Bacterial Load of the Teat Apex Skin and Associated Factors at Herd Level
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In order to reduce antimicrobial treatment and prevent environmental mastitis, the aim of the present study was to investigate associations between herd level factors and microbial load on teat ends with environmental mastitis pathogens. Quarterly farm visits of 31 dairy farms over a one-year period were used for statistical analysis. During each farm visit, teat skin swabs, bedding and air samples were taken, and management practices and herd parameters were documented. Total mesophilic bacteria, esculin-positive streptococci and coliform bacteria were examined in the laboratory procedures from teat skin and environmental samples. Esculin-positive streptococci and coliform bacteria on teat ends increased with high THIs in the barn and during the spring and summer. Significantly more coliform bacteria on teat ends were found in herds with an increased percentage of normal or slightly rough teat ends. Cleaning cubicles more frequently, pre-cleaning teats before milking as well as post-dipping them after milking had a decreasing effect of teat skin load with total mesophilic and coliform bacteria at herd level. To conclude, teat skin bacterial load with environmental pathogens is subjected to fluctuations and can be influenced by hygienic farm aspects.
Original language | English |
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Journal | Animals - Open Access Journal |
Pages (from-to) | 1-19 |
Number of pages | 19 |
ISSN | 2076-2615 |
DOIs | |
Publication status | Published - 14 Sep 2020 |
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ID: 248546201