Skip to main content Accessibility help
×
Home
Hostname: page-component-559fc8cf4f-rz424 Total loading time: 0.255 Render date: 2021-03-08T07:10:18.081Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

Changes in cow teat tissue created by two types of milking cluster

Published online by Cambridge University Press:  19 October 2000

J. ERIC HILLERTON
Affiliation:
Institute for Animal Health, Compton Laboratory, Newbury RG20 7NN, UK
IAN OHNSTAD
Affiliation:
ADAS Bridgets, Martyr Worthy, Winchester SO21 1AP, UK
JOHN R. BAINES
Affiliation:
ADAS Bridgets, Martyr Worthy, Winchester SO21 1AP, UK Present address: Fullwood Ltd, Ellesmere SY12 9DF, UK.
KATHARINE A. LEACH
Affiliation:
Scottish Agricultural College Food and Farming Department, Crichton Royal Farm, Bankend Road, Dumfries DG1 4SZ, UK

Abstract

We have investigated the responses of cow teats to machine milking in a study of relatively newly installed commercial milking parlours fitted with one of two types of milking cluster. The first was a common type with a large claw volume (> 200 ml), 15–16 mm i.d. long milk tube, 10 mm short pulse tube, cluster weight < 3·2 kg and used alternate pulsation. The second was a more traditional type with a 150 ml claw bowl volume, 13·5 mm i.d. long milk tube, 8 mm short pulse tube, cluster weight ∼ 3·5 kg and used simultaneous pulsation. We scored ∼ 50 cows in each of 20 herds, all within 60 s of cluster removal, for changes from the premilking teat condition: teat colour (creation of reddening or blueness), firmness, thickening at the base of the teat associated with the position of the liner mouthpiece, and whether the teat duct orifice was open. There were statistically significant differences in the proportion of cows displaying these four alterations in teat condition between herds using the two types of cluster. The more common type of cluster was always associated with better teat condition. The cause and effect of poorer teat condition have not been fully established and are likely to be multifactorial. The principal risk factors may be cluster weight, overmilking, vacuum applied during the overmilking phase and the design of the liner mouthpiece.

Type
Research Article
Copyright
Proprietors of Journal of Dairy Research 2000

Access options

Get access to the full version of this content by using one of the access options below.

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 67 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 8th March 2021. This data will be updated every 24 hours.

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Changes in cow teat tissue created by two types of milking cluster
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Changes in cow teat tissue created by two types of milking cluster
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Changes in cow teat tissue created by two types of milking cluster
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *