Change in udder health and overmilking

Journal of Dairy Science
R P NatzkeG H Schmidt

Abstract

Removing milker units as soon as milk flow stopped was compared to milking for a fixed time of 12 min in an 8-wk trial with 60 cows. Teats were dipped in broth culture of approximately 10(9) colony forming units per ml of Staphylococcus aureus, Streptococcus agalactiae, and Streptococcus uberis for 4 wk. More new infections of quarters occurred in the 12-min group. In trials 2 and 3, 20 additional cows were milked with automatic milking machine detachers and 20 cows were milked with a flow control unit for 12 min each trial. New infection rates were highest in the two groups milked for 12 min. Age for lactation and cows were associated with most of the variation in the new infection rate. Cows with pointed teat ends had the highest rate of new infection. Effects of fixed-time milking on increased mammary infection and clinical mastitis were small.

References

Feb 1, 1975·Journal of Dairy Science·J W Pankey, W N Philpot
Mar 1, 1973·Journal of Dairy Science·R D Appleman

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Citations

Feb 1, 1984·Journal of Dairy Science·R H Miller
Jan 30, 2002·Journal of Dairy Science·F NeijenhuisJ P Noordhuizen
Apr 14, 2007·Journal of Dairy Science·V TancinP Hogewerf
Jan 1, 1982·Journal of Dairy Science·R P NatzkeD R Bray
Aug 1, 1990·Zentralblatt für Veterinärmedizin. Reihe A·O OsteråsA Lund
Mar 2, 2006·Journal of Dairy Science·V TancinJ Macuhová
Jun 29, 2013·The Journal of Dairy Research·J Paul EdwardsJenny G Jago
Feb 1, 1986·The Journal of Dairy Research·G A MeinD M Williams
Nov 29, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Masafumi EnokidaniAiko Watanabe

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