Herd and within-herd BoHV-1 prevalence among Irish beef herds submitting bulls for entry to a performance testing station

O’Grady, Luke; O’Neill, R; Collins, Denis M.; Clegg, Tracy A.; More, Simon J.

doi:10.1186/2046-0481-61-12-809

Cited by 22 publications

(28 citation statements)

References 17 publications

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“…All calves in the present study had elevated maternally derived antibodies to BRSV and BoHV-1 (wt) by 12 h post-birth. Cowley, Clegg, Doherty, and More (2011) reported herd-level seroprevalence of BoHV-1 in Ireland at a rate of 74.9%, which is in agreement with previous findings for bulls (O'Grady et al, 2008), and with the results of the present study. Our findings showed that the cows had total BoHV-1 wt antibodies circulating in their blood; this indicated that these animals had been naturally exposed to BoHV-1 at some stage in their lifetime.…”

Section: Discussionsupporting

confidence: 93%

“…In Ireland, limited information has emerged regarding bovine herpesvirus 1 (BoHV-1) infection, albeit from a subset of Irish beef herds (O'Grady, ONeill, Collins, Clegg, and More, 2008) of which 73.2% were seropositive. BoHV-1 virus causes respiratory infections and abortions in cattle, and is an important component of the bovine respiratory disease complex, which causes a considerable economic loss worldwide (Chowdhury, Wei, Weiss, Pannhorst, and Paulsen, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Effect of suckler cow vaccination against glycoprotein E (gE)-negative bovine herpesvirus type 1 (BoHV-1) on passive immunity and physiological response to subsequent bovine respiratory disease vaccination of their progeny

Earley

Tiernan

Duffy

et al. 2018

Research in Veterinary Science

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The study objectives were: 1) to characterise the development of immunocompetence in beef suckler calves from birth to three months of age, and 2) to trace glycoprotein E (gE)-negative bovine herpesvirus type 1 (BoHV-1) antibodies from dam to calf and subsequent vaccination against pneumonia. Thirty multiparous beef suckler, spring-calving cows, consisting of two genotypes were involved; Limousin×Friesian (LF) and Charolais×Limousin (CL). Cows were immunised against the inactivated antigen strain of BoHV-1 (gE- (IBR marker vaccine) at day -84 and received a booster at day -56 relative to the expected calving date (d 0). Calves were immunised at 14 and 42days of age against PI-3 virus, BRSV and Mannheimia (Pasteurella) haemolytica serotype A1 using a commercial vaccine administered subcutaneously. Additionally, calves were immunised against BoHV-1 at 42days of age, using 1 dose of a live commercial vaccine administered intranasally. Blood samples were collected from all calves (n=30) via jugular venipuncture at birth, prior to colostrum feeding (0h), at 12h (h), 24h, 72h and 168h after the initial feeding of colostrum, and at d 7, 14, 28, 42, 56 and 84 post birth. The mean ratio of gE negative antibodies circulating in the blood of LF and CL dams pre-partum scored negative to gE ab (S/N≥0.70). Antibody levels of BoHV-1 (wild type (wt)) peaked at 12h post-birth in calves and declined thereafter, as the maternal antibodies decayed. There was no difference in BoHV-1 and BRSV antibody levels in calves post vaccination.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Effect of suckler cow vaccination against glycoprotein E (gE)-negative bovine herpesvirus type 1 (BoHV-1) on passive immunity and physiological response to subsequent bovine respiratory disease vaccination of their progeny

Earley

Tiernan

Duffy

et al. 2018

Research in Veterinary Science

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“…More recent studies have consistently reported markedly increased seroprevalence in both dairy and beef herds in Ireland. An investigation into the inter- and intra-herd seroprevalence of BoHV-1 in beef herds supplying bulls to an Irish performance testing station found herd prevalence to be 73.2% with a mean within herd prevalence of 28% (±20%) [46]. …”

Section: Reviewmentioning

confidence: 99%

Bovine herpes virus-1 (BoHV-1) in cattle–a review with emphasis on reproductive impacts and the emergence of infection in Ireland and the United Kingdom

Graham

2013

Ir Vet J

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Bovine reproductive disease attributable to bovine herpes virus-1 (BoHV-1) was first described in Germany in the 19th century, being recognised primarily as the cause of infectious vulvovaginitis and balanoposthitis until the mid-1950s when a more virulent strain of the virus (BoHV-1.1) associated with respiratory disease (infectious bovine rhinotracheitis; IBR) emerged in the western United States. Subsequently, IBR emerged as a clinical condition in Europe, from the 1970s onward. While the ability of BoHV-1 to produce respiratory disease is now well recognised, the potential negative outcomes of infection on fertility and reproduction are less frequently considered. This review was conducted against the background of the prioritization of disease caused by BoHV-1 as one of several diseases to be addressed by Animal Health Ireland, with the twin goals of summarizing the published literature on the potential outcomes of infection at different stages of breeding and pregnancy, and of describing the emergence of BoHV-1 as a significant pathogen in Ireland and the UK.

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“…infection (van Schaik et al, 1998;O'Grady et al, 2008). In this respect, percentage of inter-herd movements was used as a measure of biosecurity within the herds sampled in the present study.…”

Section: Risk Factors For Bhv-1 Pathogenicitymentioning

confidence: 99%

Modelling the impact of bovine herpesvirus-1 seropositivity on the technical and economic performance of a pastoral-based suckler beef system

et al. 2018

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Bovine herpes virus 1 (BHV-1) manifests as a latent viral infection putatively affecting bovines. Understanding its effect on cattle herds is critical to maintaining sustainable beef and dairy production systems, as well as aiding in the development of herd health policies. The primary objective of the current study was, therefore, to use a whole-farm bio-economic model to evaluate the effect of herd seroprevalence to BHV-1 on the productive and economic performance of a spring calving beef cow herd. As part of a wider epidemiological study of herd pathogen status, a total of 4240 cows from 134 spring calving beef cow herds across the Republic of Ireland were blood sampled to measure the seroprevalence to BHV-1. Using data from a national breeding database, productive and reproductive performance indicators were used to parameterize a single year, static and deterministic whole-farm bio-economic model. A spring-calving, pasture-based suckler beef cow production system with an emphasis on calf-to-weanling production was simulated. The impact of BHV-1 seropositivity on whole-farm technical and economic performance was relatively small, with a marginal drop in the net margin of 4% relative to a baseline seronegative herd. Subsequent risk factors for increased pathogenicity were considered such as total herd size, percentage of intra-herd movements and vaccination status for BHV-1. In contrast to all others, scenarios representing herds that were either small in size or those which indicated an active vaccination policy for BHV-1 had no reduction in net margin against the baseline as a result of seropositivity to BHV-1.

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Herd and within-herd BoHV-1 prevalence among Irish beef herds submitting bulls for entry to a performance testing station

Cited by 22 publications

References 17 publications

Effect of suckler cow vaccination against glycoprotein E (gE)-negative bovine herpesvirus type 1 (BoHV-1) on passive immunity and physiological response to subsequent bovine respiratory disease vaccination of their progeny

Effect of suckler cow vaccination against glycoprotein E (gE)-negative bovine herpesvirus type 1 (BoHV-1) on passive immunity and physiological response to subsequent bovine respiratory disease vaccination of their progeny

Bovine herpes virus-1 (BoHV-1) in cattle–a review with emphasis on reproductive impacts and the emergence of infection in Ireland and the United Kingdom

Modelling the impact of bovine herpesvirus-1 seropositivity on the technical and economic performance of a pastoral-based suckler beef system

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