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Marcio Duarte

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

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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 nutrition and skeletal muscle development of the offspring

Marcio has been investigating the effects of maternal nutrition during gestation os skeletal muscle development of the offspring in meat animals. His research has focusing on investigating how maternal nutrition affects the mechanisms underlying myogenesis and adipogenesis of skeletal muscle and how it may impact animal's performance, carcass deposition and meat quality traits. Learning how about the intrinsic and extrinsic effects of maternal nutrition during gestation on the trajectory of animal's life can lead to improvements on nutritional management at early stages of life that will improve animal's 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.

Award and Honours

  • Roullier Innovation Award (2020)

Selected Recent Publications

1. 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.

2. Costa T.C.; et al. Impact of maternal feed restriction at different stages of gestation on the proteomic profile of the newborn skeletal muscleAnimals, v. 12(8), 1011, 2022.

3. 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.

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

5. 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.

6. Soares M.H.; et al. Performance, carcass traits, pork quality and expression of genes related to intramuscular fat metabolism of two diverse genetic lines of pigsFoods, 11(15) 2280, 2022.

7. 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.

8. 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.

9. Costa, T.C.; et al. Skeletal Muscle Development in Postnatal Beef Cattle Resulting from Maternal Protein Restriction during Mid-GestationAnimals, v. 11, p. 1-14, 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.

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