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An investigation was carried on bacterial contamination of fertile and infertile poultry eggs. A total of 80 eggs, 40 from each, infertile and fertile (dead-in-shell embryo) were examined. The prevalence of bacterial species in eggs was recorded. From 40 infertile eggs, 14 (35%) were found positive for bacterial species 22 (65%) eggs were determined as negative. Nine different bacterial species were identified from infertile eggs while only 3 species were recognized from fertile eggs. The species identified from the shell samples were Staphylococcus aureus, Bacillus cerecus, Nocardia brasilienesis, Pasteurella gallinarium, Micrococcus; Bacillus subtilis, Citrobacter and Corynebacterium renale and their incidence was 20.6%, 34.4%, 6.8%, 3.4%, 24.13%, 6.8%, 3.4% and 3.4% respectively . The species recognized from the egg white were Staphylococcus aureus, Escherichia coli and Micrococcus, their incidence was recorded as 28.5%, 14.2% and 57.14% respectively. While the species identified from egg yolk were Staphylococcus aureus and Micrococcus and their presence was as 45.45% and 54.54% respectively, the species recognized from fertile eggs were Bacillus subtilis, Staphylococcus aureus and Escherichia coli and their presence in eggs recorded as 47.6, 14.2 and 38% respectively. All the species were tested for their susceptibility to various antibiotics. The highly active drugs against Staphylococcus aureus, Bacillus cerecus, Escherichia coli and Citrobacter species were sulphonamide and chloramphenicol and their sensitivity was recorded as 58.8, 76.4, 58.8 and 57.5% respectively.The antibiotics against Nocardia brasielensis and Pasteurella gallinarium were Sulphonamide and gentamycin + sulphonamide with the sensitivity of 100 and 82.3%. Corynebacterium renale was found susceptible to gentamycin, chloramphenicol and sulphonamide and their activity better than earlier drugs.

Antibiotic sensitivity tests of various micro organisms from poultry eggs