Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXIX, Issue 1
Written by Daniswara Danindra DARMESTI, Roostita L. BALIA, Gemilang Lara UTAMA
This study aims to determine the resistance pattern of Escherichia coli in broiler chickens given Lactobacillus sp. during the maintenance period. A total of 48 chicken cloacal swab samples given Lactobacillus sp. and 48 samples of untreated chicken cloacal swabs were taken from farms in Cimarigi Village, Sukadana District, Ciamis Regency. E. coli was isolated and identified, followed by an antimicrobial susceptibility test using the disc diffusion method according to the Kirby Bauer method against the antibiotics amoxicillin (20 μg), erythromycin (15 μg), and ciprofloxacin (5 μg). Data on the diameter of the antibiotic inhibition zone were compared with standard bacterial sensitivity and classified as sensitive, intermediate, and resistant. The results showed that E.coli from both sample groups were 100% resistant to amoxicillin and erythromycin. The pattern of resistance to ciprofloxacin in the sample group given probiotics was 76% intermediate and 24% resistant, while the sample group that was not given probiotics was 96% resistant, 2% intermediate, and 2% sensitive.
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