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Association between isolation of Staphylococcus aureus one week after calving and milk yield, somatic cell count, clinical mastitis, and culling through the remaining lactation

Published online by Cambridge University Press:  16 October 2008

Anne Cathrine Whist ,
Olav Østerås  and
Liv Sølverød
Anne Cathrine Whist*
Affiliation:
Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, P.O. Box 8146 Dep., 0033 Oslo, Norway Department of Norwegian Cattle Health Services, TINE Norwegian Dairies, P.O. Box 58, 1431 Ås, Norway
Olav Østerås
Affiliation:
Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, P.O. Box 8146 Dep., 0033 Oslo, Norway Department of Norwegian Cattle Health Services, TINE Norwegian Dairies, P.O. Box 58, 1431 Ås, Norway
Liv Sølverød
Affiliation:
Department of Norwegian Cattle Health Services, TINE Norwegian Dairies, P.O. Box 58, 1431 Ås, Norway Mastitis Laboratory, TINE Norwegian Dairies, Fannestrandvegen 55, 6415 Molde, Norway
*
*For correspondence; e-mail: anne.c.whist@veths.no
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Abstract

Cows with isolation of Staphylococcus aureus approximately 1 week after calving and milk yield, somatic cell count (SCC), clinical mastitis (CM), and culling risk through the remaining lactation were assessed in 178 Norwegian dairy herds. Mixed models with repeated measures were used to compare milk yield and SCC, and survival analyses were used to estimate the hazard ratio for CM and culling. On average, cows with an isolate of Staph. aureus had a significantly higher SCC than culture-negative cows. If no post-milking teat disinfection (PMTD) was used, the mean values of SCC were 42 000, 61 000, 68 000 and 77 000 cells/ml for cows with no Staph. aureus isolate, with Staph. aureus isolated in 1 quarter, in 2 quarters and more than 2 quarters respectively. If iodine PMTD was used, SCC means were 36 000; 63 000; 70 000 and 122 000, respectively. Primiparous cows testing positive for Staph. aureus had the same milk yield curve as culture-negative cows, except for those with Staph. aureus isolated in more than 2 quarters. They produced 229 kg less during a 305-d lactation. Multiparous cows with isolation of Staph. aureus in at least 1 quarter produced 94–161 kg less milk in 2nd and >3rd parity, respectively, and those with isolation in more than 2 quarters produced 303–390 kg less than multiparous culture-negative animals during a 305-d lactation. Compared with culture-negative cows, the hazard ratio for CM and culling in cows with isolation of Staph. aureus in at least 1 quarter was 2·0 (1·6–2·4) and 1·7 (1·5–1·9), respectively. There was a decrease in the SCC and in the CM risk in culture-negative cows where iodine PMTD had been used, indicating that iodine PMTD has a preventive effect on already healthy cows. For cows testing positive for Staph. aureus in more than 2 quarters at calving, iodine PMTD had a negative effect on the CM risk and on the SCC through the remaining lactation.

Keywords

Staphylococcus aureusclinical mastitiscullingmilk yieldsomatic cell count
Type
Research Article
Information
Journal of Dairy Research , Volume 76 , Issue 1 , February 2009 , pp. 24 - 35
Copyright
Copyright © Proprietors of Journal of Dairy Research 2008

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References

Aarestrup, FM, Wegener, HC, Jensen, NE, Jonsson, O, Myllys, V, Thorberg, BM, Waage, S & Rosdahl, VT 1997 A study of phage- and ribotype patterns of Staphylococcus aureus isolated from bovine mastitis in the Nordic countries. Acta Veterinaria Scandinavica 38 243–252CrossRefGoogle ScholarPubMed
Allison, PD 2000 Survival Analysis using the SAS system, 4th printing. SAS Institute, Cary NC, USAGoogle Scholar
Barkema, HW, Schukken, YH & Zadoks, RN 2006 Invited Review: The role of cow, pathogen, and treatment regimen in the therapeutic success of bovine Staphylococcus aureus mastitis. Journal of Dairy Science 89 1877–1895CrossRefGoogle ScholarPubMed
Cox, DR 1972 Regression models and life-tables (with discussion). Journal of Royal Statistical Society B 34 187–220Google Scholar
Gröhn, YT, Eicker, SW, Ducrocq, V & Hertl, JA 1998 Effect of disease on the culling of Holstein dairy cows in New York State. Journal of Dairy Science 81 966–978CrossRefGoogle ScholarPubMed
Gröhn, YT, Wilson, DJ, Gonzales, RN, Hertl, JA, Schulte, H, Bennet, G & Schukken, YH 2004 Effect of pathogen-specific clinical mastitis on milk yield in dairy cows. Journal of Dairy Science 87 3358–3374CrossRefGoogle ScholarPubMed
International Dairy Federation 1981 Laboratory methods for use in mastitis work. Bulletin of the International Dairy Federation No 132. Brussels, Belgium:IDFGoogle Scholar
International Dairy Federation 1999 Suggested interpretation of mastitis terminology. Bulletin of the International Dairy Federation 338. Brussels, Belgium:IDFGoogle Scholar
Macciotta, NPP, Vicario, D & Cappio-Borlino, A 2005 Detection of different shapes of lactation curve for milk yield in dairy cattle by empeirical mathematical models. Journal of Dairy Science 88 1178–1191CrossRefGoogle Scholar
Middleton, JR, Fox, LK, Gay, JM, Tyler, JW & Besser, TE 2002 Influence of Staphylococcus aureus strain-type on mammary quarter milk somatic cell count and N-acetyl-beta-d-glucosaminidase activity in cattle from eight dairies. Journal of Dairy Science 85 1133–1140CrossRefGoogle ScholarPubMed
National Veterinary Institute 1993 Laboratory routines for mastitis diagnostics at the State Veterinary Laboratories [in Norwegian]. OsloGoogle Scholar
Norwegian Cattle Health Services 2006 Annual report [in Norwegian]. http://storfehelse.tine.no/dok/470_ARSRAPPORT_2005.pdfGoogle Scholar
Østerås, O, Edge, VL & Martin, SW 1999 Determinants of success or failure in the elimination of major mastitis pathogens in selective dry cow therapy. Journal of Dairy Science 82 1221–1231CrossRefGoogle ScholarPubMed
Østerås, O, Sandvik, L, Aursjø, J, Gjul, GG & Jorstad, A 1991 Assessment of strategy in selective dry cow therapy for mastitis control. Journal of Veterinary Medicine B 38 513–522CrossRefGoogle ScholarPubMed
Østerås, O, Sølverød, L & Reksen, O 2006 Milk culture results in a large Norwegian survey—effect of season, parity, days in milk, resistance and clustering. Journal of Dairy Science 89 1010–1023CrossRefGoogle Scholar
Østerås, O, Solbu, H, Refsdal, AO, Roalkvam, T, Filseth, O, & Minsaas, A 2007 Results and evaluation of thirty years of health recordings in Norwegian dairy cattle population. Journal of Dairy Science 90 4483–4497CrossRefGoogle ScholarPubMed
Park, YH, Fox, LK, Hamilton, MJ & Davis, C 1993 Suppression of proliferative response of BoCD4 T lymphocytes by activating BoCD8 T lymphocytes in the mammary gland of cows with Staphylococcus aureus mastitis. Journal of Veterinary Immunology and Immunopathology 36 137–151CrossRefGoogle ScholarPubMed
Rainard, P & Poutrel, B 1988 Effect of naturally occurring intramammary infections by minor pathogens on new infections by major pathogens in cattle. American Journal of Veterinary Research 49 327–329Google ScholarPubMed
Reksen, O, Sølverød, L, Branscum, AJ & Østerås, O 2006 Relationships between milk culture results, and treatment for clinical mastitis or culling in Norwegian dairy cattle. Journal of Dairy Science 89 2928–2937CrossRefGoogle ScholarPubMed
SAS/STAT User's Guide Version 6 second edition 1993 Inst., Inc., Cary NC, USAGoogle Scholar
Schukken, YH, Leslie, KE, Barnum, DA, Mallard, BA, Lumsden, JH, Dick, PC, Vessie, GH & Kehrli, ME 1999 Experimental Staphylococcus aureus intramammary challenge in late lactation dairy cows: Quarter and cow effects determining the probability of infection. Journal of Dairy Science 82 2393–2401CrossRefGoogle ScholarPubMed
Schukken, YH, Van De Geer, D, Grommers, FJ, Smith, JA & Brand, A 1989 Intramammary infections and risk factors for clinical mastitis in herd with low somatic cell counts in bulk milk. Veterinary Record 125 393–396CrossRefGoogle ScholarPubMed
Shu, Y & Klein, JP 2005 A SAS Macro for the positive stable frailty model. http://www.biostat.mcw.edu/software/ps_frail.macro.txtGoogle Scholar
Shu, Y & Klein, JP 1999 A SAS macro for the positive frailty model. American Statistic Association Procedure, Statistical Computing section, USA, pp. 47–52Google Scholar
Sol, J, Sampimon, OC, Snoep, J & Schukken, YH 1994 Factors associated with bacteriological cure after dry cow treatment after subclinical staphylococcal mastitis. Journal of Dairy Science 77 75–79CrossRefGoogle ScholarPubMed
Sutra, L & Poutrel, B 1993 Virulence factors involved in the pathogenesis of bovine intramammary infections due to Staphylococcus aureus. Journal of Medical Microbiology 40 79–89CrossRefGoogle Scholar
Swinkels, JM, Hogeveen, H & Zadoks, RN 2005 A partial budget model to estimate economic benefits of lactational treatment of subclinical Staphylococcus aureus mastitis. Journal of Dairy Science 88 4273–4287CrossRefGoogle ScholarPubMed
Walter, SD, Feinstein, AR & Well, CK 1987 Coding ordinal independent variables in multiple regression analyses. American Journal of Epidemiology 125 319–323CrossRefGoogle ScholarPubMed
Whist, AC, Østerås, O & Sølverød, L 2007a Staphylococcus aureus and Streptococcus dysgalactiae in Norwegian herds after introduction of selective dry cow therapy and teat dipping. Journal of Dairy Research 74 1–8CrossRefGoogle ScholarPubMed
Whist, AC, Østerås, O & Sølverød, L 2007b Streptococcus dysgalactiae isolates at calving and lactation performance within the same lactation. Journal of Dairy Science 90 766–778CrossRefGoogle ScholarPubMed
Whist, AC & Østerås, O 2007c Associations between somatic cell counts at calving or prior to drying-off and clinical mastitis in the remaining or subsequent lactation. Journal of Dairy Research 74 66–73CrossRefGoogle ScholarPubMed
Wood, PDP 1967 Algebraic model of the lactation curve in cattle. Nature 216 164–165CrossRefGoogle Scholar
Zadoks, RN, Allore, HG, Barkema, HW, Sampimon, OC, Wellenberg, GJ, Grohn, YT & Shukken, YH 2001 Cow and quarter level risk factors for Streptococcus uberis and Staphylococcus aureus mastitis. Journal of Dairy Science 84 2649–2663CrossRefGoogle ScholarPubMed
Zecconi, A, Binda, E, Borromeo, V & Piccinini, R 2005 Relationship between some Staphylococcus aureus pathogenic factors and growth rates or somatic cell counts. Journal of Dairy Research 72 203–208CrossRefGoogle ScholarPubMed