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Fernando Esteban Ulloa Ortega

Enfermedades infecciosas de bovinos, mastitis bovina, resistencia a los antibióticos.

Médico Veterinario, UNIVERSIDAD AUSTRAL DE CHILE. Chile, 2013
Magister en Ciencias con mención en Microbiología, UNIVERSIDAD AUSTRAL DE CHILE. Chile, 2019
Doctorado en Ciencias Veterinarias, Universidad Austral de Chile. Chile, 2025


A bayesian analysis of phage-based qPCR and liquid culture for the early detection of <i>Mycobacterium avium</i> subsp. <i>paratuberculosis </i>in young dairy calves Hernandez-Agudelo, Jose M.; Verdugo, Cristobal; Barkema, Herman W.; Steuer, Pamela; Tejeda, Carlos; Ulloa, Fernando; Salgado, Miguel A. Article ISI PREVENTIVE VETERINARY MEDICINE (2026)
Exploring the Therapeutic Potential of Essential Oils of the Valdivian Rainforest (<i>Drimys winteri</i> and <i>Laureliopsis philippiana</i>) for Sustainable Udder Health in Dairy Systems Vera, Isavo; Vera, Leslie; Cabrapan, Diego; Ramos, Paola; Ulloa, Fernando; Pantoja, Diana; Aranguiz, Florencia; Jacobs, Martina; Rojas, Nicole; Carretta, Maria Daniella; et al. Article ISI ANIMALS (2026)
Subtle shifts in fecal microbiota diversity during early stages of<i> Mycobacterium</i><i> avium</i> subsp.<i> paratuberculosis</i> pathogenesis in dairy cattle Steuer, P.; Tejeda, C.; Hernandez-Agudelo, J. M.; Ulloa, F.; Addis, M. F.; Salgado, M. Article ISI VETERINARY MICROBIOLOGY (2026)
Analysis of pathogenic bacteria and antimicrobial residues in bovine waste milk on dairy farms in southern Chile Ulloa, Fernando; Penati, Martina; Hernandez-Agudelo, Jose M.; Tejeda, Carlos; Steuer, Pamela; Addis, Maria Filippa; Mella, Armin; Canales, Nivia; Soto, Juan Pablo; Salgado, Miguel Article ISI Frontiers in Veterinary Science (2025)
Early-life shedding and environmental presence of Mycobacterium avium ssp. paratuberculosis in Chilean dairy calves Hernandez-Agudelo, Jose M.; Verdugo, Cristobal; Barkema, Herman W.; Steuer, Pamela; Tejeda, Carlos; Ulloa, Fernando; Soto, Juan P.; Salgado, Miguel A. Article ISI Journal of Dairy Science (2025)
Enterococcus species identified by MALDI-TOF MS in milk from dairy cow mastitis cases and herd surveys Ulloa, F.; Penati, M; Monistero V.; Bronzo, V; Moroni P.; Salgado, M.; Addis, MF Article ISI Veterinary Research Communications (2025)
Prevalence of Variant GTRI Staphylococcus aureus Isolated from Dairy Cow Milk Samples in the Alpine Grazing System of the Aosta Valley and Its Association with AMR and Virulence Profiles Monistero V.; Hossain, D; Poli, SF; de Medeiros, ES; Cremonesi P.; Castiglioni B.; Biscarini, F.; Graber, HU; Mochettaz, G; Ganio, S; et al. Article ISI Antibiotics (2025)
An update on non-aureus staphylococci and mammaliicocci in cow milk: unveiling the presence of Staphylococcus borealis and Staphylococcus rostri by MALDI-TOF MS Locatelli, Clara; Monistero, Valentina; Pavesi, Laura Filippone; Santandrea, Federica; Bronzo, Valerio Article ISI (2024)
Efficacy of Copper Ion Treatment on Bacteria and Antibiotic Residues Contained in Bovine Waste Milk Naegel, Constanza; Hernandez-Agudelo, Miguel; Salgado, Miguel Article ISI (2024)
Experimental assessment of the efficacy of copper ion treatm against penicillin G contained in UHT milk and PBS ent Tejeda, C. Carlos; SALGADO-ALFARO, MIGUEL ANGEL Article ISI SCIELO (2024)
Multidrug-Resistant Extended-Spectrum Beta-Lactamase (ESBL)-Producing Escherichia coli in a Dairy Herd: Distribution and Antimicrobial Resistance Profiles Penati, Martina; Musa, Laura; Filippone Pavesi, Laura; Guaraglia, Alessandro; Piccinini, Renata; Addis, Maria Filippa Article ISI (2024)
Response of Mycobacterium avium subsp. paratuberculosis isolates to reactive oxygen stress generated by treatment with copper ions Barkema, HW; Salgado, Miguel Article VETERINARY MICROBIOLOGY (2024)
Evidence of Homeostatic Regulation in Mycobacterium avium Subspecies paratuberculosis as an Adaptive Response to Copper Stress Hernandez-Agudelo, Jose M.; Salgado, Miguel Article ISI SCOPUS Microorganisms (2023)
Experimental evidence of the anti-bacterial activity pathway of copper ion treatment on Mycobacterium avium subsp. paratuberculosis Tejeda; C.; Villegas; M.; Steuer; P.; Ulloa; F.; Iranzo; E.C.; Reyes-Jara; A.; Salgado; M Article ISI SCOPUS Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] (2023)
Molecular and serological prevalence of Coxiella burnetii in bovine dairy herds in southern Chile: A PCR and ELISA-based assessment of bulk tank milk samples Hernandez-Agudelo, J. M.; Tomckowiak, C.; Soto, J. P. Article ISI SCOPUS Acta Tropica (2023)
First test-day postcalving risk factors for clinical mastitis in southern Chile dairy farms: A retrospective cohort study Astorga-Jorquera F.; Aly, S. S.; Cornuy C. Article ISI SCOPUS JOURNAL OF DAIRY SCIENCE (2022)
Mycoplasma isolation in milk samples from dairy herds in Chile Fernando Ulloa; Juan P. Soto; Juan Kruze; armin mella Article SCIELO SCOPUS Austral journal of veterinary sciences (2021)
In vitro inactivation of Mycobacterium avium subsp paratuberculosis (MAP) by use of copper ions Steuer, P.; Avilez, C; Mella A.; Grant, I. R.; Collins, M. T. Article ISI SCOPUS BMC MICROBIOLOGY (2018)
Evaluation of a new vaccine against Staphylococcus aureus mastitis in dairy herds of southern Chile. I. Challenge trial armin mella; Fernando Ulloa; Iván Valdés; Nicolás Olivares; Alejandro Ceballos; Juan Kruze Article ISI SCIELO AUSTRAL JOURNAL OF VETERINARY SCIENCES (2017)


What is the fate of pathogens and antibiotic residues in cow waste milk after being treated with copper ions? Proyecto (2024)
Prototipo para tratar leche con iones de cobre Salgado, Miguel Proyecto (2021)

Alfredo Ramírez

Profesor Asociado

Instituto de Ciencia Animal

UNIVERSIDAD AUSTRAL DE CHILE

Valdivia, Chile

Miguel Salgado

UNIVERSIDAD AUSTRAL DE CHILE

Valdivia, Chile

Angelica Reyes

Profesor Asociado

INTA UNIVERSIDAD DE CHILE

Santiago, Chile

Armin Mella

Docente

Bioquímica y Microbiología

Universidad Austral de Chile

Valdivia, Chile

Fernando Ulloa

PAMELA STEUER

Profesora adjunta ad honorem

Medicina Preventiva Veterinaria

Universidad Austral de Chile

Valdivia, Chile

Fernando Esteban Ulloa Ortega

Líneas de Investigación

Educación

Médico Veterinario, UNIVERSIDAD AUSTRAL DE CHILE. Chile, 2013

Magister en Ciencias con mención en Microbiología, UNIVERSIDAD AUSTRAL DE CHILE. Chile, 2019

Doctorado en Ciencias Veterinarias, Universidad Austral de Chile. Chile, 2025

Article (19)

A bayesian analysis of phage-based qPCR and liquid culture for the early detection of <i>Mycobacterium avium</i> subsp. <i>paratuberculosis </i>in young dairy calves

Exploring the Therapeutic Potential of Essential Oils of the Valdivian Rainforest (<i>Drimys winteri</i> and <i>Laureliopsis philippiana</i>) for Sustainable Udder Health in Dairy Systems

Subtle shifts in fecal microbiota diversity during early stages of<i> Mycobacterium</i><i> avium</i> subsp.<i> paratuberculosis</i> pathogenesis in dairy cattle

Analysis of pathogenic bacteria and antimicrobial residues in bovine waste milk on dairy farms in southern Chile

Early-life shedding and environmental presence of Mycobacterium avium ssp. paratuberculosis in Chilean dairy calves

Enterococcus species identified by MALDI-TOF MS in milk from dairy cow mastitis cases and herd surveys

Prevalence of Variant GTRI Staphylococcus aureus Isolated from Dairy Cow Milk Samples in the Alpine Grazing System of the Aosta Valley and Its Association with AMR and Virulence Profiles

An update on non-aureus staphylococci and mammaliicocci in cow milk: unveiling the presence of Staphylococcus borealis and Staphylococcus rostri by MALDI-TOF MS

Efficacy of Copper Ion Treatment on Bacteria and Antibiotic Residues Contained in Bovine Waste Milk

Experimental assessment of the efficacy of copper ion treatm against penicillin G contained in UHT milk and PBS ent

Multidrug-Resistant Extended-Spectrum Beta-Lactamase (ESBL)-Producing Escherichia coli in a Dairy Herd: Distribution and Antimicrobial Resistance Profiles

Response of Mycobacterium avium subsp. paratuberculosis isolates to reactive oxygen stress generated by treatment with copper ions

Evidence of Homeostatic Regulation in Mycobacterium avium Subspecies paratuberculosis as an Adaptive Response to Copper Stress

Experimental evidence of the anti-bacterial activity pathway of copper ion treatment on Mycobacterium avium subsp. paratuberculosis

Molecular and serological prevalence of Coxiella burnetii in bovine dairy herds in southern Chile: A PCR and ELISA-based assessment of bulk tank milk samples

First test-day postcalving risk factors for clinical mastitis in southern Chile dairy farms: A retrospective cohort study

Mycoplasma isolation in milk samples from dairy herds in Chile

In vitro inactivation of Mycobacterium avium subsp paratuberculosis (MAP) by use of copper ions

Evaluation of a new vaccine against Staphylococcus aureus mastitis in dairy herds of southern Chile. I. Challenge trial

Proyecto (2)

What is the fate of pathogens and antibiotic residues in cow waste milk after being treated with copper ions?

Prototipo para tratar leche con iones de cobre

Alfredo Ramírez

Miguel Salgado

Angelica Reyes

Armin Mella

Fernando Ulloa

PAMELA STEUER