Epidemiology of infectious bursal disease in broiler birds of three districts in Bangladesh

Chakma, Shovon

doi:10.3329/ajmbr.v1i1.25499

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…The prevalence of IBD was significantly higher in broiler chickens which agreed with several previous findings Das et al, 2018). The prevalence was higher between the age of 11 and 35 days which is congruent with the earlier published research articles (Chakma, 2015;Islam et al, 2016;Hassan et al, 2016;Rahman et al, 2019). Initial 2 weeks of ages, chicks get maternally derived antibody from mother, after that proper vaccination should be ensured to protect from IBD (Rashid et al, 2013).…”

Section: Discussionsupporting

confidence: 88%

“…It is noted that about 30% of total chickens in Bangladesh die due to several disease outbreak (Badruzzaman et al, 2015). Poultry diseases thrive due to several factors such as climate, geographical position, farm hygiene, biosecurity, immunity status, chick quality, hatcheries, and management practices (Abbas et al, 2015;Badruzzaman et al, 2015;Chakma, 2015;Hassan et al, 2016). Along with species of chickens, production type, age and sex play significant role in disease prevalence (Yunus et al, 2009;Rashid et al, 2013;Talukder et al, 2017;Rahman et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Passive surveillance of clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh

Sabuj¹,

Mahmud²,

Barua³

et al. 2019

Afr. J. Microbiol. Res.

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The present study is aimed at investigating clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh through passive surveillance and to know the frequency distribution of antimicrobial drugs prescription pattern. The study was conducted in Ramu Upazila Government Veterinary Hospital under Cox's Bazar district of Bangladesh from February to March, 2016. A total of 180 cases including 73 broiler, 84 layer, 18 duck and 5 pigeon were included in this study. Diseases were diagnosed based on clinical history, clinical signs, post mortem lesions and rapid kit test. The most prevalent diseases were Newcastle disease (ND) 17.8% (95% CI 12-24%), colibacillosis 11.5% (95% CI 6-17%), infectious bursal disease (IBD) 10.8% (95% CI 6-16%) and aspergillosis 9.6% (95% CI 5-14%) in broiler and layer chickens; duck plague 69.6% (95% CI 49-90%) in duck and pigeon pox 13% (95% CI 0.2-24%) in pigeon. Regarding production type, the prevalence of colibacillosis, IBD and aspergillosis was significantly higher in broiler chickens (17.8, 19.2 and 16.4%) when compared with layer chickens (6.0, 3.6 and 3.6%) (p<0.05). On the contrary, ND and avian influenza (AI) were significantly greater in layer (27.4 and 10.7%) than broiler chickens (6.8 and 1.4%). Within age group, aspergillosis and omphalitis were higher at 1 to 10 days age groups while IBD and ND were greater in older age groups. In layer chickens, the prevalence of ND, AI, salmonellosis and fowl cholera were recorded higher in number between the ages of 9 and 83 weeks. Among the antibiotic drugs, ciprofloxacin (46.7%), colistin (42.2%), trimethoprim and sulphur drug (37.8%) were mostly prescribed to treat the diseases. Poor biosecurity practices and lack of appropriate laboratory diagnostic facilities are associated with these disease distributions in the study area. Strict biosecurity and continuous surveillance program can minimize the disease prevalence.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Passive surveillance of clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh

Sabuj¹,

Mahmud²,

Barua³

et al. 2019

Afr. J. Microbiol. Res.

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“…Since its discovery by Cosgrove (1962), infectious bursal disease (IBD), caused by infectious bursal disease virus (IBDV), has continued to plague the poultry industry worldwide. The disease is acute, highly contagious and affects chickens aged 3-6 weeks, causing severe immunosuppression in infected chickens below 3 weeks of age (Chakman, 2015). Though, evidences of outbreaks in older chickens have been documented (Okoye and Uzoukwu, 1981;Shekaro and Josiah, 2015).…”

Section: Introductionmentioning

confidence: 99%

Continuous circulation and mutation at the hypervariable region of the VP2 gene of very virulent infectious bursal disease virus in Nigeria

Nwagbo¹,

Shittu²,

Qasim³

et al. 2018

Nig. Vet. J.

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Infectious bursal disease (IBD) is a highly contagious viral disease of poultry with huge economic consequences. First reported in Nigeria in 1973, the disease has since become endemic across the country. Inspite of routine vaccine administration, outbreaks are frequently reported in vaccinated flocks which questions the effectiveness of the vaccine to confer adequate protection against the circulating strains of the virus. In this study, suspected IBD outbreaks from 9 poultry farms spanning 2015-2016 were investigated. The hypervariable region (HVR) of the VP2 gene of infectious bursal disease virus (IBDV) from these outbreaks was sequenced. Based on the phylogenetic tree and deduced amino acid sequences, the viruses clustered with African very virulent (vv) types (VV2-1) with markers typical for vvIBDV at positions 222A, 242I, 256I, 294I and 299S. Also, unique substitutions were identified at the hydrophilic peak A (215Q→P) and minor peak 2 (280N→Y) in addition to that previously unreported at position 308I→L. These results demonstrate continuous circulation and mutations at the HVR of the VP2 which underscores the need for constant monitoring of IBDV in Nigerian poultry. Further study is required to establish the biological function(s) of these mutations on the pathogenicity and antigenicity of the virus.

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“…The endemicity of IBD among viral diseases of chickens in Maiduguri (with Newcastle disease) in 1995-2000 was previously reported; the viral diseases were 69.9% of all disease outbreaks in chicken farms(Ambali et al, 2003).Our data showed that IBD outbreaks occurred more frequently among Noiler chickens (25.0%) and exotic cockerels (17.5%) than broilers (7.2%), layers (7.2%) and the local or village chickens (9.1%), indicating that chicken type signi cantly affected outbreak prevalence. The lighter breeds of chicken are reported to be more susceptible to IBD than the heavy breeds; layers are affected more than broilers(Okoye et al, 1999;, 2010;Chakma, 2015;Kundu et 2018) since the chickens would be protected by maternal antibodies against IBDV; however, lack of maternal antibodies could reduce the age of chickens susceptible to the disease, in contrast to the highest susceptibility to IBDV infection at 4-5 weeks of age when maternal antibodies, available from day old have decayed with age(Panisup et al, 1984). Most IBD outbreaks were reported at 3-5 weeks(Mbuko et al., 2010), 3-4 weeks (Mor et al, 2010; Chakma, 2015; Kundu et al, 2018), or 3-6 weeks…”

mentioning

confidence: 99%

Outbreaks of acute infectious bursal disease of chickens in Maiduguri, Nigeria (2008-2018): retrospective survey

Badau

Igbokwe

Hassan

et al. 2023

Preprint

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Acute infectious bursal disease (IBD) outbreak caused by virulent IBD virus undermines profitable chicken production in Nigeria. Veterinary clinic-based passive surveillance is carried out by postmortem diagnosis of clinical cases submitted during disease outbreaks. Records of IBD outbreaks from two veterinary hospitals in Maiduguri, Nigeria, were extracted among all disease outbreaks in chicken flocks in the period 2008-2018. Data showed that IBD outbreaks occurred in 493 (7.6%, [95% CI: 7.0-8.3%]) out of 6,486 disease outbreaks in chicken flocks within the period. The year-specific prevalence of outbreaks varied from 1.6% (95% CI: 0.9-2.3%) to 17.3% (95% CI: 12.9-21.7%) and fitted a linear trend (r = -0.73; P<0.01) over the years, with significant (P<0.001) association with the years. The chicken-type-specific prevalence varied significantly (P < 0.05) with 25.0% in Noilers (dual-purpose), 7.2% in broilers, 7.1% in layers, 9.1% in local chickens (9.1%) and 17.4% in exotic cockerels. The ages of chickens at the time of outbreaks were 2-27 weeks; modal age was 4-5 weeks while mean age was 5.0±1.7 weeks. The mortality rate was 12.6% (95% CI: 5.9-16.2) out of total flock size of 38,485 in 2015-2018. Specific lesions for diagnosis of acute IBD during surveillance were acute exudative inflammatory swelling of bursa of Fabricius [+/-hemorrhages] (90.9%), along with hemorrhages in thigh, leg and/or breast muscles (72.2%), mucosal hemorrhages at proventriculus-ventriculus junction [+/- enteritis] (24.9%), and nephropathy (7.7%); but few cases lacked bursal swelling (9.1%). Thus, acute IBD outbreak in chickens was endemic with time-related risk factors unaccounted for during passive surveillance.

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Epidemiology of infectious bursal disease in broiler birds of three districts in Bangladesh

Cited by 7 publications

References 24 publications

Passive surveillance of clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh

Passive surveillance of clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh

Continuous circulation and mutation at the hypervariable region of the VP2 gene of very virulent infectious bursal disease virus in Nigeria

Outbreaks of acute infectious bursal disease of chickens in Maiduguri, Nigeria (2008-2018): retrospective survey

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