@inproceedings{orgprints14467, publisher = {Verlag Dr. K{\"o}ster}, address = {Berlin}, year = {2009}, pages = {186--189}, title = {Entwicklung der Erregerbefunde und Zellzahlen aus Viertelanfangsgemelken in Herden des pro-Q Projekts}, author = {Michael Walkenhorst and Fritz Heil and Silvia Ivemeyer and Peter Klocke and Christophe Notz and Ariane Maeschli and Pamela Staehli}, url = {https://orgprints.org/id/eprint/14467/}, abstract = {The objective of this study was to assess effects on intramammary infections and somatic cell score (SCS) upon reduction antibiotic udder treatments. The study was part of an udder health programme (pro-Q) implementing preventive measures and complementary treatment methods. The treatment proportion decreased from annually 39 to 20 per 100 cows. A total of 10'000 of quarter milk samples out of 4 yearly investigations of 33 Swiss dairy herds were analysed .There was no general change in somatic cell score (SCS) considering all taken samples. A significant increase of Staphylococcus ssp. findings (12\%) could be observed beside a decrease of the SCS in samples of this pathogens group. Using GLM statistical analysis, significant effects by lactation number, days in milk, pathogens and farm on SCS could be shown.}, keywords = {Milchvieh, Eutergesundheit, Antibiotikaminimierung, Viertelanfangsgemelksbefunde, Zellzahl, Bakteriologie} }