期刊名称：Potravinarstvo : Scientific Journal for Food Industry
印刷版ISSN：1338-0230
电子版ISSN：1337-0960
出版年度：2020
卷号：14
页码：164-169
DOI：10.5219/1338
出版社：Association HACCP Consulting
摘要：The aim of this study was to determine the occurrence of pathogens in selected group of ewes and the relationship between somatic cell count (SCC) and the presence of pathogens. The experiment was carried out on a dairy farm, where predominantly breed was a Tsigai. Sampling was carried out in monthly intervals as part of the milk recording test day from February to July 2019. A total of 303 ewes were included in the survey, during the milk recording test day. The ewes with SCC ≥1000 × 10 3 cells.mL -1 were selected for further sampling at half udder level. Based on SCC the ewes were divided into five groups: <200 ×10 3 ; ≥200 <400 × 10 3 ; ≥400 <600 × 10 3 ; ≥600 <1000 × 10 3 ; ≥1000 × 10 3 cells.mL -1 . The first group of SCC contained 33.9% of milk samples, the second 14.1% of samples, the third 5.7% of samples, the fourth 6.2% and the fifth 40.1% of samples. The most common pathogens were coagulase negative staphylococci (CNS). The most frequent CNS was Staphylococcus (S.) simulans (24.4%). S. aureus was identified in 5.3% of bacteriological positive samples. Almost 70% of ewes with bacteriological positive samples were repeated identified the presence of pathogens during tested period. SCC ≥500 × 10 3 cells.mL -1 were detected in 92.5% bacteriological positive milk samples. The presence of pathogens increased SCC in milk ( p <0.001) as compared to samples free of pathogens. In conclusion, the SCC ≥500 × 10 3 cells.mL -1 could be important for detection of subclinical mastitis at half udder level in dairy ewes.
