| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Institute for Animal Science and Health, ID-Lelystad, 8200 AB Lelystad, The Netherlands
2 University of Prince Edward Island, Atlantic Veterinary College, Department of Health Management, Charlottetown, PEI, Canada C1A 4P3
3 Cornell University, College of Veterinary Medicine, Department of Population Medicine and Diagnostic Sciences, Ithaca, NY 14853
Corresponding author: Y. de Haas; e-mail: Y.deHaas{at}id.wag-ur.nl.
Associations were estimated between pathogen-specific cases of clinical mastitis (CM) and somatic cell count (SCC) patterns based on deviations from the typical curve for SCC during lactation and compared with associations between pathogen-specific CM and lactation average SCC. Data from 274 Dutch herds recording CM over an 18-mo period were used. Pathogens found were Staphylococcus aureus, coagulase-negative staphylococci, Escherichia coli, Streptococcus dysgalactiae, Streptococcus uberis, streptococci other than Strep. dysgalactiae and Strep. uberis, and culture-negative samples. The dataset contained 245,595 test-day records on SCC, recorded in 24,012 lactations of 19,733 cows of different parities. Pattern definitions were based on three or five consecutive test-day records. The patterns differentiated between a short or longer period of increased SCC and also between lactations with and without recovery. Logistic regression was applied to identify associations between presence of patterns and occurrence of pathogens. Occurrence of overall CM in a lactation is equally or even more accurately predicted by the presence of SCC in that lactation, than by a lactation average SCC of more than 200,000 cells/mL. Patterns can also distinguish between chances of risk for specific mastitis-causing pathogens. Clinical E. coli mastitis was significantly associated with the presence of a short peak in SCC, whereas Staph. aureus was associated with long increased SCC. Streptococcus dysgalactiae was not strongly associated with any of the defined patterns of peaks in SCC, and no single unambiguous pattern was found for Strep. uberis.
Key Words: somatic cell count • pattern • lactation curve • clinical mastitis
Abbreviation key: CM = clinical mastitis, CSCC = corrected SCC, HF = Holstein-Friesian, OR = odds ratio, SCC200 = lactation average of SCC of more or less than 200,000 cells/ml, SCM = subclinical mastitis
This article has been cited by other articles:
|
|
 |
|
  C. Hagnestam-Nielsen, U. Emanuelson, B. Berglund, and E. Strandberg Relationship between somatic cell count and milk yield in different stages of lactation J Dairy Sci, July 1, 2009; 92(7): 3124 - 3133. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. P. Sorensen, T. Mark, P. Madsen, and M. S. Lund Genetic correlations between pathogen-specific mastitis and somatic cell count in Danish Holsteins J Dairy Sci, July 1, 2009; 92(7): 3457 - 3471. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Steeneveld, L. C. van der Gaag, H. W. Barkema, and H. Hogeveen Providing probability distributions for the causal pathogen of clinical mastitis using naive Bayesian networks J Dairy Sci, June 1, 2009; 92(6): 2598 - 2609. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. L. A. Cerri, S. O. Juchem, R. C. Chebel, H. M. Rutigliano, R. G. S. Bruno, K. N. Galvao, W. W. Thatcher, and J. E. P. Santos Effect of fat source differing in fatty acid profile on metabolic parameters, fertilization, and embryo quality in high-producing dairy cows J Dairy Sci, April 1, 2009; 92(4): 1520 - 1531. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. ten Napel, Y. de Haas, G. de Jong, T. J. G. M. Lam, W. Ouweltjes, and J. J. Windig Characterization of distributions of somatic cell counts J Dairy Sci, March 1, 2009; 92(3): 1253 - 1264. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. Madsen, M. M. Shariati, and J. Odegard Genetic Analysis of Somatic Cell Score in Danish Holsteins Using a Liability-Normal Mixture Model J Dairy Sci, November 1, 2008; 91(11): 4355 - 4364. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
O. Reksen, L. Solverod, and O. Osteras Relationships Between Milk Culture Results and Composite Milk Somatic Cell Counts in Norwegian Dairy Cattle J Dairy Sci, August 1, 2008; 91(8): 3102 - 3113. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. P. Sorensen, B. Guldbrandtsen, J. R. Thomasen, and M. S. Lund Pathogen-Specific Effects of Quantitative Trait Loci Affecting Clinical Mastitis and Somatic Cell Count in Danish Holstein Cattle J Dairy Sci, June 1, 2008; 91(6): 2493 - 2500. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. de Haas, W. Ouweltjes, J. t. Napel, J. J. Windig, and G. de Jong Alternative Somatic Cell Count Traits as Mastitis Indicators for Genetic Selection J Dairy Sci, June 1, 2008; 91(6): 2501 - 2511. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Steeneveld, H. Hogeveen, H. W. Barkema, J. van den Broek, and R. B. M. Huirne The Influence of Cow Factors on the Incidence of Clinical Mastitis in Dairy Cows J Dairy Sci, April 1, 2008; 91(4): 1391 - 1402. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
O. Reksen, L. Solverod, and O. Osteras Relationships Between Milk Culture Results and Milk Yield in Norwegian Dairy Cattle J Dairy Sci, October 1, 2007; 90(10): 4670 - 4678. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. J. Lievaart, H. W. Barkema, W. D. J. Kremer, J. van den Broek, J. H. M. Verheijden, and J. A. P. Heesterbeek Effect of Herd Characteristics, Management Practices, and Season on Different Categories of the Herd Somatic Cell Count J Dairy Sci, September 1, 2007; 90(9): 4137 - 4144. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. G. M. O. Riekerink, H. W. Barkema, and H. Stryhn The Effect of Season on Somatic Cell Count and the Incidence of Clinical Mastitis J Dairy Sci, April 1, 2007; 90(4): 1704 - 1715. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Ostergaard, M. G. G. Chagunda, N. C. Friggens, T. W. Bennedsgaard, and I. C. Klaas A Stochastic Model Simulating Pathogen-Specific Mastitis Control in a Dairy Herd J Dairy Sci, December 1, 2005; 88(12): 4243 - 4257. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. P. L. Calus, J. J. Windig, and R. F. Veerkamp Associations Among Descriptors of Herd Management and Phenotypic and Genetic Levels of Health and Fertility J Dairy Sci, June 1, 2005; 88(6): 2178 - 2189. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
