TY - JOUR U1 - Wissenschaftlicher Artikel A1 - Paduch, Jan-Hendrik A1 - Lücking, Johanna A1 - Mansion-de Vries, Elisabeth A1 - Zinke, Claudia A1 - Wente, Nicole A1 - Krömker, Volker T1 - Prevention of Intramammary Infections by Prepartum External Application of a Teat Dip Containing Lactic Acid Bacteria with Antimicrobial Properties in Dairy Heifers JF - Pathogens N2 - The aim of the current study was to investigate the effects of the prepartum external treatment of teats with a combination of four lactic acid bacteria strains viz. Lactobacillus (Lb.) rhamnosus ATCC 7469, Lactococcus lactis subsp. lactis ATCC 11454, Lb. paracasei 78/37 (DSM 26911), and Lb. plantarum 118/37 (DSM 26912) on the postcalving udder health of dairy heifers. The study used a split-udder design. Two weeks before the expected calving date, one of two contralateral teats of a teat pair was dipped with an aqueous suspension of lactic acid bacteria (final bacterial counts 8.40–8.47 log10-transformed CFU/mL) once in a week until calving; the other teat of the pair was not treated. After calving, quarter foremilk samples were taken and investigated cyto-microbiologically. In total, 629 teat pairs of 319 heifers were included. There was an association between the treatment and intramammary infections caused by the major udder-pathogenic bacteria Staphylococcus aureus, Streptococcus dysgalactiae, and enterococci, as well as clinical mastitis in the first 100 days after calving. The present study indicates that intramammary infections with major pathogens and clinical mastitis may be prevented by regular prepartum external application of lactic acid bacteria in dairy heifers. KW - lactic acid bacteria KW - Milchsäurebakterien KW - Färse KW - Euterentzündung KW - Prävention KW - dairy heifers KW - intramammary infections KW - prevention Y1 - 2020 UN - https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-16373 SN - 2076-0817 SS - 2076-0817 U6 - https://doi.org/10.25968/opus-1637 DO - https://doi.org/10.25968/opus-1637 N1 - Gefördert mit Mitteln des DFG-Fonds 2020. VL - 9 IS - 4 PB - MDPI ER -