TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Katthöfer, Pauline
A1  - Zhang, Yanchao
A1  - Wente, Nicole
A1  - Preine, Franziska
A1  - Nitz, Julia
A1  - Krömker, Volker
T1  - The Influence of Milk Leakage, Udder Pressure and Further Risk Factors on the Development of New Intramammary Infections during the Dry Period of Dairy Cows
JF  - Pathogens
N2  - Prevention of new intramammary infection (NIMI) during the dry period (DP) is essential to prevent the development of mastitis in dairy cows. To investigate risk factors for NIMI, 212 cows, comprising a total of 848 udder quarters, were examined in this study. Quarter milk samples were taken on the day of drying off and 7 ± 3 days after calving. Cow- and quarter-level associated risk factors were assessed at the beginning of the DP and after calving. In total, 7.1% of the udder quarters developed an NIMI between the samplings. Non-aureus staphylococci (40.4%) and Gram-negative pathogens (22.8%) were most frequently the cause of NIMI. The observed milk leakage prevalence was 16.7%, with a peak 24 h after drying off. Simultaneously, the udder pressure peaked 24 h after drying off. A significant correlation between milk yield on the day before drying off and milk leakage could be proven. Cows with quarters leaking milk produced an average milk yield of 28.32 kg on the day before drying off. Generalised linear mixed models and odds ratios were calculated to determine the significant risk factors for NIMI during the DP and early lactation. Quarters leaking milk had 3.4 higher odds for NIMI between the samplings compared to quarters without milk leakage. Quarters from cows with dirty udders had 3.1 higher odds of developing an NIMI between the samplings compared to quarters from cows with clean udders. The results of this study demonstrate the importance of dry cow management before drying off and during the critical period of active involution of the udder tissue.
KW  - cattle
KW  - mastitis
KW  - udder health
KW  - drying off
KW  - milk leakage
KW  - udder pressure
KW  - udder hygiene
KW  - risk factors
KW  - Milchkuh
KW  - Euterentzündung
KW  - Trockenstellen
KW  - Risikofaktor
KW  - Euter
Y1  - 2024
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-31589
SN  - 2076-0817
SS  - 2076-0817
U6  - https://doi.org/10.25968/opus-3158
DO  - https://doi.org/10.25968/opus-3158
VL  - 13
IS  - 5
SP  - 20
S1  - 20
ER  -