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Bacterial Load of the Teat Apex Skin and Associated Factors at Herd Level

  • 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 temperature–humidity indices (THI) in the barn 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 the herd level. To conclude, teat-skin bacterial load with environmental pathogens is subject to fluctuations and can be influenced by aspects of farm hygiene.

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Author:Maria-Franziska Hohmann, Nicole Wente, Yanchao Zhang, Volker KrömkerORCiDGND
DOI original:https://doi.org/10.3390/ani10091647
Parent Title (English):Animals
Document Type:Article
Year of Completion:2020
Publishing Institution:Hochschule Hannover
Release Date:2020/09/30
Tag:bedding; mastitis pathogens; season; teat end colonization; wet-dry swab technique
GND Keyword:Euterentzündung
Link to catalogue:1757600736
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:630 Landwirtschaft, Veterinärmedizin
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International