Serological Survey of Avian Metapneumovirus Infection in Chickens in Bangladesh

Ali, Zulfekar; Park, Jung-Eun; Shin, Hyun-Jin

doi:10.3382/japr/pfz050

Cited by 14 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They stated a combination of live rHVT-H5 and inactivated Egy-flu 1 (bears AIV H5N1) was best vaccine compared to single vaccine of rHVT-H5. The results also showed concordance with the experiment of other researchers (22) and they delineated the use of rHVT-H5 at first day of age and boosting vaccination by inactivated H5N1 after 10 days which gave better protection and HI titer compared to unvaccinated birds or vaccinated by rHVT-H5 alone in broiler chickens (23)(24)(25).…”

Section: Discussionsupporting

confidence: 89%

Combined usage of rHVT-H5 and Re-6 vaccines towards an effective avian influenza vaccination program for commercial layer chickens

Ali

2020

S.J. Microbiol.

Self Cite

View full text Add to dashboard Cite

Vaccination against highly pathogenic avian influenza virus (HPAIV) of subtype H5N1 is one of the possible means to protect chickens against its outbreak in endemic countries. Early vaccination of layer birds with recombinant vector vaccine based on turkey herpesvirus expressing H5 gene (rHVT-H5) provides longer protection while inactivated vaccine Re-6 needs multiple booster doses to achieve continuous antibody titer. Therefore, this study was carried out to offer a vaccination program using live rHVT-H5 and inactivated Re-6 vaccines in field condition. For this trial, five ISA brown commercial layer chicken farms were raised with 500 birds per farm. Two licensed vaccines- rHVT-H5 and Re-6 in Bangladesh were used for this trial where birds in farms 1 and 2 were administered only rHVT-H5 vaccine at one-day-old, and farms 3 and 4 rHVT-H5 vaccine at one-day-old then boosted with Re-6 vaccine at 25 weeks of age. Farm 5 was not vaccinated and functioned as control. Blood samples were randomly collected from 20 birds in each farm at 3-week interval from 2 weeks old till 65 weeks and harvested serum analyzed by haemagglutination inhibition (HI) test for antibodies against HPAIV H5N1. The titer of haemagglutination inhibiting antibodies against AIV H5N1 on farms 3 and 4 was considerably high and remained up to 65 weeks. However, in farm 1 and 2 there was decline in antibody titer after 56 weeks of age. This study demonstrated that the combined use of rHVT-H5 vaccine at one-day-old and Re-6 at 25 weeks of age enhanced a longer lasting protective antibody against circulating HPAIV H5N1 in commercial layer chickens in Bangladesh. Stamford Journal of Microbiology, Vol.10 (1) 2020: 9-11

show abstract

Section: Discussionsupporting

confidence: 89%

Combined usage of rHVT-H5 and Re-6 vaccines towards an effective avian influenza vaccination program for commercial layer chickens

Ali

2020

S.J. Microbiol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Interestingly, no samples were found positive against ART virus in case of broiler but 12% were recorded in sonali birds. The past seroprevalence study of ART in Bangladesh found overall 53.29% chickens including 35.57% sonali and 50.85% layer chickens [8]. On the contrary, Sharma et al [24] found the higher number of ART positive sample 31.7% in broiler flocks in Grenada, West Indies.…”

Section: Discussionmentioning

confidence: 95%

“…ART virus is also known as avian pneumovirus (APV), important respiratory viral disease affecting both chickens and turkeys [7]. ART was first identified in Bangladesh at 2016 by Ali et al [8] in broiler breeder, layer, and Sonali chicken (cross-breed between Rhode Island Red cocks and Fayoumi hens). Sneezing, depression, coughing tracheal rales, swollen infraorbital sinus, ocular and nasal discharges, and foamy conjunctivitis are the major signs associated with the disease [9].…”

Section: Introductionmentioning

confidence: 99%

Seroprevalence of major avian respiratory diseases in broiler and sonali chicken in selected areas of Bangladesh

Ali

Mm³

et al. 2019

J Adv Vet Anim Res

View full text Add to dashboard Cite

How to cite: Bhuiyan ZA, Ali MZ, Moula MM, Bary MA, Arefin N, Giasuddin M, et al. Seroprevalence of major avian respiratory diseases in broiler and sonali chicken in selected areas of Bangladesh. J Adv Vet Anim Res 2019; 6(4): ABSTRACTObjective: This study was conducted to investigate different respiratory diseases in broiler and sonali birds in some selected districts of Bangladesh. Materials and Methods:We were collected a total of 460 blood samples from 46 farms with 36 broiler farms and 10 sonali farms (cross-breed) from 2015 to 2017. All the collected serum samples were tested for determining specific antibodies of avian rhinotracheitis (ART) virus, infectious laryngotracheitis (ILT) virus, infectious bronchitis (IBV) virus, and Ornithobacterium rhinotracheale (ORT) infection using commercially available enzyme-linked immunosorbent assay kits. Results: The overall seropositivity was highest in ORT (45.9%), followed by IBV (37.6%), ART (2.6%), and ILT (0.4%). Out of 360 broiler samples, highest seropositivity was recorded in ORT (43.3%) and lowest in IBV (31.4%). Surprisingly, no broiler samples were found positive for ART and ILT. In case of sonali, the seropositivity was highest in IBV (60%) and lowest in ILT (2%). With respect to types of birds and age groups, the seropositive percentage of all four pathogens was found higher in sonali than broiler. Between two age groups of sonali, the seropositive percentage of ART (12%), ORT (55%), ILT (2%), and IBV (60%) was highest at 21-60 weeks of age compared to 5-20 weeks of age. However, based on location, the seropositive of ORT and IBV was highest in Jamalpur (63.3%) and Fulbariya and Trishal (50%) and lowest in Sreepur (16.7%) and Jamalpur (3.3%). Conclusion:The four pathogens are ubiquitous in nature for the sonali chickens, and the prevalence of ORT and IBV was the most prevalent viruses in the study areas. This study indicates a need for improved surveillance and characterization of ORT and ART circulating in all types of poultry in Bangladesh. ARTICLE HISTORY

show abstract

“…The breeding policy was also traditional and nonsystematic [ 36 ]. Other avian viral diseases like infectious bronchitis, avian metapneumovirus, and reticuloendotheliosis virus reported a higher prevalence in selected areas of Bangladesh [ 38 – 40 ]. Therefore, Sonali acts as a potential spreader and harbors AIV infection compared to the other poultry flocks.…”

Section: Discussionmentioning

confidence: 99%

Potential risk factors of avian influenza virus infection in asymptomatic commercial chicken flocks in selected areas of Bangladesh during 2019

Ali¹,

Hasan²,

Giasuddin³

2021

J Adv Vet Anim Res

View full text Add to dashboard Cite

Objective: Avian influenza is a zoonotic disease with a pandemic potential that can infect avian and mammalian species, including humans. Studies aimed at investigating avian influenza virus (AIV) status in asymptomatic chickens and their shedding are uncommon in Bangladesh. Therefore, the current study aimed to examine the distribution of AIV subtypes in asymptomatic commercial chicken flocks and to identify the possible risk factors associated with this infection in two selected sub-districts of Bangladesh. Materials and Methods: A total of 582 oropharyngeal swabs were collected from 23 chicken farms during 2019 and evaluated for the presence of AIV and its subtypes by real-time reverse transcription PCR assays. Risk factors associated with AIV infection were analyzed from questionnaire data. Results: Overall, AIV prevalence was 7.73% ( n = 45) with 7.39% and 7.92% in Dhamrai and Gazipur Sadar sub-districts, respectively. In AIV-positive samples, the prevalence of A/H5N1, A/H5N2, A/H9N1, and A/H9N2 was 31.11%, 28.89%, 6.67%, and 8.89%, respectively. None of the samples were positive for N6 and N8. The odds ratio (OR) of AIV infection was 1.15 in broiler versus layer and 2 in Sonali versus layer chickens. The OR was 1.95 for medium versus small, 2.6 for large versus small flock size, 1.5 for moderate versus good biosecurity, and 2.92 for poor versus good biosecurity practicing farms. Conclusion: The results demonstrated that A/H5N1, A/H5N2, A/H9N1, and A/H9N2 are circulating in asymptomatic chickens of selected areas. Strict farm biosecurity practices and avoiding higher flock density are recommended to prevent AIV spread in the study.

show abstract

Serological Survey of Avian Metapneumovirus Infection in Chickens in Bangladesh

Cited by 14 publications

References 24 publications

Combined usage of rHVT-H5 and Re-6 vaccines towards an effective avian influenza vaccination program for commercial layer chickens

Combined usage of rHVT-H5 and Re-6 vaccines towards an effective avian influenza vaccination program for commercial layer chickens

Seroprevalence of major avian respiratory diseases in broiler and sonali chicken in selected areas of Bangladesh

Potential risk factors of avian influenza virus infection in asymptomatic commercial chicken flocks in selected areas of Bangladesh during 2019

Contact Info

Product

Resources

About