EFFECTS OF SOME COMMERCIAL DISINFECTANTS ON AEROBIC BACTERIA ASSOCIATED WITH DEAD-INSHELL CHICKEN EMBRYOS IN KADUNA STATE, NIGERIA

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dc.contributor.authorMAMMAN, Paul Habila
dc.date.accessioned2021-06-17T08:28:59Z
dc.date.available2021-06-17T08:28:59Z
dc.date.issued2007-03
dc.descriptionA THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIRMENTS FOR THE AWARD OF THE DEGREE OF MASTER OF SCIENCE IN THE DEPARTMENT OF VETERINARY PUBLIC HEALTH AND PREVENTIVE MEDICINE, FACULTY OF VETERINARY MEDICINE, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIAen_US
dc.description.abstractThe demand for poultry products in Nigeria is on the increase. Losses in the chicken „factory‟ (hatchery) are associated with embryonic mortality which in turn may result from non-specific bacterial infections of incubated eggs. This study was therefore set out to investigate the likely bacteria that may be responsible for these losses in commercial hatcheries in Kaduna State, Nigeria with the aim of suggesting possible control measures. Six hundred (600) dead-in-shell chicken embryos from these hatcheries were sampled and cultured individually following recommended laboratory procedures for culture, isolation and identification of bacteria. From these samples, 62 (54.9 %) isolates of Escherichia coli and 21 (18.6 %) isolates of Proteus spp were recovered. Other isolates were Pseudomonas spp 6 (5.3 %), Staphylococcus aureus 11 (9.7 %), Staphylococcus spp 8 (7.1 %) and Micrococcus spp 5 (4.4 %). The various hatcheries investigated recorded 8- 30 % losses of eggs at each completed incubation process and this was mainly as a result of death of the embryos in the shells. A high incidence of pathogenic strains of bacteria from these dead-in-shell chicken embryos was observed. This is suggestive of the fact that these isolates may have contributed to the embryonic mortality and reduced hatchability recorded in the farms investigated. On these isolates, the minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and kill-time of two commonly used and one relatively new disinfectants were determined. The two commonly used disinfectants were Purit® and Z-germicide®; the new one was carcil®. The results revealed that purit® was most effective against E. coli since it required the lowest concentration of 0.00026% for 1 minute to kill the bacteria. Z-germicide® was found to be effective at 0.00063% for 5 minutes and carcil® required 0.0031% for 10 seconds. Purit® was also found to be the most effective of the three disinfectants on Pseudomonas spp but Z-germicide® showed the best results on Proteus spp.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/12458
dc.language.isoenen_US
dc.subjectEFFECTS,en_US
dc.subjectCOMMERCIAL DISINFECTANTS,en_US
dc.subjectAEROBIC BACTERIA ASSOCIATED,en_US
dc.subjectDEAD-IN INSHELL CHICKEN EMBRYOS,en_US
dc.subjectKADUNA STATE,en_US
dc.subjectNIGERIA.en_US
dc.titleEFFECTS OF SOME COMMERCIAL DISINFECTANTS ON AEROBIC BACTERIA ASSOCIATED WITH DEAD-INSHELL CHICKEN EMBRYOS IN KADUNA STATE, NIGERIAen_US
dc.typeThesisen_US
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