Abstract
A study was conducted at Ido and Atiba Local Government Areas (LGAs) of Oyo State, Nigeria, to investigate the prevalence of Newcastle disease (ND) using Enzyme Linked Immunosorbent Assay (ELISA) techniques. A total of 376 normal feathered local chickens were sampled by collecting 2 ml of blood from each bird. Sera that emanated from them were subjected to detection of ND antibodies using ELISA test kit. The data collected were analyzed by inferential statistics. The results showed that the prevalence of ND as 11.70% and 15.43% at Ido and Atiba LGAs, respectively. Adult males showed higher prevalence as compared to adult females in the two LGAs. Meanwhile the prevalence of ND in adults was higher than in the young in Ido but the reverse at Atiba LGA. Combined prevalence was averaged at 13.56% in the two LGAs. The combined results further showed that males (8.24%) were more susceptible to ND than females (5.32%) just like adults (7.45%) were more susceptible than the growers (6.11%). It can be concluded that ND is prevalent in the study areas. It can therefore be recommended that vaccination of local chickens should be vigorously implemented since they are in the common environment/space with intensively managed birds to avert cross infection.
 Key words: antibodies, ELISA, local chickens, Newcastle disease, prevalence
Highlights
Poultry production is the fastest growing component of global meat production in developing and transitional countries (Assa, 2012)
Prevelance of ND at Ido and Atiba Local Government Areas (LGAs) Table 1 shows the prevalence of Newcastle disease (ND) at various villages of Ido LGA comprising Bakatari, Eleso and Olosun villages
The results further revealed that in Ido LGA, adult males (4.26%) had the highest prevalence of the virus followed by adult females (3.72%), grower males (2.13%) and the least was grower females (1.59%)
Summary
Poultry production is the fastest growing component of global meat production in developing and transitional countries (Assa, 2012). Sero-Prevalence of Newcastle Disease in Normal Feathered Local Chickens in Oyo State Nigeria 38 virulent (lentogenic). It is known that vaccination of poultry provides an excellent means to lessen clinical signs of infection caused by this virus (Alexander, 2003; Senne et al, 2004; Kapczynski and King, 2005). It has been known for a long time that vaccination itself (with live vaccines based on non-virulent virus strains) may cause disease and reduced growth in vaccinated birds (Alexander, 2003). This work was designed to investigate the prevalence of ND in the study areas with the aid of ELISA kit
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