Immunology, health, and disease

T. Sridevi Dhanarani, C. Shankar, J. Park, M. Dexilin, R. Rajesh Kumar, K. Thamaraiselvi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Antibiotic resistance and the mode of transmission were investigated in bacteria isolated from poultry litter. Total aerobic heterotrophic bacteria were screened and identified for their resistance to different antibiotics such as ampicillin, streptomycin, erythromycin, tetracycline, chloramphenicol, kanamycin, tobramycin, and rifampicin. The distribution of bacteria found in the litter was Staphylococcus (29.1%), which was the predominant group, followed by Streptococcus (25%), Micrococcus (20.8%), Escherichia coli (12.5%), Salmonella (8.3%), and Aeromonas (4.1%). Fifty percent of these isolates were susceptible to ampicillin, 57% to erythromycin, 25% to tetracycline, 4% to chloramphenicol, 40% to kanamycin, 75% to streptomycin, 54% to tobramycin, and 4% to rifampicin. Three randomly selected isolates representing Staphylococcus, Streptococcus, and Micrococcus were examined for plasmids, and plasmid-curing and plasmid-induced transformation studies were conducted. Streptococcus and Micrococcus harbored a plasmid of 4.2 and 5.1 kb, respectively, whereas Staphylococcus did not har-bor any plasmids. Plasmids were cured in Streptococcus and Micrococcus at a concentration of 75 and 100 μg/ mL of acridine orange, respectively, and transformation of 4.2- and 5.1-kb plasmids isolated from the Streptococcus and Micrococcus to plasmid-free E. coli DH5α strain was possible. In conjugation experiments, the antibiotic resistance profiles of transconjugant cells were found to be the same as the donors with the exception of Staphylococcus. The results of this study suggest that transformation and conjugation could be an important mechanism for horizontal gene transfer between bacteria in poultry litter. An understanding of the mechanism and magnitude of resistance gene transfer may provide a strategy to reduce the potential for dissemination of these genes.

Original languageEnglish
Pages (from-to)1381-1387
Number of pages7
JournalPoultry Science
Volume88
Issue number7
DOIs
Publication statusPublished - 2009 Jan 1

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immunology
Micrococcus
plasmids
Streptococcus
Staphylococcus
tobramycin
rifampicin
bacteria
erythromycin
kanamycin
ampicillin
poultry manure
chloramphenicol
streptomycin
tetracycline
antibiotic resistance
Escherichia coli
plasmid curing
acridine orange
Aeromonas

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology

Cite this

Sridevi Dhanarani, T., Shankar, C., Park, J., Dexilin, M., Rajesh Kumar, R., & Thamaraiselvi, K. (2009). Immunology, health, and disease. Poultry Science, 88(7), 1381-1387. https://doi.org/10.3382/ps.2008-00327
Sridevi Dhanarani, T. ; Shankar, C. ; Park, J. ; Dexilin, M. ; Rajesh Kumar, R. ; Thamaraiselvi, K. / Immunology, health, and disease. In: Poultry Science. 2009 ; Vol. 88, No. 7. pp. 1381-1387.
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Sridevi Dhanarani, T, Shankar, C, Park, J, Dexilin, M, Rajesh Kumar, R & Thamaraiselvi, K 2009, 'Immunology, health, and disease', Poultry Science, vol. 88, no. 7, pp. 1381-1387. https://doi.org/10.3382/ps.2008-00327

Immunology, health, and disease. / Sridevi Dhanarani, T.; Shankar, C.; Park, J.; Dexilin, M.; Rajesh Kumar, R.; Thamaraiselvi, K.

In: Poultry Science, Vol. 88, No. 7, 01.01.2009, p. 1381-1387.

Research output: Contribution to journalArticle

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Sridevi Dhanarani T, Shankar C, Park J, Dexilin M, Rajesh Kumar R, Thamaraiselvi K. Immunology, health, and disease. Poultry Science. 2009 Jan 1;88(7):1381-1387. https://doi.org/10.3382/ps.2008-00327