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Identification of Bacterial Agents from the Faecal Samples of Diarrhoeic Sheep and Their Antibiotic Sensitivity

Md. Nuruzzaman Munsi
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute,Savar, Dhaka-1341, Bangladesh.

Md. Ershaduzzaman
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

Md. Osman Gani
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

Md. Moinuddin Khanduker
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

Md. Shahin Alam
Goat and Sheep Production Research Division, Bangladesh Livestock Research Institute, Savar, Dhaka-1341, Bangladesh.

Abstract/ Executive Summary:

The current study was carried out to identify the bacterial species in the faecal samples of 20 diarrhoeic sheep and to observe their sensitivity to different antibiotics. This investigation was performed by collecting diarrhoeal samples from the sheep (n=20) under goat and sheep research farm of Bangladesh Livestock Research Institute, Savar, Dhaka, Bangladesh. The average age and body weight of the animals were 25 days and 2.5 kg respectively. Of the bacteria responsible for diarrhoea in case of sheep, Escherichia coli alone was found in 6 samples (30%), Escherichia coli combined with Proteus mirabilis was found in 12 samples (60%), and no bacteria could be detected in 2 of the 20 samples tested. Both the bacteria were highly sensitive to ceftriaxone, and moderately sensitive to ciprofloxacin and gentamicin. It could be stated that ceftriaxone is the antibiotic of first choice for the treatment of diarrhoea in sheep, where Escherichia coli is suspected to be the principal causal agent of diarrhoea.

Keywords: Bacteria, Diarrhoea, Sheep, Antibiotic, Sensitivity

Location: Bacteriological laboratory of Bangladesh Livestock Research Institute

Start Date: 00-08-2010

End Date: 00-05-2011

Program Area: Pest Management

Commodity: Sheep

Objectives:

To identify the bacterial species in the faecal samples of diarrhoeic sheep and to observe their sensitivity to different antibiotics.

Methodology:

This investigation was performed in the bacteriological laboratory of Bangladesh Livestock Research Institute (BLRI) by collecting diarrhoeal samples from the sheep (n=20) in BLRI goat and sheep research farm. The average age and body weight of the animals were 25 days and 2.5 kg, respectively. The duration of the experiment was from August, 2010 to May, 2011. The faecal samples were collected aseptically into stool containers directly from the rectum with the help of small polybags. The collected samples were then allowed for culture in bacteriological media, Gram’s staining and biochemical tests for isolation and identification of the bacterial species. The antibiotic sensitivity test was done by using disc diffusion method. The commercially available antibiotic discs such as, oxytetracycline, gentamicin, amoxycillin, penicillin G, cloxacillin, sulphamethoxazole, streptomycin, ciprofloxacin and ceftriaxone were used to know the sensitivity of Escherichia coli and Proteus mirabilis to these drugs.

Source of Information: Research in Agric. Livest. Fish.Vol. 2, No. 3, December 2015: 453-457, (ISSN : P-2409-0603, E-2409-9325)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In conclusion, it might be stated that ceftriaxone is the antibiotic of first choice, and ciprofloxacin and gentamicin are the antibiotics of second choice to be used for the treatment of diarrhoea in sheep, where Escherichia coli is suspected to be principal causal agent of diarrhoea.

Knowledge Management: Journal