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31.
O D Olaleye S A Omilabu E N Ilomechina A H Fagbami 《Comparative immunology, microbiology and infectious diseases》1990,13(1):35-39
A survey for West Nile Virus (WNV) haemagglutination-inhibition (HI) antibody was carried out in humans and domestic animals. Human sera were collected from Ibadan, while the animal sera were collected from both Ibadan and Maiduguri. Out of 304 human sera tested, 123 were positive (40%). There was a higher prevalence of HI antibody in adults than children. Sex distribution of positive sera showed that 37% of males and 43% of females had WNV HI antibody. There was no significant difference in the prevalence of HI antibody in both sexes. On the 123 WNV HI positive sera tested, 104 (85%) and 78 (75%) had yellow fever and Potiskum HI antibody respectively. Monotypic WNV virus reactions were frequently found in children while polytypic reactions were frequently found in adults. A total of 200 animal sera were examined, 50 camels, 50 goats, 49 cattle and 51 sheep. The highest prevalence of HI antibody was found in camels (26%), followed by sheep (20%). Percentage of positive sera in other species were: goat (18%) and cattle (6%). Of the 35 WNV HI positive animal sera, 26 and 20% reacted with Yellow fever and Potiskum virus antigens respectively. 相似文献
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Cytomegalovirus infection among tuberculosis patients in a chest hospital in Nigeria 总被引:1,自引:0,他引:1
O D Olaleye S A Omilabu S S Baba 《Comparative immunology, microbiology and infectious diseases》1990,13(2):101-106
A serological study was carried out in Ibadan, Nigeria to determine the prevalence of inapparent infection with cytomegalovirus among tuberculosis patients and its relation to the epidemiology of the virus in this environment. A total of 360 sera from 161 tuberculosis patients, 89 patients other than tuberculosis and 110 healthy voluntary blood donors were examined for antibody to cytomegalovirus by the complement fixation test. One hundred and forty-one (87.6%) of the tuberculosis patients, 45 (50.6%) patients other than tuberculosis and 60 (54.6%) healthy blood donors had a complement fixing antibody to cytomegalovirus. Although the total prevalence (68.3%) of complement fixing antibody against cytomegalovirus in all the groups is high, it is higher among the tuberculosis patients than the other groups in the same environment. This shows that tuberculosis which is still a major health problem in Nigeria may be playing a significant role in the spread of cytomegalovirus in the country. 相似文献
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Oluwayelu DO Todd D Ball NW Scott AN Oladele OA Emikpe BO Fagbohun OA Owoade AA Olaleye OD 《Avian diseases》2005,49(3):446-450
Chicken anemia virus (CAV) was isolated for the first time from the Nigerian chicken population. The virus was recovered from necropsied birds from broiler and pullet flocks that suffered disease outbreaks tentatively diagnosed as infectious bursal disease. A sensitive polymerase chain reaction (PCR) assay detected CAV DNA in tissues of necropsied birds. Restriction endonuclease analysis performed with the 733-bp PCR product and the Cfo I enzyme indicated at least two different CAVs were circulating among the Nigerian chicken population. Four isolates were obtained from pooled liver and thymus tissues using the MDCC-MSB1 cell line. These isolates were found to be antigenically closely related to the Cuxhaven-1 (Cux-1) reference strain of CAV when reacted with four monoclonal antibodies prepared against the Cux-1 virus. One of the isolates (isolate A) induced thymus atrophy, bone marrow aplasia, and low hematocrit values when inoculated into 1-day-old specific-pathogen-free chickens. These findings not only demonstrate that CAV is present in Nigeria, but they also likely represent the first cell culture isolation of the virus in Africa. 相似文献
35.
Influence of fibre on metabolisable energy of diet and performance of growing pullets in the Tropics
1. Diets in which maize and palm kernel meals were major ingredients and whose metabolisable energy values were varied by the inclusion of graded amounts of maize cob (50 to 200 g/kg diet) were fed to growing pullets for 9 to 21 weeks of age. 2. Apparent metabolisable energy decreased from 11.82 to 9.79 MJ/kg diet as neutral detergent fibre increased from 182 to 330 g/kg. 3. Metabolisable energy intake was significantly reduced when the maize cob content was above 100 g/kg diet. 4. Protein intake was unaffected by treatment but apparent nitrogen retention was significantly depressed for pullets receiving the diet with 200 g/kg maize cob. Birds on the diet did not come into lay during the study. 相似文献
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Muraina Issa A. Gotep Jurbe G. Tanko James T. Onyiche ThankGod E. Aladelokun Oladimeji B. Dapuliga Christiana C. Forcados Gilead E. Ozele Nonyelim Samuel Ann L. Oladipo Olusola O. Akanbi Olatunde B. Okewole Philip A. Ahmed Mohammed S. 《Tropical animal health and production》2020,52(3):1249-1255
Tropical Animal Health and Production - Graded concentrations (200, 400 and 800 mg/kg) of the aqueous stem bark extract of Khaya senegalensis was evaluated for its therapeutic efficacy... 相似文献
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Jingjing PENG Olatunde OLADELE Xiaotong SONG Xiaotang JU Zhongjun JIA Hangwei HU Xuejun LIU Shuikuan BEI Anhui GE Limei ZHANG Zhenling CUI 《农业科学与工程前沿(英文版)》2022,9(3):333
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Brilliant O Agaviezor Sunday O Peters Mufliat A Adefenwa Abdulmojeed Yakubu Olufunmilayo A Adebambo Michael O Ozoje Christian ON Ikeobi Matthew Wheto Oyeyemi O Ajayi Samuel A Amusan Oludotun J Ekundayo Timothy M Sanni Moses Okpeku Gbolabo O Onasanya Marcos De Donato Babatunde M Ilori Kadir Kizilkaya Ikhide G Imumorin 《畜牧与生物技术杂志(英文版)》2013,(1):18-33
Background: Sheep is important in the socio-economic lives of people around the world. It is estimated that more than half of our once common livestock breeds are now endangered. Since genetic characterization of Nigerian sheep is still lacking, we analyzed ten morphological traits on 402 animals and 15 microsatellite DNA markers in 384 animals of the 4 Nigerian sheep breeds to better understand genetic diversity for breeding management and germplasm conservation. Results: Morphological traits of Uda and Balami were significantly (P < 0.05) higher than Yankasa, which were both higher than West African Dwarf (WAD) sheep. Stepwise discriminant analysis showed tail length, rump height, chest girth, ear length and chest depth as the most discriminating variables for classification. Mahalanobis distances show the least differentiation between Uda and Balami and the largest between WAD and Balami sheep. While 93.3% of WAD sheep were correctly assigned to their source genetic group, 63.9% of Yankasa, 61.2% of Balami and 45.2% of Uda were classified correctly by nearest neighbour discriminant analysis. The overall high Polymorphism Information Content (PIC) of all microsatellite markers ranged from 0.751 to 0.927 supporting their use in genetic characterization. Expected heterozygosity was high for all loci (0.783 to 0.93). Mean heterozygote deficiency across all populations (0.171 to 0.534) possibly indicate significant inbreeding (P < 0.05). Mean values for FST , FIT and FIS statistics across all loci were 0.088, 0.394 and 0.336 respectively. Yankasa and Balami are the most closely related breeds (DA = 0.184) while WAD and Balami are the farthest apart breeds (DA = 0.665), which is coincident with distance based on morphological analysis and population structure assessed by STRUCTURE. Conclusions: These results suggest that within-breed genetic variation in Nigerian sheep is higher than between-breeds and may be a valuable tool for genetic improvement and conservation. The higher genetic variability in Yankasa suggests the presence of unique ancestral alleles reflecting the presence of certain functional genes which may result in better adaptability in more agro-ecological zones of Nigeria. These genetic characteristics are potentially useful in planning improvement and conservation strategies in Nigerian indigenous sheep. 相似文献