Consulta: creatorFacets:"Alfieri,Amauri Alcindo"
Registros recuperados: 21
Data/hora: 05/06/2024 14:19:23

Impact of piglet birthweight and sow parity on mortality rates, growth performance, and carcass traits in pigs
Provedor de dados: 96
Autores: Zotti,Everson; Resmini,Fábio Arnhold; Schutz,Luis Gustavo; Volz,Nilson; Milani,Raul Pelissari; Bridi,Ana Maria; Alfieri,Amauri Alcindo; Silva,Caio Abércio da.
ABSTRACT A total of 5502 piglets from 435 sows were selected for evaluation of the effect of piglet birthweight and sow parity on mortality rate (MR), growth performance, and carcass traits in pigs. Piglets were distributed into one of eight categories according to their weight (&lt;600, 601-800, 801-1000, 1001-1200, 1201-1400, 1401-1600, 1601-1800, and &gt;1801 g) and sows were classified according to parity (1-5). The maximum MR during lactation (day 0 to day 21) was found in category &lt;600 g, whereas the lowest was observed in categories ≥1401 g. Pigs with greater body weight (BW) at birth were equivalently greater until 59 days of age. Average daily weight gain (ADG) was improved by increasing piglet birthweight between 0 and 21 days as indicated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass quality; Growth curve; Maternal effect; Pig production; Swine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001100856

Isolation in HRT-18 cells and molecular analysis of a BCoV strain from diarrheic feces of naturally infected calves
Provedor de dados: 52
Autores: Stipp,Danilo Tancler; Barry,Aline Fernandes; Alfieri,Alice Fernandes; Bodnar,Lívia; Alfieri,Amauri Alcindo.
Bovine coronavirus (BCoV) may cause acute diarrhea in newborn calves, leading to significant economic losses for cattle farmers. There are several diagnostic techniques used to detect BCoV in calf fecal samples, but virus isolation still has advantages for antigenic and genomic characterization. This study describes the isolation in HRT-18 cells and molecular characterization of Brazilian BCoV wild-type strains. Three fecal samples from diarrheic 30 day-old calves were inoculated in HRT-18 cell monolayers, which were then evaluated for HA titers and tested using semi-nested PCR followed by RFLP and sequencing. Two samples were successfully isolated and presented HA titers of 16 and 32 units per 25 mL. The results were confirmed using semi-nested PCR and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Diarrhea; Bovine coronavirus; Cell culture; Molecular analyses.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700007

Hematological and cerebrospinal fluid changes in cattle naturally and experimentally infected with the bovine herpesvirus 5
Provedor de dados: 52
Autores: Lisbôa,Júlio Augusto Naylor; Isernhagen,Allan Jürgen; Borges,Alexandre Secorun; Amorim,Rogério Martins; Balarin,Mara Regina Stipp; Lunardi,Michele; Alfieri,Amauri Alcindo.
Bovine herpesvirus 5 (BoHV-5) meningoencephalitis is one of the main causes of mortality by encephalopathy in Brazilian cattle herds. However, the neurological signs observed are common to several encephalopathies and do not contribute decisively to a diagnosis. In order to verify hematological and cerebrospinal fluid (CSF) changes, blood and CSF samples from naturally and experimentally infected bovines were evaluated. In natural cases (n=17), the samples were collected only once, and in experimental cases (n=7), the samples were sequentially obtained throughout disease progression. While routine methods were used to examine the samples, BoHV-5 infection was confirmed by a PCR assay. Blood analyses did not reveal any consistent hematological alterations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Meningoencephalitis; Herpesviruses; Complete blood count; Cerebrospinal fluid; Diagnosis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700010

A bovine teat papilloma specimen harboring Deltapapillomavirus (BPV-1) and Xipapillomavirus (BPV-6) representatives
Provedor de dados: 52
Autores: Claus,Marlise Pompeo; Lunardi,Michele; Alfieri,Amauri Alcindo; Otonel,Rodrigo Alejandro Arellano; Ferracin,Lara Munique; Fungaro,Maria Helena Pelegrinelli; Alfieri,Alice Fernandes.
The common occurrence of multiple papillomavirus infections has been shown in several studies involving the human host. However, investigations with the aim of identifying mixed papillomavirus infections in cattle have been conducted only recently. In the current work we describe a co-infection with two different bovine papillomavirus (BPV) types that was identified in a bovine teat papilloma. The skin wart was obtained from a cow belonging to a Brazilian beef herd. A PCR assay was carried out with the FAP primer pair, which amplifies a partial segment of the L1 gene (approximately 478 bp), and the amplicon was submitted to direct sequencing. Because nucleotide sequences with satisfactory quality scores were not obtained, the amplicon was cloned and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Cutaneous papillomatosis; BPV; Co-infection.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700012

Frequency of group a rotavirus in piglet stool samples from non-vaccinated Brazilian pig herds
Provedor de dados: 52
Autores: Linares,Rita de Cássia; Barry,Aline Fernandes; Alfieri,Alice Fernandes; Médici,Kerlei Cristina; Feronato,César; Grieder,Wladimir; Alfieri,Amauri Alcindo.
Neonatal diarrhea is one of the main causes of morbidity and mortality in piglets, and it leads to significant economic losses for pig farmers worldwide. The aim of this study was to determine the frequency of diagnosis, age group, and association of group A rotavirus (GARV) infection with diarrhea in piglets from pig herds in two (south and center-west)Brazilian geographical regions. The frequency of GARV diagnosis was evaluated between 2004 and 2007, using SS-PAGE on 681 fecal samples (428 diarrheic and 253 with normal consistency) from 1-4 week-old piglets. The animals were selected from 130 pig herds and 80 counties in the states of Rio Grande do Sul, Santa Catarina, Paraná, Mato Grosso do Sul, and Mato Grosso, Brazil. None of the herds were vaccinated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piglet; Neonatal diarrhea; Group A rotavirus; SS-PAGE.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700009

Multiple bovine papillomavirus infections associated with cutaneous papillomatosis in brazilian cattle herds
Provedor de dados: 52
Autores: Claus,Marlise Pompeo; Lunardi,Michele; Alfieri,Amauri Alcindo; Otonel,Rodrigo Alejandro Arellano; Sartori,Daniele; Fungaro,Maria Helena Pelegrinelli; Alfieri,Alice Fernandes.
Cutaneous papillomatosis is a pathological condition commonly found in cattle and is characterized by the presence of benign proliferative tumors caused by bovine papillomavirus (BPV) infection. While multiple infections with human papillomavirus (HPV) are common in healthy and immunodeficient humans, studies with the aim of identifying mixed infections are still sporadic in veterinary medicine. The aim of this study is to describe the occurrence of multiple BPV infections in cattle affected by cutaneous papillomatosis. Fifteen skin warts were collected from at least two diverse anatomical regions of six bovines with papillomatosis belonging to three cattle herds from the Paraná state in Brazil. The BPV types present in the skin wart samples were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Skin warts; BPV; Mixed infections.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700013

Bovine coronavirus detection in a collection of diarrheic stool samples positive for group a bovine rotavirus
Provedor de dados: 52
Autores: Barry,Aline Fernandes; Alfieri,Alice Fernandes; Stipp,Danilo Tancler; Alfieri,Amauri Alcindo.
Neonatal diarrhea is an important cause of economic losses for cattle farmers. The main viral etiologies of enteric diseases are group A rotaviruses (GARV) and the bovine coronavirus (BCoV). Although both viruses infect calves of the same age, the occurrence of mixed infections is still under studied. The present study describes the co-infection of BCoV and GARV in stool samples. Forty-four diarrheic fecal samples from calves up to 60 days old that had previously tested positive for GARV by SS-PAGE were analyzed using semi-nested PCR for BCoV. A product with 251 bp of the BCoV nucleoprotein gene was amplified in 15.9% (7/44) of the samples, demonstrating that co-infection is not an unusual event. These results reinforce the need for testing for both GARV...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calf; Diarrhea; BCoV; Rotavirus; SN-PCR; Co-infection.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700006

An outbreak of winter dysentery caused by bovine coronavirus in a high-production dairy cattle herd from a tropical country
Provedor de dados: 52
Autores: Takiuchi,Elisabete; Barry,Aline Fernandes; Alfieri,Alice Fernandes; Filippsen,Patrícia; Alfieri,Amauri Alcindo.
Bovine coronavirus (BCoV) is a known cause of winter dysentery (WD) in adult cattle. The morbidity of the disease is high, that results in a significant decrease in milk production and consequently, economic losses. In the present study, we report on a classical outbreak of WD that affected a high-production Holstein dairy herd raised in a tropical country. The lactating batch included 154 cows, and 138 (90%) presented diarrhea in a short (nine days) period of time. Three (2%) cows died. The other batches of animals did not become ill. The evolution of the disease in the herd, including the clinical signs and epidemiological features, strongly suggested a WD case. Semi-nested PCR and RFLP confirmed that BCoV was the cause of the infection. Samples tested...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Dairy herd; Winter dysentery; Diarrhea; Bovine coronavirus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700008

Validation of a PCR Assay for Chlamydophila abortus rRNA gene detection in a murine model
Provedor de dados: 52
Autores: Silva-Zacarias,Francielle Gibson da; Alfieri,Amauri Alcindo; Spohr,Kledir Anderson Hofstaetter; Lima,Bruna Azevedo de Carvalho; Negrão,Fábio Juliano; Lunardi,Michele; Freitas,Julio Cesar de.
Chlamydophila abortus (C. abortus) is associated with reproductive problems in cattle, sheep, and goats. Diagnosis of C. abortus using embryonated chicken eggs or immortalized cell lines has a very low sensitivity. Polymerase chain reaction (PCR) assays have been used to detect C. abortus infection in clinical specimens and organ fragments, such as placenta, fetal organs, vaginal secretions, and semen. The aim of this study was to develop a PCR assay for the amplification of an 856-bp fragment of the rRNA gene of the Chlamydiaceae family. The PCR assay was evaluated using organs from 15 mice experimentally infected with the S26/3 reference strain of C. abortus. The results of the rRNA PCR were compared to the results from another PCR system (Omp2 PCR) that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Ovine; Caprine; Reproductive failures; Chlamydophila abortus; PCR.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700014

Neurological and epidemiological aspects of a BoHV-5 meningoencephalitis outbreak
Provedor de dados: 52
Autores: Lunardi,Michele; Claus,Marlise Pompeo; Lisbôa,Júlio Augusto Naylor; Amude,Alexandre Mendes; Headley,Selwyn Arlington; Alfieri,Alice Fernandes; Alfieri,Amauri Alcindo.
Bovine herpesvirus 5 is a DNA virus that has been associated with meningoencephalitis in young cattle. While its clinical diagnosis is obscured by other major diseases that also produce similar neurological disease in cattle, the use of conventional virological techniques is hampered by the establishment of a lifelong latent infection in the host and the difficulty in differentiating BoHV-1 and BoHV-5. The aim of the current report is to describe the clinical and epidemiological aspects observed in a natural outbreak of BoHV-5 meningoencephalitis in a dairy cattle herd from Brazil. In the outbreak, the affected animals consisted of nine calves, which presented three possible forms of the neurological disease, subjectively classified as peracute, acute, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Central nervous system; Bovine herpesvirus 5; Multiplex-PCR.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700011

Molecular epidemiology of the human group A rotavirus in the Paraná State, Brazil
Provedor de dados: 52
Autores: Santos,Jucélia Stadinicki dos; Alfieri,Alice Fernandes; Leite,José Paulo Gagliardi; Skraba,Irene; Alfieri,Amauri Alcindo.
From January/2000 to December/2003, 550 diarrheic fecal samples from the children and adults were collected in several geographical regions of Paraná State, Brazil. The enzyme immunoassay showed 120 (21.8%) samples positive for the group A rotaviruses. One hundred and fourteen samples were genotyped by multiplex-nested-PCR assay. The highest frequency (77.5%) of the positive samples (n=93) was observed in the children under 5 years old. Rotavirus diarrhea was more frequent in the cold and dry seasons of the four evaluated years. The most frequent genotypes were: G1 (50.9%), G4 (9.6%), G9 (7.0%), G2 (1.7%), G3 (0.9%), P[ 8] (71.9%), and P[ 4] (3.5%). The P[ 8] G1 (46.5%) and P[ 8] G4 (9.6%) were the main combinations found to P and G genotypes. The mixed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diarrhea; Rotavirus; Diagnostic; PAGE; RT-PCR; Genotypes.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200008

Investigation of the possible role of Chlamydophila abortus in reproductive failures in nrazilian herds of domestic ruminants
Provedor de dados: 52
Autores: Silva-Zacarias,Francielle Gibson da; Alfieri,Amauri Alcindo; Spohr,Kledir Anderson Hofstaetter; Lima,Bruna Azevedo de Carvalho; Oliveira,Rosângela Claret de; Turilli,Carlo; Lunardi,Michele; Otonel,Rodrigo Alejandro Arellano; Freitas,Julio Cesar de.
Chlamydophila abortus (C. abortus) infection is related to reproductive failure in domestic ruminants. Although it has not been well characterized worldwide, this pathogen has already been identified in some European countries and in the USA. In Brazil, preliminary studies have shown serological evidence of C. abortus infection in herds with low antibody prevalence. Until now, the identification of C. abortus in biological samples from females presenting reproductive failures has not been described in Brazilian herds of domestic ruminants. The aim of this study was to evaluate the presence of the C. abortus in a collection of abortions from cattle (n=85), sheep (n=12), and goats (n=8), in samples of vaginal mucus from cows (n=13), sheep (n=90), and goats...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Small ruminants; Chlamydophila abortus; Abortion; Vaginal mucus; Semen.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700015

Avaliação da capacidade adjuvante do cloreto de dimetildioctadecilamônio associado ao hidróxido de alumínio na indução da resposta imune humoral de bovinos vacinados com o vírus da diarréia viral bovina
Provedor de dados: 62
Autores: Silva,Luis César da; Takiuchi,Elisabete; Médici,Kerlei Cristina; Alfieri,Alice Fernandes; Alfieri,Amauri Alcindo.
A resposta imunológica humoral de bovinos vacinados com o vírus da diarréia viral bovina (BVDV) inativado, tendo como adjuvante o cloreto de dimetildioctadecilamônio (DDA cloreto) associado ao hidróxido de alumínio (vacina B), foi comparada com uma vacina contendo o mesmo antígeno adsorvido apenas com hidróxido de alumínio (vacina A). Duas semanas após a segunda dose foi avaliado o título de anticorpos neutralizantes dos animais que receberam as duas preparações de antígenos. Os animais que receberam a vacina B apresentaram melhor resposta imune humoral quando comparados com os animais vacinados com a vacina A. O título médio de anticorpos neutralizantes, expresso em Log2, dos animais que receberam a vacina B foi superior (P&lt;0,05) ao observado no grupo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Vírus da diarréia viral bovina; Cloreto de dimetildioctadecilamônio; Vacina; Adjuvante.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962004000300009

Identification of a mutation in the spike protein cleavage site in Brazilian strains of wild-type bovine coronavirus
Provedor de dados: 58
Autores: Takiuchi,Elisabete; Barreiros,Marco Antônio Bacellar; Alfieri,Alice Fernandes; Alfieri,Amauri Alcindo.
The spike (S) protein of coronaviruses, a type I membrane glycoprotein, is primarily responsible for entry into susceptible cells by binding with specific receptors on cells and mediating subsequent virus-cell fusion. The bovine coronavirus (BCoV) S protein is cleaved into two subunits, the N-terminal S1 and the C-terminal S2. The proteolytic cleavage site of S protein is highly conserved among BCoV strains and is located between amino acids 763 and 768 (KRRSRR). This study describes a single mutation in the S protein cleavage site of three Brazilian strains of BCoV detected in diarrheic fecal samples from calves naturally infected. The sequenced PCR products revealed that amino acid sequence of the cleavage site of our strains was KRRSSR, indicating a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BCoV; Sequencing; Spike protein; Cleavage site; Mutation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400021

Virus isolation and molecular characterization of canine distemper virus by RT-PCR from a mature dog with multifocal encephalomyelit
Provedor de dados: 58
Autores: Amude,Alexandre Mendes; Carvalho,Glei dos Anjos; Alfieri,Amauri Alcindo; Alfieri,Alice Fernandes.
A case of multifocal distemper encephalomyelitis in a mature dog is described. In the presented case the ante mortem clinical diagnosis of canine distemper virus (CDV) infection could not be ideally performed due to the absence of typical signs of distemper, such as myoclonus and systemic signs accompanying the nervous signs. The definitive diagnosis of distemper encephalomyelitis was only carried out at post mortem through virus isolation in cell culture from fresh central nervous system (CNS) fragments and CDV nucleoprotein gene detection in the CNS by RT-PCR.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Canine distemper virus; Encephalomyelitis; RT-PCR.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200031

Histopathological and molecular characterization of encephalitic listeriosis in small ruminants from northern Paraná, Brazil
Provedor de dados: 58
Autores: Headley,Selwyn Arlington; Bodnar,Lívia; Fritzen,Juliana T.T.; Bronkhorst,Dalton Evert; Alfieri,Alice Fernandes; Okano,Werner; Alfieri,Amauri Alcindo.
Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria monocytogenes. Ruminants either demonstrate manifestations of the encephalitic, septicemic, or reproductive form of listeriosis. The pathological and molecular findings with encephalitic listeriosis in a 5.5-month-old, male, mixed-breed goat and a 3-year-old Texel-crossed sheep from northern Paraná, Brazil are described. Clinically, the kid demonstrated circling, lateral protrusion of the tongue, head tilt, and convulsions; the ewe presented ataxia, motor incoordination, and lateral decumbency. Brainstem dysfunctions were diagnosed clinically and listeriosis was suspected. Necropsy performed on both animals did not reveal remarkable gross lesions; significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brainstem dysfunctions; Rhombencephalitis; Neuropathology; Listeriolysin gene; Epidemiology; Listeria monocytogenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300036

Bovine herpesvirus 5 detection by virus isolation in cell culture and multiplex-PCR in central nervous system from cattle with neurological disease in Brazilian herds
Provedor de dados: 58
Autores: Claus,Marlise Pompeo; Alfieri,Alice Fernandes; Médici,Kerlei Cristina; Lunardi,Michele; Alfieri,Amauri Alcindo.
Bovine herpesvirus 5 (BoHV-5) is an important cause of meningoencephalitis in young and adult cattle. The multiple etiology of neurological disturbances in cattle makes the quick and conclusive diagnosis of BoHV-5 infection important for animal and public health, mainly because of herbivore rabies that is endemic in Brazilian cattle herds. The objective of this retrospective study was to use a multiplex-polymerase chain reaction (multiplex-PCR) for BoHV-5 and BoHV-1 glycoprotein C gene detection from stored central nervous system (CNS) tissue fragments of cattle with neurological clinical signs. Forty-seven frozen CNS samples of young and adult cattle from 31 herds in three Brazilian geographical regions (South, Southeast, and Center-west) were evaluated....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Meningoencephalitis; Bovine herpesvirus 5; Multiplex-PCR.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000300019

Segmented double-stranded genomic RNA viruses in fecal samples from broiler chicken
Provedor de dados: 58
Autores: Tamehiro,Claudia Yurika; Alfieri,Alice Fernandes; Médici,Cristina; Alfieri,Amauri Alcindo.
Segmented double-stranded RNA (dsRNA) viruses were identified by polyacrylamide gel electrophoresis (PAGE) technique in fecal samples from broiler chicken. A total of 378 fecal samples from 1-7 weeks old chickens were analyzed. dsRNA with migration profile characteristic of avian rotavirus (AvRV), reovirus (ARV) or picobirnavirus (PBV) was identified in 32 (8.5%), 7 (1.8%) and 13 (3.4%) samples, respectively. AvRV and ARV occurred more frequently in chickens up to 1 month old and were related with enteritis signs. Considering only fecal samples of chickens with diarrhea, the AvRV was detected in 37.8% (14/37) and the ARV in 13.5% (5/37) of analyzed samples. AvRV was identified in only 1.5% (4/274) and ARV was not detected in normal feces collected from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian rotavirus; Avian reovirus; Avian picobirnavirus; Broiler chickens; Diarrhea; PAGE.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400013

Use of metaphylactic protocols based on the risk to develop bovine respiratory diseases in feedlot cattle
Provedor de dados: 65
Autores: Magalhães,Layane Queiroz; Baptista,Anderson Lopes; Fonseca,Pedro de Almeida; Menezes,Guilherme Lobato; Nogueira,Geison Morel; Headley,Selwyn Arlington; Fritzen,Juliana Torres Tomazi; Alfieri,Amauri Alcindo; Saut,João Paulo Elsen.
ABSTRACT: Bovine respiratory diseases (BRD) affect production rates negatively because it compromise health and well-being of the affected animal. The hypothesis of this study was that the use of metaphylactic protocols based on the risk to develop BRD would reduce morbidity and pulmonary lesions. For this purpose, the aims of this study were to evaluate the effect of two metaphylactic protocols on the morbidity of feedlot cattle with a known sanitary history, occurrence of pulmonary lesions at slaughter, and the possible participation of Mannheimia haemolytica, Histophilus somni, Bovine alphaherpesvirus 1 (BoHV-1) and bovine respiratory syncytial virus (BRSV) in the development of BRD. An experimental study was designed in which 3,094 adult, male, cattle,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histophilus somni; Mannheimia haemolytica; Pulmonary lesions.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800454

Prevalência de anticorpos neutralizantes contra o herpesvírus bovino tipo 1, decorrente de infecção natural, em rebanhos com distúrbios reprodutivos
Provedor de dados: 65
Autores: Médici,Kerlei Cristina; Alfieri,Amauri Alcindo; Alfieri,Alice Fernandes.
A detecção de anticorpos anti-Herpesvírus Bovino tipo 1 (BHV-1) foi realizada, através da técnica de soroneutralização, em 1235 amostras de soro de bovinos adultos, não-vacinados contra Rinotraqueíte Infecciosa Bovina. As amostras de soro analisadas foram colhidas em 81 rebanhos, com histórico de problemas reprodutivos, incluindo animais com aptidão para carne e leite, provenientes de 30 municípios do Estado do Paraná. Na amostragem proveniente de rebanhos leiteiros, 41,9% (409/977) das amostras de soro e 90,5% (57/63) dos rebanhos foram considerados positivos. Em bovinos de corte, o índice de soropositividade foi de 50,8% (131/258) e 100% (18/18) para amostras de soro e rebanhos, respectivamente. As freqüências de 43,7% (540/1235) de animais e 92,6%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Herpesvirus bovino tipo 1; Sorologia; Soroneutralização; Problemas reprodutivos.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782000000200025

Ensaio imunoenzimático comercial no diagnóstico sorológico das infecções por herpesvírus bovino 1
Provedor de dados: 65
Autores: Médici,Kerlei Cristina; Alfieri,Amauri Alcindo; Alfieri,Alice Fernandes.
Avaliou-se o desempenho de um ensaio imunoenzimático, obtido de fonte comercial, na identificação de anticorpos contra herpesvírus bovino tipo 1 (BHV-1), induzidos tanto por infecção natural quanto por vacinação, em 1000 amostras de soros sangüíneos de bovinos. A análise comparativa dos resultados obtidos no sistema avaliado e na técnica padrão de soroneutralização mostrou uma concordância de 97,05% (K=0,94) entre as duas metodologias de diagnóstico sorológico.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herpesvirus bovino tipo1; Sorologia; Soroneutralização; Ensaio imunoenzimático.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782000000200024