TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Hohmann, Maria-Franziska
A1  - Wente, Nicole
A1  - Zhang, Yanchao
A1  - Krömker, Volker
T1  - Bacterial Load of the Teat Apex Skin and Associated Factors at Herd Level
JF  - Animals
N2  - 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.
KW  - teat end colonization
KW  - mastitis pathogens
KW  - wet-dry swab technique
KW  - bedding
KW  - season
KW  - Euterentzündung
Y1  - 2020
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-17251
U6  - https://doi.org/10.25968/opus-1725
DO  - https://doi.org/10.25968/opus-1725
VL  - 10
IS  - 9
ER  -