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Articles by O.J. Ibu
Total Records ( 4 ) for O.J. Ibu
  Sunday Blessing Oladele , Ishiaku Enoch , Sa`idu Lawal and O.J. Ibu
  Experiments were performed to determine whether Japanese quails (Coturnix coturnix japonica) are susceptible to Newcastle disease virus (NDV) Kudu 113 strain. In the experimental trials, a total 119, six weeks old Japanese quails were administered varying doses of the virus, ranging from 0.1 ml to 0.3 ml intramuscularly (im) and per os (po). The uninfected control quails were not administered the virus and were reared separately. Depression, weakness, incoordination, anorexia, ruffled feathers and paralysis of legs and wings were noted in some of the infected quails. At necropsy, some of the infected quails also had haemorrhagic enteritis and congested lungs, liver, heart and spleen and muscles of breast, thighs and legs. There was a rise in haemagglutination inhibition (HI) antibody titre in all the infected quails, following administration of NDV Kudu 113 strain either im or po. The highest mean HI antibody titre of log2 10.56± 0.29 was obtained on day seven post infection (pi) in the group that was administered 0.3 ml of the virus im. Similarly, the highest mean HI antibody titre of log2 9.89±0.48 was obtained on day seven pi in quails that were administered 0.3 ml of the virus po. On the other hand, the control quails were negative to HI antibody test. This study demonstrated that Japanese quails are susceptible to NDV Kudu 113 strain.
  S.B. Oladele , M. Morou , S.J. Sambo and O.J. Ibu
  Comparative studies of packed cell volume (PCV), haemoglobin (HB), total protein (TP), haemagglutination inhibition (HI) antibodies and rectal temperature (RT) were carried out on a total of 50 pigeons (Columbia livia) that were administered Newcastle disease virus (NDV) Kudu 113 strain through different routes. Fifteen pigeons were administered 0.2 mL each of NDV Kudu 113 strain per os (po), 15 pigeons were inoculated with 0.2 mL of the virus intramuscularly (im), another 15 pigeons were sprayed with about 0.2 mL each of the virus through oculonasal (oc) route, while 15 pigeons served as control. Clinical signs and lesions of Newcastle disease (ND) were observed in some of the infected pigeons. After infection, there was an increase in HI antibodies, reaching the maximum mean values of log2 5.2 ± 0.13, log2 5.3 ± 0.31 and log2 5.0 ± 0.12 in pigeons that were administered NDV Kudu 113 strain through oc, po and im routes, respectively. Similarly, as soon as patent infection was established, the RT continued to rise and attained peak values of 42.31 ± 0.03, 41.94 ± 0.06 and 42.18 ± 0.06 °C in pigeons that were administered the virus through po, im and oc routes, respectively. The values of PCV, HB, TP, HI and RT for the control pigeons were relatively constant, while the corresponding values in the infected pigeons fluctuated widely, depending on the route of administration of the virus. It was concluded that vital blood and body parameters, such as PCV, HB, TP, HI and RT were altered during infection of pigeons with NDV Kudu 113 strain.
  O.J. Ibu , J.O.A. Okoye , E.P. Adulugba , K.F. Chah , S.V.O. Shoyinka , E. Salihu , A.A. Chukwuedo and S.S. Baba
  Newcastle disease (ND) is an acute rapidly spreading, contagious, nervous and respiratory disease of domestic and wild birds caused by the Avian Paramxyovirus 1, the Newcastle disease (ND) virus. ND is endemic in Nigeria. The reservoir status of wild and captive birds for ND virus in central Nigeria is assessed in this study. Cloacal swabs were taken from one hundred and sixty three birds caught from five Local Government Council areas of Plateau, Benue and Kaduna States in central Nigeria. A total of thirteen ND Viruses were isolated from the three States. Viz: 8 isolates from Plateau, 4 from Benue and 1 from Kaduna State. One hundred and fifty three of the birds sampled belonged to 30 avian species in 10 Orders while ten birds were unidentified. Only 7% of the species in three Orders yielded ND viruses. The 13 isolates were characterized using the Mean death time of the Minimum lethal dose (MTD/MLD); Intracerebral Pathogenicity index (ICPI) Intravenous Pathogenicity index (IVPI) and the Reverse transcriptase polymerase chain reaction (RT/PCR). The results show that 12 of the isolates were of the lento genic strain while 1 isolate belonged to the Merogenic strain. The implication of these findings on the poultry industry in the country is discussed.
  O.J. Ibu , J.O.A. Okoye , S.S. Baba , S.V.O. Soyinka , K.F. Chah , J. Antiabong , D. Eze , E.A. Salihu and S.B. Oladele
  The study was carried out to assess the Haemagglutinin thermostability of Newcastle disease virus isolates obtained from wild birds in three climatically distinct states in central Nigeria. Identification of heat stable ND virus isolates from the locality will provide environmentally friendly thermostable vaccine candidates for rural poultry. The 12 field virus isolates and the 5 vaccine virus strains showed variable degrees of heat stability. Three field isolates each was inactivated in 5 min, three in 10 min and one in 15 min. One isolate was inactivated in 20 min while two and three strains got inactivated in 25 and 30 min respectively. The most thermostable of the field isolates was inactivated in 40 min. A more thermostable clone was subsequently derived from the latter strain as a local vaccine candidate. For the vaccine strains, NDV (I/O) and NDV (K) were inactivated in 20 min while NDV (L) was inactivated in 25 min. The velogenic strain (Herts) was inactivated in 40 min. The two established thermostable strains, NDV4 and NDVI2 were inactivated in 90 min each. The thermostable profile of the field virus strains did not vary with the climatic background of the isolates.
 
 
 
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