Match!
Luis Fabian N Nuñez
University of São Paulo
18Publications
5H-index
72Citations
Publications 18
Newest
#1Natalia Azevedo Philadelpho (USP: University of São Paulo)H-Index: 2
#2Yamê Miniero Davies (USP: University of São Paulo)H-Index: 3
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 8 authors...
Avian bornaviruses (ABVs) are the causative agents of proventricular dilatation disease (PDD), a fatal neurologic disease considered to be a major threat to psittacine bird populations. We performed a reverse transcription PCR survey to detect the presence of canary avian bornavirus (CnBV) in birds of order Passeriformes related to different clinical manifestations, such as sudden death, neurologic signs, apathy, anorexia, excessive beak growth, and PDD. A total of 227 samples from captive and w...
Source
#1Luis Fabian N Nuñez (USP: University of São Paulo)H-Index: 5
#2Silvana H. Santander Parra (USP: University of São Paulo)H-Index: 5
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 8 authors...
Source
Many viruses have been associated with runting and stunting syndrome (RSS). These viral infections mainly affect young chickens, causing apathy, depression, ruffled feathers, cloacal pasting, and diarrhea. Chicken Parvovirus (ChPV) is such an infection and has been detected in chickens showing signs of enteric diseases worldwide. Therefore, the present study aims to develop a sensitive real-time fast-qPCR assay based on SYBR® Green for detection and quantification of ChPV. A 561-bp non-structura...
Source
#1Silvana H. Santander Parra (USP: University of São Paulo)H-Index: 5
#2Luis Fabian N Nuñez (USP: University of São Paulo)H-Index: 5
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 5 authors...
1. Infectious laryngotracheitis is a respiratory disease that affects the poultry industry worldwide. It is common in flocks with high-bird density, causing major economic losses.2. In this study, a SYBR® FAST polymerase chain reaction (PCR) double-strand DNA intercalating agent assay was performed for the detection of infectious laryngotracheitis virus (ILTV) in clinical samples in comparison with a conventional nested-PCR, both based on the glycoprotein E encoding gene. This assay amplified 56...
Source
Enteric viruses play an important role in the Brazilian poultry industry due to the economic impact of resulting low yields of broilers, layers, and breeders. The most common enteric viruses affecting commercial flocks in Brazil include Fowl Adenovirus of group I (FAdV-I), Chicken Parvovirus (ChPV), Chicken Astrovirus (CAstV), Avian Nephritis Virus (ANV), Infectious Bronchitis Virus (IBV), Avian Reovirus (AReo), and Avian Rotavirus (ARtV). The aim of this study was to identify single and multipl...
4 CitationsSource
#1David De la Torre (USP: University of São Paulo)H-Index: 2
#2Luis Fabian N Nuñez (USP: University of São Paulo)H-Index: 5
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 5 authors...
Avian adenovirus has been reported in many countries and is an infectious agent related with inclusion body hepatitis, hepatitis-hydropericardium syndrome (HHS), and respiratory and enteric conditions in chickens worldwide. The objective of this study was to detect and establish the molecular sequences of the hexon gene from the avian adenovirus strains of group I (FAdV-I) isolated from birds with hepatitis-hydropericardium syndrome (HHS), malabsorption syndrome and runting-stunting syndrome, to...
2 CitationsSource
#1Claudia Carranza (USP: University of São Paulo)H-Index: 3
#2Claudete S. Astolfi-Ferreira (USP: University of São Paulo)H-Index: 8
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 9 authors...
1. Infectious bronchitis virus (IBV) variants in Brazil were isolated during 2010-2015 for epidemiological and molecular analysis to characterise the different variants and perform a bioinformatic analysis to compare with sequences of variants collected over the previous 40 years. 2. Of the 453 samples examined, 61.4% were positive for IBV and 75.9% of these were considered to have the BR-I genotype and were detected in birds of all ages distributed in all five Brazilian regions. 3. The ratio of...
3 CitationsSource
#1Claudete S. Astolfi-Ferreira (USP: University of São Paulo)H-Index: 8
#2Marcelo R.S. Pequini (USP: University of São Paulo)H-Index: 1
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 8 authors...
2 CitationsSource
El peroxido de hidrogeno, en leche cruda, es utilizado para enmascarar la acidez de leche contaminada con bacterias y perjudica a microorganismos beneficiosos para la elaboracion de derivados. Por esta razon, en Ecuador, su uso esta prohibido por la NTE INEN 9. Se determino el tiempo de eliminacion del mismo y su efecto en caracteristicas fisico-quimicas y microbiologicas en leche cruda. Se tomaron muestras diarias con conservante (Bronopol) y sin conservante, y con muestra testigo sin alteracio...
Source
#1Luis Fabian N Nuñez (USP: University of São Paulo)H-Index: 5
#2Silvana H. Santander Parra (USP: University of São Paulo)H-Index: 5
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 24
view all 7 authors...
Enteric disease is a multifactorial problem in chickens, which causes gastrointestinal alterations, elevated feed conversions and impairment. In the last years, several enteric viruses were implicated in enteric disease; case reports have shown their presence alone or in concomitant infections during outbreaks and have suggested that they might be determining factors in the aetiology of enteric disease. This study shows high detection rates of enteric viruses in the pancreas and spleen in sample...
5 CitationsSource
12