Faculty Profile for Dr. Cesar Augusto Rosales Nieto

profile photo for Dr. Cesar Augusto Rosales Nieto
Dr. Cesar Augusto Rosales Nieto
Assistant Professor — Department of Agricultural Sciences
AG 206
phone: (512) 408-3081

Biography Section

Biography and Education

Dr. Cesar A. Rosales-Nieto is an Assistant Professor in the Department of Agricultural Sciences at Texas State University. Before joining Texas State University, Dr. Rosales-Nieto worked at the University of San Luis Potosi in Mexico as a full-time Professor, and before that, at the National Institute for Forestry, Agriculture and Livestock Research (INIFAP-Mexico) as a Principal Researcher in Animal Science. Dr. Rosales-Nieto graduated from the Universidad Autonoma de San Luis Potosi (Mexico) with a BSc in Agronomy (Hons). He received a Master’s degree in Animal Reproduction from Texas A&M University-Kingsville. Subsequently, Dr. Rosales-Nieto obtained his Doctoral degree in Physiology of Reproduction from the University of Western Australia. He investigated the role of muscle and fat accumulation on the onset of puberty and the reproductive efficiency of sheep. He was a Fulbright-Garcia Robles scholar and pursued his post-doctoral studies at Michigan State University (USA) on the mechanism that underlies maternal diet manipulation on fetal programming and postnatal development.

Teaching Interests

Physiology of Reproduction
Reproductive Management

Research Interests

Understanding the fundamental events that regulate animal production and reproduction is key to improving our management to manipulate the environment to increase efficiency in livestock animals. Small ruminants (goats and sheep) provide a powerful model system to investigate reproductive consequences due to the similarity between sheep and human pregnancy and their developmental trajectories during fetal and postnatal life.

Dr. Rosales Nieto's research is aimed at understanding how environmental factors and nutritional manipulation at different stages of the physiological process (conception, gestation, early lactation) can influence fetal growth, milk and colostrum production, birth weight, and secondary consequences during postnatal development, the onset of puberty and reproductive efficiency of small ruminants (sheep and goats) reared in arid and semi-arid rangelands. Importantly, it is to understand the role of different placental signals, metabolites, metabolic and reproductive hormones on muscle and fat tissue on the development and further reproductive activity when an insult has occurred.

Future studies will investigate the role of different nutritional alternatives at different stages of the physiological process (conception, gestation, early lactation) to enhance the productive and reproductive efficiency of small ruminants (sheep and goats) reared in semi-arid rangelands.

Selected Scholarly/Creative Work

  • Rosales Nieto, C. A., Thompson, A., Cuevas-Reyes, V., Hérnandez-Arteaga, L., Greeff, J., Ehrhardt, R., … Martin, G. (2024). Utilising male stimulus to improve the reproductive efficiency of 8-month-old nulliparous ewes and adult parous ewes. Theriogenology, 127, 143–150. https://doi.org/https://doi.org/10.1016/j.theriogenology.2024.01.023
  • Rosales Nieto, C. A., Rodríguez-Aguilar, M., Santiago-Hernandez, F., Cuevas-Reyes, V., Flores-Najera, M. J., Vázquez-García, M. M., … Martin, G. B. (2021). Periconceptional nutrition with spineless cactus (Opuntia ficus-indica) improves metabolomic profiles and pregnancy outcomes in sheep. Scientific Reports, 11(1), 7214. https://doi.org/10.1038/s41598-021-86653-w
  • Rosales Nieto, C., Ehrhardt, R., Mantey, A., Makela, B., Byrem, A., & Veiga-Lopez, A. (2021). Preconceptional diet manipulation and fetus number can influence placenta endocrine function in sheep. Domestic Animal Endocrinology, 74, 106557. https://doi.org/https://doi.org/10.1016/j.domaniend.2020.106577
  • Rosales Nieto, C., Mantey, A., Makela, B., Byrem, T., Ehrhardt, R., & Veiga-Lopez, A. (2019). Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep. Animal, 14(4), 799. https://doi.org/10.1017/S1751731119002696
  • Rosales Nieto, C., Thompson, A., & Martin, G. (2018). A new perspective on managing the onset of puberty and early reproductive performance in ewe lambs: A review. Animal Production Science, 58(11), 1967. https://doi.org/https://doi.org/10.1071/AN17787

Selected Grants

  • Rosales Nieto, Cesar Augusto (Principal). Start-up Project, Texas State University, $325352. (Funded: June 1, 2023 - Present). Grant.

Selected Service Activities

Editorial Review Board Member
February 1, 2019-December 31, 2026
Editorial Review Board Member
January 1, 2019-December 31, 2025
Reviewer / Referee
Reproduction Domestic Animals
January 1, 2019-December 31, 2025
Editorial Review Board Member
Journal of Agricultural Science
January 1, 2017-December 31, 2025
Reviewer / Referee
Tropical Animal Health and Production
January 1, 2016-December 31, 2025