E.F. Muchanga
Faculdade de Veterinaria, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
E.R.C. Frechaut
Faculdade de Veterinaria, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
P. Taunde
Faculdade de Veterinaria, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
O. Nhambirre
Centro de Biotecnologia, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
A.M. Junior
Faculdade de Veterinaria, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
C.G. Bila
Faculdade de Veterinaria, Universidade Eduardo Mondlane, Av. De Mocambique Km 1.5, Maputo-Mozambique
ABSTRACT
Although regularly vaccinated, IBD outbreaks are frequently reported in broiler birds in Mozambique, which may suggest poor immunization. To test this hypothesis, this study aimed to detect maternally derived antibodies titers in commercial unvaccinated 1-d-old chicks and to evaluate humoral immune status of vaccinated adult chicken broilers against IBD virus from Matola and Maputo regions. Serum samples were collected from unvaccinated broiler day-old chicks (n = 250) and vaccinated adult broiler chicken (n = 300). A commercial ELISA kit was used to determine the titer of mAb. Our results revealed that one day old chicks presented high protective antibodies titers and good and low coefficient of variation (CV), which indicated optimal maternal immunity transfer. Only 28% of adult broiler serum samples had protective antibody titers and more than 1/3 were seronegative. In addition, as little as 27% of analyzed flocks were considered protected against IBD virus. Taken together, this data suggest that, unlike what has been found in 1-d-old chicks, the evaluated adult broiler poultry population were susceptible to IBDV, which may explain the frequently outbreaks reported in those regions.
PDF References Citation
How to cite this article
E.F. Muchanga, E.R.C. Frechaut, P. Taunde, O. Nhambirre, A.M. Junior and C.G. Bila, 2015. Vaccination Against Infectious Bursal Disease Virus (IBDV) in Broiler Birds in Mozambique: Are We Doing Enough?. International Journal of Poultry Science, 14: 644-646.
DOI: 10.3923/ijps.2015.644.646
URL: https://scialert.net/abstract/?doi=ijps.2015.644.646
DOI: 10.3923/ijps.2015.644.646
URL: https://scialert.net/abstract/?doi=ijps.2015.644.646
REFERENCES
- Besseboua, O., A. Ayad and H. Benbarek, 2015. Determination of the optimal time of vaccination against infectious bursal disease virus (Gumboro) in Algeria: Original research. Onderstepoort J. Vet. Res., 82: 1-6.
CrossRefDirect Link - Da Silva, P.S., T.S. Sales, I.R. da Luz, P.C.C. Maia, L.M.B. Fernandes and C.O. Mendes, 2012. [Antibodies anti-Infectious Bursal Disease virus and viral genome detection in broilers and chickens backyard at Bahia's poultry production area]. Ciencia Rural, 42: 1044-1050.
CrossRefDirect Link - Flensburg, M.F., A.K. Ersboll and P.H. Jorgensen, 2002. Risk factors associated with the introduction of acute clinical infectious bursal disease among Danish broiler chickens in 1998. Avian Pathol., 31: 23-29.
CrossRefDirect Link - Fussell, L.W., 1998. Poultry industry strategies for control of Immunosuppressive diseases. Poult. Sci., 77: 1193-1196.
CrossRefDirect Link - Giambrone, J.J., T. Dormitorio, T. Brown and K. Takeshita, 1999. Monitoring the immune status of broiler breeders against infectious bursal disease virus using progeny challenge and serologic data. J. Applied Poult. Res., 8: 362-367.
CrossRefDirect Link - Hirai, K., E. Kawamoto and S. Shimkrura, 1974. Some properties of precipitating antigens associated with infectious bursal disease virus. Infect. Immun., 10: 1235-1240.
PubMedDirect Link - Sharma, J.M., I.J. Kim, S. Rautenschlein and H.Y. Yeh, 2000. Infectious bursal disease virus of chickens: Pathogenesis and immunosuppression. Dev. Comp. Immunol., 24: 223-235.
CrossRefPubMedDirect Link - Sil, G.C., P.M. Das, M.R. Islam and M.M. Rahman, 2002. Management and disease problems of cockerels in some farms of Mymensingh, Bangladesh. Int. J. Poult. Sci., 1: 102-105.
CrossRefDirect Link - Van den Berg, T.P., 2000. Acute infectious bursal disease in poultry: A review. Avian Pathol., 29: 175-194.
CrossRefDirect Link - Vui, T.Q., J.E. Lohr, M.N. Kyule, K.H. Zessin and M.P.O. Baumann, 2002. Antibody levels against newcastle disease virus, infectious bursal disease virus and avian influenza virus in rural chickens in Viet Nam. Int. J. Poult. Sci., 1: 127-132.
CrossRefDirect Link - Brentano, L., B.G. Silva, S. Sayd and S.W. Flores, 2000. Antibodies to Chicken Anemia Virus (CAV) in broiler breeder flocks in Brazil. Rev. Bras. Cienc. Avic., 2: 157-179.
CrossRefDirect Link