FACULTY OF VETERINARY MEDICINE

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    Prevalence and correlates of influenza-a in piggery workers and pigs in two communities in Lagos, Nigeria
    (2013) Awosanya, E. J.; Ogundipe, G.; Babalobi, O.; Omilabu, S.
    Introduction: Worldwide, three Influenza-A virus subtypes (H1N1, H1N2 and H3N2) in swine are major public health issues. In Nigeria, the existence of these subtypes in pigs has not been well studied. This study aimed at determining the prevalence and correlates of Influenza-A viruses circulating in piggery workers and pigs in Oke-aro and Goshen communities in Lagos, Nigeria. Methods: Nasal swabs were taken from 197 consenting piggery workers and 281 randomly selected pigs to determine the prevalence of Influenza-A (H1, H3, H5) using Reverse Transcriptase Polymerase Chain Reaction test (gene M). An interviewer administered questionnaire was used to collect information on demography, Influenza-A related symptoms experienced, personal hygiene and management practices from the piggery workers. Descriptive statistics was used and chi square test performed at 5% significant level. Results: All piggery workers and pigs' nasal swabs tested negative for Influenza-A viruses, hence, association could not be tested. Mean age of piggery workers was 41 ± 13.6 years and 60% were females. Forty two percent were farm attendants, 38.0% were pig farmers and the rest butchers. Nineteen percent had history of headache; 14.0% had catarrh and cough; 4.0% had sore-throat; 5.0% had diarrhea; while 48.0% had muscle pain at the time of data collection. The mean body temperature for the pig workers was 36.5 ± 0.5 °C. A significant difference (p<0.05) existed among piggery workers who had muscle pains. Conclusion: Piggery workers and pigs in study area were free of Influenza-A (H1, H3, H5) viruses. The current practices of the piggery workers should be encouraged.
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    Diagnosing trichinellosis in pigs slaughtered at a major abattoir in Lagos State Nigeria
    (2014) Uwalaka, E. C.; Adediran, O. A.
    Trichinellosis, an infection caused by the Trichinella spp has been known to occur worldwide affecting almost all species of animals including man. It is an emerging or re- emerging disease in developed and developing countries. This survey was conducted to investigate the prevalence of trichinellosis in domestic pigs slaughtered in Lagos, Nigeria. Nine hundred pig sera were collected at slaughter in an abattoir in Lagos state. The sera samples were stored frozen at the parasitology research laboratory of the department of Veterinary Microbiology and Parasitology, University of Ibadan till used. Post mortem examination was also carried out for 350 carcasses of the 900 from which blood samples were collected using standard procedures. 53 out of the 900 samples collected were seropositive for Trichinella E/S antigen using ELISA kit. No Trichinella cysts were found at postmortem examination. One of the sample positive at serology was negative at postmortem. A total sero- prevalence of 5.89% was obtained, 5.83 % (adults) and 7.65% of growers were positive. There was no serological evidence of trichinellosis in samples (44) collected from weaners. The male pigs had a higher prevalence (6.14%) than the females (5.45%). However, the differences between the ages and the sexes were not statistically significant (P≤ 0.05).This study has been able to provide serological evidence of the presence of trichinellosis in this state and thus the need to carry out proper postmortem examination after slaughter. Also, the absence of cyst at postmortem and the presence of antibodies at serology show that postmortem examination is not enough to screen for Trichinella in slaughtered food animals hence the need for the establishment of diagnostic laboratories at abattoirs in the country