Epizootic Newcastle Disease in Local Chickens Reared in South East Savannah Zone of Nigeria

Sero-prevalence of newcastle disease in apparently healthy normal feathered local chickens in Ido and Atiba Local Government Areas, Oyo State, Nigeria

“…These observed differences in ND sero-prevalence showed ecological area variation in NDV activity and may perhaps be a reflection of the impact of environment on the viability and spread of NDV and its epidemiology (Eze and Ike, 2015). It has also been reported that most village chickens in Nigeria are seldom routinely vaccinated against ND using the conventional vaccines (Okwor and Eze, 2011). Therefore, detection of antibodies to ND in apparently healthy chickens might be indicative of natural infection by non-virulent or lentogenic strains of the virus that might not cause clinical diseases but acts like vaccine.…”

A retrospective study on the prevalence and monthly distribution of Newcastle disease in poultry in Bauchi State, Nigeria

“…Increase in the prevalence of ND during these periods had also been observed in other states of Nigeria and had been associated with cold stress and dry harmattan winds (Nwanta et al, 2005;Sa'idu et al, 2006;Okwor & Eze, 2011;Saddiq et al, 2011). A second high peak prevalence of ND reported in May may be due to heat stress that depresses the immunity of chickens making them susceptible to diseases as suggested by Saddiq et al (2011), and Okwor & Eze (2011). Conversely, average cases of ND were lowest in August possibly because farmers had sold off their excess chickens and had left only the breeders to breed chicks in the case of village chickens or are raising another batch of chickens in the case of A strategic vaccination campaign against ND could be undertaken in August, when cases of ND was lowest and before October to January when cases of ND was at its peak; and before the second peak of cases of ND in May.…”

“…Newcastle disease was most likely to occur between the months of October and January which concides with cold season and in May which concides the hot season and beginning of rainy season. Increase in the prevalence of ND during these periods had also been observed in other states of Nigeria and had been associated with cold stress and dry harmattan winds (Nwanta et al, 2005;Sa'idu et al, 2006;Okwor & Eze, 2011;Saddiq et al, 2011). A second high peak prevalence of ND reported in May may be due to heat stress that depresses the immunity of chickens making them susceptible to diseases as suggested by Saddiq et al (2011), and Okwor & Eze (2011).…”

Molecular screening and isolation of Newcastle disease virus from live poultry markets and chickens from commercial poultry farms in Zaria, Kaduna state, Nigeria

“…Haque et al (2010) reported that virus concentration is low in cloacal swabs when compared with other clinical samples, consequently, isolation rate was usually low in cloacal swabs. Okwor and Eze, (2011) found 58 isolates (3.2%) from a total of 1800 samples. However, unlike samples collected from clinically suspected chickens of this study, they sampled from clinically healthy commercial chickens in Nsukka and its environs, Nigeria.…”