Guilherme Cezar
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View article: Characterizing dynamics of PRRSV RNA positivity over time in sows after live virus exposure and associated risk factors based on TOSc samples
Characterizing dynamics of PRRSV RNA positivity over time in sows after live virus exposure and associated risk factors based on TOSc samples Open
PRRSV RNA positivity in sows based on TOSc samples decreased over time and reached low prevalence at 16 weeks post-LVI. PRRSV RNA positivity decreased significantly with the increase in parity. And the production phase effect on PRRSV RNA …
View article: Assessment of the Relationship Between Bioexclusion Practices Applied in Wean-to-Harvest Sites and PRRS Outbreaks
Assessment of the Relationship Between Bioexclusion Practices Applied in Wean-to-Harvest Sites and PRRS Outbreaks Open
Porcine reproductive and respiratory syndrome virus (PRRSV) is a significant cause of economic loss in the swine industry, yet its control remains challenging in wean-to-harvest sites. This prospective observational study followed 95 wean-…
View article: Post-outbreak dynamics and persistence of Actinobacillus pleuropneumoniae serotype 15 in finisher pigs in Iowa
Post-outbreak dynamics and persistence of Actinobacillus pleuropneumoniae serotype 15 in finisher pigs in Iowa Open
View article: 37 Usage of aggregated diagnostic data from veterinary diagnostic laboratories to monitor enteric coronavirus activity in the U.S
37 Usage of aggregated diagnostic data from veterinary diagnostic laboratories to monitor enteric coronavirus activity in the U.S Open
Every day, veterinary diagnostic laboratories (VDLs) across the U.S. receive thousands of samples for diagnostic testing. The results are shared with clients and stored in each VDL’s database for record-keeping. So, how can this data be le…
View article: Macroepidemiological trends of Influenza A virus detection through reverse transcription real-time polymerase chain reaction (RT-rtPCR) in porcine samples in the United States over the last 20 years
Macroepidemiological trends of Influenza A virus detection through reverse transcription real-time polymerase chain reaction (RT-rtPCR) in porcine samples in the United States over the last 20 years Open
Influenza A virus (IAV) in swine is a major respiratory pathogen with global significance. This study aimed to characterize the macroepidemiological patterns of IAV detection using reverse transcription real-time polymerase chain reaction …
View article: Harnessing sequencing data for porcine reproductive and respiratory syndrome virus (PRRSV): tracking genetic evolution dynamics and emerging sequences in US swine industry
Harnessing sequencing data for porcine reproductive and respiratory syndrome virus (PRRSV): tracking genetic evolution dynamics and emerging sequences in US swine industry Open
Porcine reproductive and respiratory syndrome virus (PRRSV) is the most important swine pathogen affecting the United States of America (USA), leading to significant economic losses. Despite advances in diagnostic testing, there remains a …
View article: PRRSV RNA Detection and Predictive Values Between Different Sow and Neonatal Litter Sample Types
PRRSV RNA Detection and Predictive Values Between Different Sow and Neonatal Litter Sample Types Open
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), a major challenge for the swine industry, can be transmitted both vertically and horizontally. Common sample types, including processing fluid, serum, and family oral fluid, can …
View article: Assessing the detection and interaction of Lawsonia intracellularis and porcine circovirus 2 in low and high-performance wean-to-finish pig groups in different porcine reproductive and respiratory syndrome virus detection scenarios
Assessing the detection and interaction of Lawsonia intracellularis and porcine circovirus 2 in low and high-performance wean-to-finish pig groups in different porcine reproductive and respiratory syndrome virus detection scenarios Open
Introduction Effective disease management strategies are essential for achieving optimal pig performance, ensuring high-quality animal health and welfare, and maintaining the economic viability of swine systems. Thus, understanding factors…
View article: Using diagnostic data from veterinary diagnostic laboratories to unravel macroepidemiological aspects of porcine circoviruses 2 and 3 in the United States from 2002–2023
Using diagnostic data from veterinary diagnostic laboratories to unravel macroepidemiological aspects of porcine circoviruses 2 and 3 in the United States from 2002–2023 Open
Porcine circoviruses (PCVs), including porcine circovirus 2 (PCV2) and porcine circovirus 3 (PCV3), have been associated with clinical syndromes in swine, resulting in significant economic losses. To better understand the epidemiology and …
View article: Comparison of tonsil-oral-scrubbing with serum, oral fluid, and tonsil scraping to detect PRRSV RNA in sows over time following live virus inoculation
Comparison of tonsil-oral-scrubbing with serum, oral fluid, and tonsil scraping to detect PRRSV RNA in sows over time following live virus inoculation Open
Introduction Current common sample types for sows, such as serum and tonsil scraping, require snaring the animals, which can be labor-intensive and raise concerns regarding animal welfare. Obtaining oral fluids (OF) from individual sows in…
View article: Monitoring emerging pathogens using negative nucleic acid test results from endemic pathogens in pig populations: Application to porcine enteric coronaviruses
Monitoring emerging pathogens using negative nucleic acid test results from endemic pathogens in pig populations: Application to porcine enteric coronaviruses Open
This study evaluated the use of endemic enteric coronaviruses polymerase chain reaction (PCR)-negative testing results as an alternative approach to detect the emergence of animal health threats with similar clinical diseases presentation.…
View article: Assessment of individual and population-based sampling for detection of Influenza A virus RNA in breeding swine herds
Assessment of individual and population-based sampling for detection of Influenza A virus RNA in breeding swine herds Open
This study compared the probability of IAV RNA detection between selected individual and population-based samples. A 3500-sow breeding herd was sampled for matched sets (n = 57) of FOF, udder wipes, sow nasal wipes, individual piglet nasal…
View article: Assessment of temperature and time on the survivability of porcine reproductive and respiratory syndrome virus (PRRSV) and porcine epidemic diarrhea virus (PEDV) on experimentally contaminated surfaces
Assessment of temperature and time on the survivability of porcine reproductive and respiratory syndrome virus (PRRSV) and porcine epidemic diarrhea virus (PEDV) on experimentally contaminated surfaces Open
Fomites might be responsible for virus introduction in swine farms, highlighting the importance of implementing practices to minimize the probability of virus introduction. The study’s objective was to assess the efficacy of different comb…
View article: Assessment of Individual and Population-Based Sampling for Detection of Influenza a Virus RNA in Breeding Swine Herds
Assessment of Individual and Population-Based Sampling for Detection of Influenza a Virus RNA in Breeding Swine Herds Open
View article: A cross-sectional assessment of PRRSV nucleic acid detection by RT-qPCR in serum, ear-vein blood swabs, nasal swabs, and oral swabs from weaning-age pigs under field conditions
A cross-sectional assessment of PRRSV nucleic acid detection by RT-qPCR in serum, ear-vein blood swabs, nasal swabs, and oral swabs from weaning-age pigs under field conditions Open
Introduction The porcine reproductive and respiratory syndrome virus (PRRSV) continues to challenge swine production in the US and most parts of the world. Effective PRRSV surveillance in swine herds can be challenging, especially because …
View article: Porcine reproductive and respiratory syndrome virus RNA detection in tongue tips from dead animals
Porcine reproductive and respiratory syndrome virus RNA detection in tongue tips from dead animals Open
The control of porcine reproductive and respiratory syndrome virus (PRRSV) hinges on monitoring and surveillance. The objective of this study was to assess PRRSV RNA detection by RT-PCR in tongue tips from dead suckling piglets compared to…
View article: Porcine reproductive and respiratory syndrome virus RNA detection in tongue tips from dead animals
Porcine reproductive and respiratory syndrome virus RNA detection in tongue tips from dead animals Open
The control of porcine reproductive and respiratory syndrome virus (PRRSV) hinges on monitoring and surveillance. The objective of this study was to assess PRRSV RNA detection by RT-PCR in tongue tips from dead suckling piglets compared to…
View article: Correlation between sperm kinetics and in vitro fertilization potential of girolando bulls
Correlation between sperm kinetics and in vitro fertilization potential of girolando bulls Open
The present study to evaluate the correlation between semen kinetics parameters analyzed using Computer-assisted Semen Analysis (CASA) and in vitro embryo production (IVEP) in Girolando breed bulls.First, semen samples from five Girolando …
View article: Correlation between insemination dose and bovine sperm traits on the in vitro embryo production outcomes
Correlation between insemination dose and bovine sperm traits on the in vitro embryo production outcomes Open
In the present study we aimed to test the best insemination dose for in vitro embryo production (IVEP) and to correlate sperm traits in bovine.In vitro matured oocytes were inseminated with three different sperm concentrations of the same …
View article: Doença de Glässer: Uma revisão
Doença de Glässer: Uma revisão Open
Haemophilus parasuis é o agente etiológico da doença de Glässer e causa graves prejuízos econômicos na indústria suína. O diagnóstico da doença é baseado na associação do histórico clínico do rebanho, isolamento da bactéria e sorotipagem. …