mduarte's picture    

Marcio Duarte

Position/Title: Assistant Professor
Phone: (519) 824-4120 ext. 53660
Office: ANNU152

Google scholar site link
LinkedIn site link

Marcio Duarte was born in Viçosa, a college town located at southeast in Brazil. Marcio comes from Federal University of Viçosa in Brazil where he was a three-time grad in Animal Science. His Masters and Ph.D was focused on Meat Science and Muscle Biology in ruminant animals. During his Ph.D he was a visiting scholar at the Nutrigenomics and Growth Biology Laboratory at Washington State University (2011-2012). After his Ph.D, he joined the Department of Animal Sciences at Federal University of Viçosa as a postdoctoral fellow. Upon completion of his postdoctoral fellowship, Marcio joined the same Department as Assistant Professor, where he stayed for seven years. He joined the Department of Animal Biosciences at University of Guelph in 2021 as Assistant Professor in Meat Science and Muscle Biology. His area of research focuses on skeletal muscle growth and metabolism both pre and postnatally and its overall impact on the quality of meat.

Academic History

  • Ph.D in Animal Science, Federal University of Viçosa (2013)
  • MS in Animal Science, Federal University of Viçosa (2010)
  • BS in Animal Science, Federal University of Viçosa (2008)


  • Canadian Meat Science Association
  • Canadian Society of Animal Science
  • American Society of Animal Science

Current Research Projects

Maternal and neonatal nutrition and skeletal muscle development of the offspring

Duarte's laboratory is currently investigating the impact of gestational and neonatal nutrition on the skeletal muscle development of offspring in meat animals. A key focus of this research involves the examination of how maternal nutrition influences the mechanisms associated with myogenesis and adipogenesis in skeletal muscle, and the potential implications for the animal's performance, carcass deposition, and meat quality. Gaining insight into the intrinsic and extrinsic effects of maternal nutrition during gestation on the trajectory of an animal's life has the potential to enhance nutritional management in the early stages, ultimately leading to improvements in carcass yield and quality.

Use of electrolyte solution during pre-slaughter handling and its effects on the conversion of muscle into meat, and beef quality

The pre-slaughter stress is one of the major issues that can affect the quality of raw meat. A lot of efforts have been made over the decades to develop technologies that may prevent/minimize the effects of stress pre-slaughter and to avoid the occurrence of DFD meat. In this project, we aim to investigate the effects of electrolyte solution administered pre-slaughter on the stress indicators of the animals, the biology of conversion of muscle into meat, and on the quality aspects of beef.

Supplementation of functional amino acids to enhance muscle growth and development

The current body of research exploring the effects of industrial amino acids (AA) and intermediary molecules of AA metabolism on the mechanisms influencing muscle growth and development in beef cattle is rather sparse. Notably, a substantial knowledge gap exists in understanding how these functional molecules can be strategically integrated into beef production practices. In response to this gap, our laboratory is actively engaged in the strategic utilization of functional amino acids, employing a combined approach that merges fundamental and applied science. Our aim is to unravel the intricate biology of muscle growth, discerning its impact on carcass yield, and elucidating potential implications for quality traits.

Research Team

Current Members

Sarah Dean - MS Student in Animal Biosciences

Emily Knapper - MS Student in Animal Biosciences

Luiza Kladt - MS Visiting Scholar

Walmir Silva - Research Assistant

Mingjia Jiang - Undergrad Student

Ziting Li - Undergrad Student


Past members

Dante Valente Junior - PhD Visiting Scholar

Maykelly Gomes - PhD Visiting Scholar


Previous Graduate Students / Research Fellows

Felipe Moura (MS completed - 2018)

Thais Costa (MS completed - 2018)

Dr. Pedro Benedeti (Postdoctoral Fellow: 2017-2018)

Mariana Lopes (MS completed - 2020)

Marta Santos (MS completed - 2020)

Pedro Lourenço (MS Completed - 2022)

Dr. Thais Costa (PhD completed - 2022)

Dr. Thais Costa (Postdoctoral Fellow: 2022-2023)

Julcimara Araujo (MS completed - 2023)

Dr. Marta Santos (PhD Completed - 2024)


Laboratory Award and Honours

  • 2020 - Roullier Innovation Award (2020) - Roullier Group
  • 2023 - Percy Gitelman Award - Canadian Meat Science Association
  • 2023 - Animal Biosciences Research Symposium - Oral Competition (1st Place)
  • 2023 - Canadian Beef Industry Conference - Poster Competition (2nd Place)
  • 2023 - ASAS Young Scholar Award

Selected Recent Publications 

1. **Valente Junior, D.T.; et al. Do carcass traits influence consumer perception of pork eating quality? Meat Science, 208, 109381, 2024.

2. **Santos, M.M.; et al. Nutrient supplementation of beef female calves at pre-weaning enhances the commitment of fibro-adipogenic progenitor cells to preadipocytesMeat Science, 204, 109286, 2023.

3. Bohrer, B.; et al. A comparison of carcass characteristics, carcass cutting yields, and meat quality of barrows and giltsTranslational Journal of Animal Science, 7(1), txad079, 2023.

4. **Costa, T.C.; et al. Ruminal undegradable protein enriched diet during late gestation of beef cows affects maternal metabolism and offspring's skeletal muscle developmentAnimal Feed Science and Technology, 291, 115400, 2022.

5. **Carvalho, E.B.; et al. Short communication: Transcriptome profile in the skeletal muscle of cattle progeny as a function of maternal protein supplementation during mid-gestationLivestock Science, 104995, 2022.

6. **Santos M.M.; et al. Prenatal origins of productivity and quality of beefBrazilian Journal of Animal Science, e20220061, 2022.

7. Soares, M.H.; et al. Effects of feeding ractopamine hydrochloride with or without supplemental betaine on live perfomance, carcass and meat quality traits, and gene expression of finishing pigsMeat Science, 108851, 2022.

8. **Costa, T.C.; et al. Fetal programming in ruminant animals: understanding the skeletal muscle development to improve meat quality. Animal Frontiers, 11(6), p. 66-73, 2021.

9. **Costa, T.C.; et al. Transcriptome changes in newborn goats' skeletal muscle as a result of maternal feed restriction at different stages of gestationLivestock Science, v. 248, p. 104503, 2021.

10. **Fontes, M.M.S.; et al. Intramuscular collagen characteristics and expression of related genes in skeletal muscle of cull cows receiving a high-energy dietMeat Science, v. 177, p. 108495, 2021.

(** Students under my guidance)

For a full list of publication: Marcio Duarte - Google Scholar