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Research Journal of Microbiology
  Year: 2007 | Volume: 2 | Issue: 12 | Page No.: 960-965
DOI: 10.3923/jm.2007.960.965
 
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Effects of Aqueous Leaf Extracts of Psidium guajava on Bacteria Isolated from the Navel of Day-Old Chicks

Y.A. Geidam, H. Usman, M.B. Abubakar and B. Ibrahim

Abstract:
Plants are used widely in the tropics and sub-tropical Africa and Asia for the treatment and cure of various illnesses such as malaria, diarrhoea, burns, gonorrhoea, stomach disorders and other infectious diseases; among which are livestock and poultry related diseases. Present studies on the preliminary phytochemical composition of the leaf of this plant revealed the presence of flavonoids, tannins, saponins, phenols lectins, triterpenes and carotenoids among others. Studies on the swab content from the navel of the day old chicks of both strains (broilers and layers) had revealed the presence of several gram positive and gram negative organisms such as E. coli, Staphylococcus sp., Streptococcus sp., Proteus sp., Klebsiella sp. and Corynaebacterium. The susceptibility tests on the isolated organisms by the extract under study had showed an appreciable dose dependant zone of inhibition ranging from 13-25 mm. The activity of the extract (400 mg mL-1) can be favourably compared with that of the standard antibiotic-Oxytetracycline (10 mg mL-1) particularly between the E. coli and Streptococcus with 25:30 mm and 20:22 mm as inhibition zone respectively where no significant difference was observed. The extract exhibited a highest MIC of 12.5 mg mL-1 against Staphylococcus sp., while concentration of 25.0 mg mL-1 was noted as the MIC values against both E. coli and Streptococcus sp.
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How to cite this article:

Y.A. Geidam, H. Usman, M.B. Abubakar and B. Ibrahim, 2007. Effects of Aqueous Leaf Extracts of Psidium guajava on Bacteria Isolated from the Navel of Day-Old Chicks. Research Journal of Microbiology, 2: 960-965.

DOI: 10.3923/jm.2007.960.965

URL: https://scialert.net/abstract/?doi=jm.2007.960.965

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