Association of herd BHV-1 seroprevalence with respiratory disease in youngstock in Estonian dairy cattle

Raaperi, Kerli; Bougeard, Stéphanie; Aleksejev, A.; Orro, Toomas; Viltrop, Arvo

doi:10.1016/j.rvsc.2011.10.015

Cited by 14 publications

(12 citation statements)

References 30 publications

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“…The virus is responsible for severe economic losses to the dairy industry worldwide due to abortions leading to increased calving interval, reduced milk yield, weight loss, and restrictions on international livestock trade [2]. Clinically disease manifests as conjunctivitis, red nose, abortions and reduction in milk yield [3]. BoHV-1 genome encloses 10 genes encoding glycoproteins, among them six are in the upper long (UL) segment whereas the remaining four ones are in the upper short segment [4].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers used partial sequencing of the UL27 gene to evaluate the genetic variation of BoHV-1 isolates [16]. UL27 gene codes for glycoprotein B (gB), one of the immunonodominant antigens present in the viral envelope, is involved in virus attachment, entry, direct cell-to-cell spread, and fusion [3]. It induces strong neutralizing antibody response [17,18] and is recognized by CD4+ helper T lymphocytes [19] making it a potential candidate for subunit vaccine and recombinant protein-based enzyme-linked immunosorbent assay.…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic analysis of glycoprotein B gene sequences of bovine herpesvirus 1 isolates from India reveals the predominance of subtype 1.1.

et al. 2016

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Aim:This study was conducted for the isolation and molecular characterization of bovine herpesvirus 1 (BoHV-1) isolated from the nasal and vaginal swabs collected from naturally infected cattle showing clinical symptoms of the respiratory disease.Materials and Methods:Isolation of BoHV-1 virus performed on clinical samples collected from 65 cattle from five states of India. The BoHV-1 isolates were further confirmed by polymerase chain reaction (PCR) using primers specific for glycoprotein B (gB) genomic region. PCR amplification was performed using previously published gB gene-specific primer pairs. gB PCR amplicons obtained from all isolates were sequenced, and phylogenetic analysis was performed using software.Results:A total of 12 samples were found positive in cell culture isolation. 11 isolates showed the visible cytopathic effect on Madin-Darby bovine kidney after 72 h. Partial sequence analysis of gB gene of all isolates revealed 99.0-100% homology between them. All isolates showed 99.2-99.8% homology with Cooper stain.Conclusion:BoHV-1.1 is the predominant circulating subtype of BoHV in India, and all isolates have homology with Cooper stain.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phylogenetic analysis of glycoprotein B gene sequences of bovine herpesvirus 1 isolates from India reveals the predominance of subtype 1.1.

et al. 2016

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“…Conception rates were higher in seronegative (38.98%) than in seropositive cows (33.33%) (Graham 2013). In another study with dairy herds comprising 9,637 animals in 65 seropositive and 38 seronegative herds, BoHV-1 was significantly related to reproductive performance with the highest risk of increased insemination index and abortions occurring in herds with a moderate seroprevalence (Raaperi et al 2012). Finally, dairy herds in Ireland found a significant association between serological evidence of exposure to BoHV-1 and reduced conception rate (Geraghty et al 2012).…”

Section: Discussionmentioning

confidence: 93%

Immune-serological identification of infectious agents with influence on bovine embryo transfer in the north of Brazil

et al. 2016

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ABSTRACT. The aim of this study was to investigate antibodies against brucellosis, leptospirosis, bovine rhinotracheitis (IBR/ BoHV-1), bovine viral diarrhea (BVD) and neosporosis through immunodiagnostic. These agents may directly or indirectly compromise the female bovine reproductive tract as well as embryonic and fetal development, therefore we also tried to establish a probable relation between those antibody with the utilization rates of fixed-time embryo transfer (FTET) protocols, with pregnancy rate per embryo transfer (ET) and the occurrence of miscarriages. Embryos were obtained by in vitro fertilization of the ovum and sperm from the Gyr dairy breed, which were transferred to 235 zebu-crossbred cows under FTET protocols. The blood samples to obtain serum were collected by venous puncture from coccygeal vein, only a few days of the completion of ET. For the immunodiagnostic research of brucellosis, leptospirosis, IBR/BoHV-1, BVD and neosporosis, the complement fixation assay, the microscopic agglutination test, virus neutralization, and linked immunosorbent assay to enzymes in conjunction with the indirect immunofluorescence were used. The utilization rates of the FTET protocols related to pregnancy and abortion in D16, D35, and D75 were 67.23%, 34,18% and 20,37% respectively. The immunodiagnostic results related to seropositive animals were obtained for brucellosis (7/235 = 2.89%), leptospirosis (128/235 = 54.47%), IBR (103/235 = 43.83%), BVD (174/235 = 74.04%), and neosporosis (150/235 = 63.82%). In seropositive recipients, there was an observed influence (P < 0.05) of leptospirosis and neosporosis on the rate of protocol utilization of brucellosis on both the pregnancy and abortion rate, and of BVD and IBR on abortion rate.Key words: reproductive, embryo, recipients, cattle. RESUMEN.El estudio tuvo por finalidad evidenciar, mediante técnicas de inmunodiagnóstico, anticuerpos contra Brucelosis, Leptospirosis, Rinotraqueítis Infecciosa Bovina (IBR), Diarrea Viral Bovina (DVB) y Neosporosis, agentes que directa o indirectamente pueden comprometer el tracto reproductor de las hembras así como el desarrollo embrionario y fetal. Se estableció una probable relación entre la presencia de anticuerpos contra los agentes con la tasa de aprovechamiento de protocolos de transferencias de embriones en tiempo fijo (TETF), la tasa de preñez por transferencia de embriones (TE) y la ocurrencia de abortos. Los embriones fueron obtenidos por fertilización in vitro (FIV) a partir de aspiración folicular y semen de toros, ambos de raza Gyr lechero, y tranferidos a 235 vacas receptoras cruzadas con Cebú sometidas a protocolos para TETF. Se obtuvo suero de muestras de sangre mediante venopunción de la vena coccígea solamente en los días de realización de TE. Para evidenciar Brucelosis, Leptospirosis, IBR, DVB y Neospora se emplearon las técnicas de fijación de complemento, seroaglutinación microscópica, seroneutralización y test de inmunoensayo (ELISA) junto con la inmunofluorescencia indirecta (RIFI), respectivamente. El ...

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“…From our previous studies we reported a significant association between high occurrence of respiratory disease in unweaned calves and the presence of BHV-1 among cows (Raaperi et al, 2012b). However, BHV-1 was not significantly associated with high respiratory disease occurrence among heifers (Raaperi et al, 2012b) or cows (Raaperi et al, 2012c). Unfortunately there is no obligation to insert disease incidence data into the EARC database, so we could not test the change of respiratory disease incidence statistically.…”

Section: Discussionmentioning

confidence: 94%

Effect of vaccination against bovine herpesvirus 1 with inactivated gE-negative marker vaccines on the health of dairy cattle herds

Raaperi

Orro

Viltrop

2015

Preventive Veterinary Medicine

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Association of herd BHV-1 seroprevalence with respiratory disease in youngstock in Estonian dairy cattle

Cited by 14 publications

References 30 publications

Phylogenetic analysis of glycoprotein B gene sequences of bovine herpesvirus 1 isolates from India reveals the predominance of subtype 1.1.

Phylogenetic analysis of glycoprotein B gene sequences of bovine herpesvirus 1 isolates from India reveals the predominance of subtype 1.1.

Immune-serological identification of infectious agents with influence on bovine embryo transfer in the north of Brazil

Effect of vaccination against bovine herpesvirus 1 with inactivated gE-negative marker vaccines on the health of dairy cattle herds

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