Journals / Yüzüncü Yıl Üniversitesi Veteriner Fakültesi Dergisi / 1998 / Cilt: 9 - Sayı: 1
A study on the etiology of subclinical mastitis in dairy cows in and around Van
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- 1–4
- DOI
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Abstract
In this study, 2550 milk samples collected from 650 dairy cows was examined for subclinical mastitis with California Mastitis Test (CMT) in and around Van. Two hundred (7.84%) milk samples were found positive by CMT. In bacteriological examination of CMT positive milk samples, 162 (81%) were found positive and 38 (19%) were negative. Of total 256 microorganisms isolated from 162 milk samples, 105 (41%) Staphylococci, 92 (35.9%) Streptococci and 59 (23.1%) other microorganisms were identified. Of the isolated staphylococci, 65 (25.39%) were coagulase positive Staphylococcus aureus, 9 (3.51%) Staphylococcus heamolyticus, 8 (3.12%) coagulase positive Staphylococcus intermedius, 8 (3.12%) Staphylococcus warnei and Staphylococcus saprophyticus, and 7 (2.73%) Staphylococcus epidermidis . Of the isolated streptococci, 17 (6.64%) group C, 15 (5.58%) group B (Streptococcus agalactiae), 2 (0.78%) group F, 1 (0.39%) group D streptococci were serogrouped whereas 57 (22.26%) streptococci could not serogrouped. Of 59 (23.1%) other microorganisms, 21 (8.2%) Stomatococcus, 18 (7.03%) E. coli, 9 (3.51%) Corynebacterium pyogenes, 6 (2.34%) Bacillus spp., 1 (0.39%) Brucella spp., Proteus spp., Micrococcus spp. and2 (0.78%) fungi were identified respectively.
Özet
Bu çalışmada, Van ve yöresindeki çeşitli işletmelerde yetiştirilen toplam 650 sağmal inekten alınan 2550 süt numunesi, California Mastitis Test (CMT) ile subklinik mastitis yönünden incelendi. CMT pozitif bulunan 200 süt örneğinden yapılan bakteriyolojik incelemelerde, süt numunelerinin 162 (%81)'sinde mikroorganizma izole edilirken, 38 (%19)'inde ise mikroorganizma izole edilemedi. İzole edilen toplam 256 mikroorganizmadan 105 (%41) 'i Stafılokok, 92 (%35,9) 'si Streptokok ve 59 (%23,1) 'u diğer mikroorganizmalar olarak identifiye edildi. İzole edilen Stafilokoklardan 65 (%23.39) 'i koagulaz pozitif Staphylococcus aureus, 9 (%3.51)'u Staphylococcus haemolyticus 8 (%3.12)'i koagulaz pozitif Staphylococcus intermedius, ve 8 (%3.12) 'i ayrı ayrı Staphylococcus warnei ve Staphylococcus saprophyticus, 7 (%2.73)'si Staphylococcus epidermidis olarak identifiye edildi. İzole edilen Streptokoklardan ise, 17 (%6.64) 'si grup C, 15 (%5.85) 'i grup B (Streptococcus agalactiae), 2 (%0.78) 'si grup F, 1 (%0.39J 'i grup D olarak serogruplandırılırken 57 (%22.26) 'si serogruplandırılamadı. İzole edilen diğer mikroorganizmalar ise sırasıyla; 21 (%8.2) 'i Stomatococcus, 18 (%7.03) 'i E. coli, 9 (%3.51) 'u Corynebacterium pyogenes, 6 (%2.34)'sı Bacillus spp., 1 (%0.39)'er adet Brucella spp., Proteus spp., Micrococcus spp. ve 2 (%0.78)'si de Maya olarak identifiye edildi.