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


     

Journal of Dairy Science Vol. 76 No. 3 728-733
© 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 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 Miller, R. H.
Right arrow Articles by Schutz, M. M.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Miller, R. H.
Right arrow Articles by Schutz, M. M.

The Relationship of Milk Somatic Cell Count to Milk Yields for Holstein Heifers After First Calving

R. H. Miller 1, M. J. Paape 1, L. A. Fulton 1, and M. M. Schutz 1

1 Milk Secretion and Mastitis Laboratory, Livestock and Poultry Sciences Institute, USDA, Agricultural Research Service, Beltsville, MD 20705

The contribution of a dilution effect to the relationship between milk yield and milk SCC was investigated using data from 24 Holsteins during the first 75 d after first calving. Bucket and quarter milk SCC were collected at weekly intervals. Individual milk weights were obtained at milking, and samples were obtained for determination of SCC. The milk weights at the corresponding a.m. milking on the following day were also obtained. A dilution effect was assumed to cause the regression of milk yield on milk SCC to diminish when adjustment was made for milk yield on the day following sampling for SCC. Regressions of milk yield on various functions of SCC decreased by about one-half when adjustment was made for the next day's milk yield, but the regressions remained significant. The observed negative relationship between milk yield and SCC may partly reflect both the true biological effects of udder inflammation and a dilution effect. The carry-over effect of SCC on milk yields measured 1 wk after cell counting was investigated, but no effect was significant.

Key Words: somatic cell counts • epithelial cells • mastitis

Submitted on August 14, 1992
Accepted on October 27, 1992




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
R. H. Miller, H. D. Norman, G. R. Wiggans, and J. R. Wright
Relationship of Test-Day Somatic Cell Score with Test-Day and Lactation Milk Yields
J Dairy Sci, July 1, 2004; 87(7): 2299 - 2306.
[Abstract] [Full Text] [PDF]

Home page
 Infect. Immun.Home page
J.-W. Lee, M. J. Paape, T. H. Elsasser, and X. Zhao
Recombinant Soluble CD14 Reduces Severity of Intramammary Infection by Escherichia coli
Infect. Immun., July 1, 2003; 71(7): 4034 - 4039.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J.-W. Lee, M. J. Paape, T. H. Elsasser, and X. Zhao
Elevated Milk Soluble CD14 in Bovine Mammary Glands Challenged with Escherichia coli Lipopolysaccharide
J Dairy Sci, July 1, 2003; 86(7): 2382 - 2389.
[Abstract] [Full Text] [PDF]


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