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Influence of switch level of automatic cluster removers on milking performance and udder health

Published online by Cambridge University Press:  01 June 2009

Morten D. Rasmussen
Morten D. Rasmussen
Affiliation:
National Institute of Animal Science, Research Centre Foulum, DK-8830 Tjele, Denmark
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Summary

The effect of a switch level of 200 or 400 g/min for automatic cluster removers on milking performance and udder health was measured with 71 first lactation cows in their first 36 weeks of lactation and with 64 older cows in their first 12 weeks of lactation. Early removal of the milking unit decreased machine-on time by 0·5 min, increased average milk flow rate slightly, improved teat condition significantly and reduced the change in teat end thickness during milking of first lactation cows. Early removal of the milking unit did not affect milk yield or composition, and the incidence and prevalence of subclinical mastitis were the same in the two groups. Fewer older cows developed clinical mastitis in the group switched at 400 g/min, but this was not significant. It is concluded that the milking unit can be detached at a milk flow rate of 400 instead of 200 g/min without having a negative influence on milk yield. Machine-on time is shortened and teat condition improved, and udder health does not seem to be affected.

Type
Original Articles
Information
Journal of Dairy Research , Volume 60 , Issue 3 , August 1993 , pp. 287 - 297
Copyright
Copyright © Proprietors of Journal of Dairy Research 1993

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