Genetics, Statistical Genomics
Joined October 2025
Bárbara Mazetti Nascimento

Bárbara Mazetti Nascimento

Postdoctoral Researcher
Ph.D. Federal University of Paraná, Brazil
Research: Dairy Cattle Genomics, Feed Efficiency, Behavioral Traits

Graduate Students

Agustín Chasco

Agustín Chasco

Ph.D. Student
M.S. Animal & Dairy Sciences, UW-Madison
B.S. National University of Río Cuarto, Argentina
Intern, CDCB
Intern, ABS Global (2025)
Research: Dairy Cattle Genomics
Negin Sheybani

Negin Sheybani

Ph.D. Candidate
M.S. University of Tehran, Iran
B.S. University of Tehran, Iran
Intern, Zoetis (Summer 2025)
Research: Computational Biology & Bioinformatics
Expected Graduation: Spring 2027
Ümit Bilginer

Ümit Bilginer

Ph.D. Student
M.S. Animal Science, Akdeniz University, Türkiye
B.S. Animal Science, Akdeniz University, Türkiye
Erasmus Exchange, Aarhus University, Denmark (2023)
University Researcher, Michigan State University, USA (2024–2025)
Genetics Intern, Cobb-Vantress Inc., USA (Summer 2025)
Research Intern, UW-Madison (Sep-Dec 2025)
Ph.D. Student since January 2026

Research Staff

Dérick Cantarelli Rösler

Dérick Cantarelli Rösler

Research Specialist
M.S. Animal Production, Federal University of Pelotas (Brazil)
Research: Data Collection, GreenFeed Phenotyping
Emily Tabor

Emily Tabor

Research Specialist
M.S. Animal & Dairy Sciences, University of Wisconsin-Madison
B.S. Biology & Sociology, Union College (2021)
Research: Data Collection, Phenotyping
André Aguiar Zambon

André Aguiar Zambon

Research Specialist
M.S. Animal & Dairy Sciences, University of Wisconsin-Madison
Brazil
Research: Data Collection, Phenotyping

Former Members

Guillermo Martinez Boggio
Guillermo Martinez Boggio
Postdoc (2023–2025)
Assistant Professor
UC Davis
Ligia Cavani
Ligia Cavani
Postdoc (2020–2025)
C-Lock Inc.
Fiona Louise Guinan
Fiona Louise Guinan
Ph.D. Student (co-advised w/ Weigel)
Livestock Data Analytics Expert
CDCB
Bruno Manuel D'Ambrosio Zeballos
Bruno Manuel D'Ambrosio Zeballos
Research Staff (2024–2025)
Uruguay
Lihe Liu
Lihe Liu
Graduate Student (2018–2023)
Postdoc, Sanford Burnham Prebys
Larissa Novo
Larissa Novo
Graduate Student (2020–2023)
Genetic Research Analyst
Angus Genetics Inc.
Hendyel Pacheco
Hendyel Pacheco
Ph.D. Student (2018–2023)
Zoetis
Anil Sigdel
Anil Sigdel
Ph.D. Student (2016–2022)
Postdoc, University of Wisconsin-Madison
Rostam Abdollahi-Arpanahi
Rostam Abdollahi-Arpanahi
Postdoc (2018–2020)
Statistical Geneticist, Aviagen
Juan Pablo Nani
Juan Pablo Nani
Postdoc (2018–2019)
Geneticist, ABS Global
Fernanda Marcondes de Rezende
Fernanda Marcondes de Rezende
Postdoc (2017–2020)
Assistant Professor
University of Florida
Josué Chinchilla-Vargas
Josué Chinchilla-Vargas
Postdoc (2021)
Genetic Services Specialist, PIC
Rocío Amorín de Hegedüs
Rocío Amorín de Hegedüs
Graduate Student (2017–2019)
Senior Bioinformatician
LGC

Past Visiting Scholars

Federica MarínFederica Marín
U. de la República, Uruguay (2025)
Bharti DeshmukhBharti Deshmukh
GADVASU, India (2023)
Rodrigo VivianRodrigo Vivian
U. de la República, Uruguay (2023)
Carolina Durán
UNAM, México (2022)
María AndréMaría André
U. de la República, Uruguay (2020)
Brayan D'auriaBrayan D'auria
USP, Brazil (2019–2020)
Laila Talarico DiasLaila Talarico Dias
UFPR, Brazil (2019–2020)
Rodrigo de Almeida TeixeiraRodrigo de Almeida Teixeira
UFPR, Brazil (2019–2020)
Eugenio JaraEugenio Jara
U. de la República, Uruguay (2019)
Gastón RijoGastón Rijo
U. de la República, Uruguay (2019)
Helder LouvandiniHelder Louvandini
USP, Brazil (2018–2019)
Lucía Balestrazzi
U. de la República, Uruguay (2018)
Ligia JimenezLigia Jimenez
UNAL, Colombia (2018)
Martín Bonet
Embriovet, Spain (2017)
Paula Nicolini
U. de la República, Uruguay (2016)
Andrés IriarteAndrés Iriarte
U. de la República, Uruguay (2016)
Ana Ines TrujilloAna Ines Trujillo
U. de la República, Uruguay (2015)