dc.description.abstract | The research work was conducted with 100 faecal samples collected directly from the rectum
of diarrhoeic goats during the period of January/2014 to June/2014 of Sylhet govt. goat
farm, sylhet, Govt.veterinary hospital, Mirjajangal Sylhet, Govt.veterinary hospital,
jaintapur,Sylhet , Kajir bazar, Sylhet, Shah poran region, Sylhet to find out the causal agents
of goat diarrhoea and antibiotic sensitivity against the goat diarrhoea. Isolation and
identification of bacteria were confirmed on the basis of their morphology, staining, cultural
and biochemical properties. Antibiotic sensitivity test was studied by disc diffusion method of
Kirby-Bauer technique. Out of 100 faecal samples 76 samples (76%) were found positive for
Escherichia coli, 80 samples (80%) for Salmonella spp. and 41 samples (41%) for
Staphylococcus spp. Sensitivity test was conducted by 11 commonly used antibiotics with the
test faecal samples. The results showed that out of 11 antibiotics, 5 antibiotics (Penicillin-G,
Erythromycin, Amoxycillin, Bacitracin and Cefalexin) were resistant as these did not show
any inhibition zone. Remaining 6 antibiotics were sensitive in which Ceftriaxone showed
highest inhibitory zone about 34.8 mm in average of 5 samples. Cotrimoxazole showed 2
highest inhibitory zone about 34 mm in average of 5 samples. Gentamycin showed 3
nd
highest
inhibitory zone about 29.8 mm in average of 5 samples. The findings of the experiment
speculate that the use of Ceftriaxone, Cotrimoxazole and Gentamycin might have the
preference in clinical control of goat diarrhoea.This test provided the guideline for the
veterinarian to select appropriate antibiotics to reduce the economic loss through selecting
the sensitive antibiotics. | en_US |