BACTERIAL SPECIES ISOLATED FROM DIARRHOEIC CALVES AND ITS ANTIBIOTIC SENSITIVITY PATTERN
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Date
2017
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Int. Journal of Science, Environment and Technology
Abstract
This study was performed to identify various bacteria from feces of calves
suffering from diarrhea, and to determine in vitro antimicrobial activity. Fecal samples were
collected from 80 diarrheic calves and primarily tested for the presence of Escherichia coli,
Salmonella spp. and Staphylococcus aureus using bacteriological examination, biochemical
reactions. 60 bacterial isolates from the 80 fecal samples were identified using bacteriological
and biochemical methods. Escherichia coli was considered to be the most frequent bacterium
isolated numbering 22 (36.66%) followed by Salmonella sp. as the second most prevalent 11
(18.33%). Further isolates such as Staphylococcus aureus 8 (13.33%), Enterococcus faecalis
5 (8.33%) and Shigella sp. 3 (5.00%) were isolated and identified. Among the antibiotic
sensitivity 55.0% were sensitive to Amikacin, 55% were sensitive to Ceftriaxone, 69.0%
sensitive to Ciprofloxacin, 81.5% were sensitive to Kanamycin, and 75.5% were sensitive to
Nalidixic acid (Table 4). Similarly majority of the bacterial isolates showed resistance to
Ampicillin (75.0%), Amoxycillin (62.0%), Ceftriaxone (45.0%), Chloramphenicol (68.0%),
Gentamicin (50.0%), Streptomycin (65.0%) and Tetracycline (74.0%).
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Veterinary Science