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Ataee, O., Hovareshti, P., Bolourchi, M., Niasari-Naslaji, A., Barin, A.. (1386). Prevalence and antimicrobial susceptibilities of coagulasenegative Staphylococci isolated from mammary secretions in pregnant Holstein heifers. , 8(3), 270-274. doi: 10.22099/ijvr.2007.1767
O. Ataee; P. Hovareshti; M. Bolourchi; A. Niasari-Naslaji; A. Barin. "Prevalence and antimicrobial susceptibilities of coagulasenegative Staphylococci isolated from mammary secretions in pregnant Holstein heifers". , 8, 3, 1386, 270-274. doi: 10.22099/ijvr.2007.1767
Ataee, O., Hovareshti, P., Bolourchi, M., Niasari-Naslaji, A., Barin, A.. (1386). 'Prevalence and antimicrobial susceptibilities of coagulasenegative Staphylococci isolated from mammary secretions in pregnant Holstein heifers', , 8(3), pp. 270-274. doi: 10.22099/ijvr.2007.1767
Ataee, O., Hovareshti, P., Bolourchi, M., Niasari-Naslaji, A., Barin, A.. Prevalence and antimicrobial susceptibilities of coagulasenegative Staphylococci isolated from mammary secretions in pregnant Holstein heifers. , 1386; 8(3): 270-274. doi: 10.22099/ijvr.2007.1767

Prevalence and antimicrobial susceptibilities of coagulasenegative Staphylococci isolated from mammary secretions in pregnant Holstein heifers

Iranian Journal of Veterinary Research
مقاله 12، دوره 8، شماره 3 - شماره پیاپی 20، 2007، صفحه 270-274    اصل مقاله (30.88 K)
نوع مقاله: Full paper (Original article)
شناسه دیجیتال (DOI): 10.22099/ijvr.2007.1767
نویسندگان
O. Ataee* 1؛ P. Hovareshti2؛ M. Bolourchi2؛ A. Niasari-Naslaji2؛ A. Barin2
1Department of Clinical Sciences, Faculty of Veterinary Medicine, Islamic Azad University of Karadj, Karadj, Iran
2Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
چکیده
Mammary secretions of 913 quarters from 229 pregnant Holstein heifers were obtained aseptically to determine the prevalence of coagulase-negative Staphylococci isolated during periparturient period. Quarter samples were collected 14 to 10 days before expected parturition. Analysis of culture data indicated that 78.5% (717/913) of samples were negative, 20.5% (187/913) contained coagulase-negative Staphylococci, 0.33% coagulase-positive Staphylococci, 0.33% E. coli, 0.22% Arcanobacterium pyogenes and 0.11% environmental Streptococci spp. A total of 187 isolates of coagulase-negative Staphylococci were tested in vitro for susceptibility to 8 antimicrobial agents. Susceptibility was detected in 180 (96.3%), 187 (100%), 163 (87.2%), 168 (89.8%), 183 (97.9%), 187 (100%), 174 (93%) and 164 (87.7%) isolates for oxytetracycline, gentamicin, streptomycin, tylosin, cloxacillin, enrofluxacin, trimethoprim+ sulphamethoxazole and penicillin G, respectively. More than 93.8% of the isolates were susceptible to all antimicrobial agents tested. In conclusion, results of this study suggest that coagulase-negative Staphylococci spp. is the most prevalent microorganism isolated from intramammary secretions in pregnant heifers which issusceptible to common antibiotics in vitro.
 
کلیدواژه‌ها
Heifer mastitis؛ Coagulase-negative Staphylococci؛ antibiotic susceptibility
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