JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 76 No. 9 2589-2596
© 1993 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Nielen, M.
Right arrow Articles by Maatje, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Nielen, M.
Right arrow Articles by Maatje, K.

Relations Between On-Line Electrical Conductivity and Daily Milk Production on a Low Somatic Cell Count Farm

M. Nielen 1, Y. H. Schukken 1, J. Van de Broek 1, A. Brand 1, H. A. Deluyker 2, and K. Maatje 3

1 Department of Herd Health and Reproduction, Utrecht University, Yalelaan 7, 3584 CL Utrecht, The Netherlands
2 The UpJohn Company, Genevestraat 10, 1140 Brussels, Belgium
3 IVO-DLO Institute for Animal Production, PO Box 501, 3700 AM Zeist, The Netherlands

To study the relation between on-line electrical conductivity and daily milk production, data of 1389 cow days were analyzed. After correction for cow effects and DIM, a rise of 1 mS of the mean electrical conductivity caused a decline of .88 kg/d in milk production. A rise of 1 ln(SCC) unit was associated with an additional decline of .54 kg/d in milk production. In cows without clinical mastitis during the test period, the losses associated with mean electrical conductivity and ln(SCC) were 1.06 and .45 kg/d of milk production, respectively.

Electrical conductivity and SCC were associated with daily production loss; the effects were additive. Therefore, electrical conductivity and SCC can be utilized as indirect tests of subclinical mastitis.

Key Words: electrical conductivity • somatic cell count • daily milk production • mastitis

Submitted on December 7, 1992
Accepted on March 18, 1993




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
K. H. M. N. Sloth, N. C. Friggens, P. Lovendahl, P. H. Andersen, J. Jensen, and K. L. Ingvartsen
Potential for Improving Description of Bovine Udder Health Status by Combined Analysis of Milk Parameters
J Dairy Sci, April 1, 2003; 86(4): 1221 - 1232.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1993 by the American Dairy Science Association ®.