Bu çalışma ile, Kars ili ve yöresinde ineklerde mastitislerin insidensinin belirlenmesi, mastitisli meme lopları ve supramammar lenf düğümlerinin patolojik olarak incelenmesi ve 'hastalığa neden olan etkenlerin izole ve identifiye edilmesi amaçlanmıştır. Bölgedeki iki mezbahada 950 inek kesim öncesi California mastitis testi (CMT) ve klinik olarak, kesim sonrasında ise makroskobik olarak muayene edilmiş ve toplam 105'inde (% 11.05) mastitis tespit edilmiştir. CMT pozitif süt örnekleri ile lezyonlu meme loplarından yapılan ekimlerde Staph. aureus (% 43.75), C. pyogenes (% 19.79), Sn: agaiactiae (% 9.37), Staph. epidermidis (% 8.33), E. col.i (% 7.29), Str. dysgalactiae (% 4.16), B. subtilis (% 3.15), B. cereus (% 2.08) ve Candida spp. (% 2.08) izole ve identifiye edilmiştir. Makroskobik olarak, 45 meme lobunda sisterna ve parenkimde küçük nodüler oluşumlar, 33 lopda sisterna ve parenkimde fibröz kapsülle çevrili apse kitleleri, 9 lopda parenkimal bağdoku artışı, 4 lopda sisternada kalın fibröz kapsülle çevrili nekrotik kitleler, 7 lopda sisterna çeperi ve parenkimde nohut büyüklüğünde tek veya birleşik yapıda nodüller ile 4 lopda kanama ve ödem gözlenmiştir. Meme loplarında gözlenen histopatolojik bulgulara dayanılarak mastitisler; mastitis galactophoritis catarhalis acuta (7 lop), mastitis galactophoritis catarhalis chronica (43 lop), mastitis apestomatosa (33 lop), mastitis interstitialis nonpurulenta (12 lop), mastitis actinomycotica (8 lop), mastitis acuta gravis (5 lop), mastitis chronica (4 lop) ve mastitis hemorrhagica (4 lop) olarak sınıflandırılmıştır.

Summary: The aim of the present study was to determine the incidence of bovine mastitis, in Kars region and its surrounds, to carry out pathological examination of the lobes with mastitis and their supramammary lymph nodes and to isolate and identify the microorganisms causing the disease. Nine hundred and fifty cows brought to two local abattoirs . were examined clinically for mastitis prior to slaughter and their milk was tested using the California mastitis test (CMT). Following slaughter, gross pathological examination was performed. A total of 105 (11.05 %) cows were found to have mastitis. Inoculations from the lobes with lesion and CMT positive milk samples yielded Staph. aureus (43.75 %), C. pyogenes (19.79 %), Str. agaiactiae (9.37 %)', Staph. epidermidis (8.33 %), E. coli (7.29 %), Str. dysgalactiae, (4.16 %), B. subtilis (3.15 %), B. cereus ( 2.08 %) and Candida spp. (2.08 %). The gross.lesions comprised of small nodular structures on both the wall of cisterna and parenchyma (45 lobes), abscesses covered by fibrous capsulé on the cisterna and parenchyma (33 lobes), parenchyma! fibrosis (9 lobes), necrotic masses covered by thick fibrous capsule in the cisterna (4 lobes), single or coalesced nodules the size of a chickpea on the wall of cisterna and parenchyma (7 lobes), and hemorrhage and oedema (4 lobes). Dependent upon the lesions observed by histopathological examination of the lobes, mastitis was classified as mastitis et galactophoritis catarhalis acuta (7 lobes), mastitis et galactophoritis catarhalis chronica (43 lobes), mastitis apestomatosa (33 lobes), mastitis interstitialis nonpurulenta (12 lobes), mastitis actinomycotica (8 lobes), mastitis acuta gravis (5 lobes), mastitis chronica (4 lobes) and mastitis haemorrhagica (4 lobes).