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Scholarly Journal of Biological Science Vol. 6(3), pp. 48-54, December 2017
Available online http:// www.scholarly-journals
ISSN 2315-6147 © 2017 Scholarly-Journals

Prevalence and antibiotic susceptibility pattern of Bacterial isolates from Red Sokoto Goats (Rsg) with subclinical mastitis in Sokoto North Local Government Area, Sokoto State, Nigeria

Tambuwal, F.M. and Jibrin, A.

Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto. Nigeria

Abstract :


This was a cross sectional study involving lactating Red Sokoto goats (RSG) in Sultan wards (community) of Sokoto North local government area of Sokoto State conducted from April to September, 2017, to determine the prevalence of subclinical mastitis and identify bacterial causative agents. A total of 340 RSG with apparent diagnostic features of mastitis were randomly selected and milk samples collected. The samples were screened for mastitis using California mastitis test (CMT). Accordingly, 43/340 (12.65%) declared positive for subclinical mastitis. Using standard bacteriological isolation and identification methods, the CMT positive samples were further subjected to examination. Out of the 43 samples 28/43 (65.12%) yielded growth of gram positive bacteria while 15/43 (34.88%) for Gram negative organisms. The recovered isolates were Staphylococcus aureus 90/310 (29.0%), S. epidermidis 20/310 (6.5%), Streptococcus agalactiae 70/310 (22.6%), Streptococcus dysgalactiae 20/310 (6.5%), Klebsiella pneumoniae 14/310 (4.5%). Escherichia coli 35/310 (11.3%), Salmonella typhimurium 36/ 310 (11.6%), Shigella flexneri 14/310 (4.5%) and Proteus vulgaris 11/310 (3.6%). Staphylococcus aureus and Streptococcus agalactiae have the highest frequency of occurrence. All the recovered isolates were tested against panel of eight antibiotics namely Ampicillin (10µg), Augmentin (30µg), Ciprofloxacin (5µg), Ceptazidine (30µg), Cefuroxine (30µg) Ceftriaxone (5µg), Erythromycin (30µg), Cloxacillin (5µg), Nitrofurantoin (30µg), Ofloxacillin (5µg) and Gentamycin (10µg). The highest resistance recorded was against Ampicillin (100%) while the least was observed against Gentamycin and Ofloxacin. The study showed that there is high prevalence of mastitis in RSG in the study area and the bacterial isolates exhibited multi-drug resistance pattern against not less than four antibiotics. Thus, to reduce the prevalence of subclinical mastitis, farmers in the study area need to be trained on good milking practices and improvement in environmental and personal hygiene.


Key words: Mastitis, goats, Bacteria, Antibiotics, Nigeria.

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