The effect of season on somatic cell count and the incidence of clinical mastitis

Journal of Dairy Science

Volumn 90, Issue 4, 2007, Pages 1704-1715

  Olde Riekerink, R G M ^a   Barkema, H W ^b   Stryhn, H ^a  

^a UNIVERSITY OF PRINCE EDWARD ISLAND   (Canada)

^b UNIVERSITY OF CALGARY   (Canada)

Author keywords

Incidence; Mastitis; Season; Somatic cell count

Indexed keywords

ESCHERICHIA COLI; STREPTOCOCCUS; STREPTOCOCCUS AGALACTIAE; STREPTOCOCCUS DYSGALACTIAE; STREPTOCOCCUS UBERIS;

EID: 35748939361     PISSN: 00220302     EISSN: 15253198     Source Type: Journal    
DOI: 10.3168/jds.2006-567     Document Type: Article

References (50)

1. Ali, A. K. A., and G. E. Shook. 1980. An optimum transformation for somatic cell concentration in milk. J. Dairy Sci. 63:487-490.
2. Barkema, H. W., Y. H. Schukken, T. J. G. M. Lam, M. L. Beiboer, G. Benedictus, and A. Brand. 1999a. Management practices associated with the incidence rate of clinical mastitis. J. Dairy Sci. 82:1643-1654.
3. Barkema, H. W., Y. H. Schukken, T. J. G. M. Lam, M. L. Beiboer, H. Wilmink, G. Benedictus, and A. Brand. 1998. Incidence of clinical mastitis in dairy herds grouped in three categories by bulk milk somatic cell counts. J. Dairy Sci. 81:411-419.
4. Barkema, H. W., J. D. Van der Ploeg, Y. H. Schukken, T. J. Lam, G. Benedictus, and A. Brand. 1999b. Management style and its association with bulk milk somatic cell count and incidence rate of clinical mastitis. J. Dairy Sci. 82:1655-1663.
5. Bodoh, G. H., W. J. Battista, L. H. Schultz, and R. P. Johnston. 1976. Variation in somatic cell counts in dairy herd improvement milk samples. J. Dairy Sci. 59:1119-1123.
6. Clements, A. C., D. U. Pfeiffer, and D. Hayes. 2005. Bayesian spatiotemporal modeling of national milk-recording data of seasonal-calving New Zealand dairy herds. Prev. Vet. Med. 71:183-196.
7. Cullen, G. A., and T. W. A. Little. 1969. Isolation of Streptococcus uberis from the rumen of cows and from soil. Vet. Rec. 85:115-118.
8. De Haas, Y., H. W. Barkema, Y. H. Schukken, and R. F. Veerkamp. 2005. Associations between somatic cell count patterns and the incidence of clinical mastitis. Prev. Vet. Med. 67:55-68.
9. De Haas, Y., R. F. Veerkamp, H. W. Barkema, Y. T. Gröhn, and Y. H. Schukken. 2004. Associations between pathogen-specific cases of clinical mastitis and somatic cell count patterns. J. Dairy Sci. 87:95-105.
10. Dohoo, I. R., A. H. Meek, and S. W. Martin. 1984. Somatic cell counts in bovine milk: Relationships to production and clinical episodes of mastitis. Can. J. Comp. Med. 48:130-135.
11. Erskine, R. J., R. J. Eberhart, L. J. Hutchinson, S. B. Spencer, and M. A. Campbell. 1988. Incidence and types of clinical mastitis in dairy herds with high and low somatic cell counts. J. Am. Vet. Med. Assoc. 192:761-765.
12. Faye, B., L. Perochon, N. Dorr, and P. Gasqui. 1998. Relationship between individual-cow udder health status in early lactation and dairy cow characteristics in Brittany, France. Vet. Res. 29:31-46.
13. Goldberg, J. J., E. E. Wildman, J. W. Pankey, J. R. Kunkel, D. B. Howard, and B. M. Murphy. 1992. The influence of intensively managed rotational grazing, traditional continuous grazing, and confinement housing on bulk tank milk quality and udder health. J. Dairy Sci. 75:96-104.
14. Green, M. J., A. J. Bradley, H. Newton, and W. J. Browne. 2006. Seasonal variation of bulk milk somatic cell counts in UK dairy herds: Investigations of the summer rise. Prev. Vet. Med. 74:293-308.
15. Green, M. J., L. E. Green, Y. H. Schukken, A. J. Bradley, E. J. Peeler, H. W. Barkema, Y. De Haas, V. J. Collis, and G. F. Medley. 2004. Somatic cell count distributions during lactation predict clinical mastitis. J. Dairy Sci. 87:1256-1264.
16. Gröhn, Y. T., D. J. Wilson, R. N. Gonzalez, J. A. Hertl, H. Schulte, G. Bennett, and Y. H. Schukken. 2004. Effect of pathogen-specific clinical mastitis on milk yield in dairy cows. J. Dairy Sci. 87:3358-3374.
17. Hogan, J. S., and K. L. Smith. 1997. Bacteria counts in sawdust bedding. J. Dairy Sci. 80:1600-1605.
18. Hogan, J. S., K. L. Smith, K. H. Hoblet, P. S. Schoenberger, D. A. Todhunter, W. D. Hueston, D. E. Pritchard, G. L. Bowman, L. E. Heider, and B. L. Brockett. 1989a. Field survey of clinical mastitis in low somatic cell count herds. J. Dairy Sci. 72:1547-1556.
19. Hogan, J. S., K. L. Smith, K. H. Hoblet, D. A. Todhunter, P. S. Schoenberger, W. D. Hueston, D. E. Pritchard, G. L. Bowman, L. E. Heider, and B. L. Brockett. 1989b. Bacterial counts in bedding materials used on nine commercial dairies. J. Dairy Sci. 72:250-258.
20. Laevens, H., H. Deluyker, Y. H. Schukken, L. De Meulemeester, R. Vandermeersch, E. De Muelenaere, and A. de Kruif. 1997. Influence of parity and stage of lactation on the somatic cell count in bacteriologically negative dairy cows. J. Dairy Sci. 80:3219-3226.
21. Littell, R. C., G. A. Milliken, W. W. Stroup, and R. D. Wolfinger. 1996. SAS System for Mixed Models. SAS Inst. Inc., Cary, NC. Makovec, J. A., and P. L. Ruegg. 2003. Results of milk samples submitted for microbiological examination in Wisconsin from 1994 to 2001. J. Dairy Sci. 86:3466-3472.
22. McDougall, S. 1998. Efficacy of two antibiotic treatments in curing clinical and subclinical mastitis in lactating dairy cows. N. Z. Vet. J. 46:226-232.
23. Morse, D., M. A. DeLorenzo, C. J. Wilcox, R. J. Collier, R. P. Natzke, and D. R. Bray. 1988. Climatic effects on occurrence of clinical mastitis. J. Dairy Sci. 71:848-853.
24. Neave, F. K., F. H. Dodd, R. G. Kingwill, and D. R. Westgarth. 1969. Control of mastitis in the dairy herd by hygiene and management. J. Dairy Sci. 52:696-707.
25. Norman, H. D., R. H. Miller, J. R. Wright, and G. R. Wiggans. 2000. Herd and state means for somatic cell count from dairy herd improvement. J. Dairy Sci. 83:2782-2788.
26. Oliver, S. P. 1998. Frequency of isolation of environmental mastitiscausing pathogens and incidence of new intramammary infections during the non-lactating period. Am. J. Vet. Res. 49:1789-1793.
27. Østerås, O., L. Sølverød, and O. Reksen. 2006. Milk culture results in a large Norwegian survey - Effects of season, parity, days in milk, resistance and clustering. J. Dairy Sci. 89:1010-1023.
28. Pankey, J. W., P. B. Pankey, R. M. Barker, J. H. Williamson, and M. W. Woolford. 1996. The prevalence of mastitis in primiparous heifers in eleven Waikato dairy herds. N. Z. Vet. J. 44:41-44.
29. Rasbash, J. W., H. Browne, M. Goldstein, M. Yang, I. Plewis, M. Healy, G. Woodhouse, D. Draper, I. Langford, and T. Lewis. 2000. A user's guide to MLwiN. Version 2.1. Institute of Education, London, UK.
30. Salsberg, E., A. H. Meek, and S. W. Martin. 1984. Somatic cell counts: Associated factors and relationship to production. Can. J. Comp. Med. 48:251-257.
31. Sargeant, J. M., Y. H. Schukken, and K. E. Leslie. 1998a. Ontario bulk milk somatic cell count reduction program: Progress and outlook. J. Dairy Sci. 81:1545-1554.
32. Sargeant, J. M., H. M. Scott, K. E. Leslie, M. J. Ireland, and A. Bashiri. 1998b. Clinical mastitis in dairy cattle in Ontario: Frequency of occurrence and bacteriological isolates. Can. Vet. J. 39:33-38.
33. Schukken, Y. H., Y. T. Gröhn, B. McDermott, and J. J. McDermott. 2003. Analysis of correlated discrete observations: Background, examples and solutions. Prev. Vet. Med. 59:223-240.
34. Schukken, Y. H., K. E. Leslie, A. J. Weersink, and S. W. Martin. 1992. Ontario bulk milk somatic cell count reduction program. 1. Impact on somatic cell counts and milk quality. J. Dairy Sci. 75:3352-3358.
35. Schukken, Y. H., A. Weersink, K. E. Leslie, and S. W. Martin. 1993. Dynamics and regulation of bulk milk somatic cell counts. Can. J. Vet. Res. 57:131-135.
36. Sears, P. M., B. S. Smith, P. B. English, P. S. Herer, and R. N. Gonzalez. 1990. Shedding pattern of Staphylococcus aureus from bovine intramammary infections. J. Dairy Sci. 73:2785-2790.
37. Simensen, E. 1976. Milk somatic cells in dairy cows kept on pasture or confined indoors during the summer. Nord. Vet. Med. 28:603-609.
38. Singer, J. D., and J. B. Willett. 1993. It's about time: Using discretetime survival analysis to study duration and the timing of events. J. Educ. Stat. 18:155-195.
39. Singer, J. D., and J. B. Willett. 2003. Applied Longitudinal Data Analysis. Modeling Change and Event Occurrence. Oxford University Press, Oxford, UK.
40. Smith, K. L., and J. S. Hogan. 1993. Environmental mastitis. Vet. Clin. North Am. Food Anim. Pract. 9:489-498.
41. Smith, K. L., D. A. Todhunter, and P. S. Schoenberger. 1985. Environmental mastitis: Cause, prevalence, prevention. J. Dairy Sci. 68:1531-1553.
42. Stolwijk, A. M., H. Straatman, and G. A. Zielhuis. 1999. Studying seasonality by using sine and cosine functions in regression analysis. J. Epidemiol. Community Health 53:235-238.
43. Swinkels, J. M., J. G. A. Rooijendijk, R. N. Zadoks, and H. Hogeveen. 2005. Use of partial budgeting to determine the economic benefits of antibiotic treatment of chronic subclinical mastitis caused by Streptococcus uberis or Streptococcus dysgalactiae. J. Dairy Res. 72:75-85.
44. Todhunter, D. A., K. L. Smith, and J. S. Hogan. 1995. Environmental streptococcal intramammary infections of the bovine mammary gland. J. Dairy Sci. 78:2366-2374.
45. Todhunter, D. A., K. L. Smith, J. S. Hogan, and P. S. Schoenberger. 1991. Gram-negative bacterial infections of the mammary gland in cows. Am. J. Vet. Res. 52:184-188.
46. Vigre, H., I. R. Dohoo, H. Stryhn, and M. E. Busch. 2004. Intra-unit correlations in seroconversion to Actinobacillus pleuropneumoniae and Mycoplasma hyopneumoniae at different levels in Danish multi-site pig production facilities. Prev. Vet. Med. 63:9-28.
47. Weisberg, S. 2005. Using the delta method to estimate a minimum or a maximum. Pages 120-122 in Applied Linear Regression. 3rd ed. Wiley Series in Probability and Statistics. Wiley-Interscience, New York, NY.
48. Whitaker, D. A., A. I. Macrae, and E. Burrough. 2004. Disposal and disease rates in British dairy herds between April 1998 and March 2002. Vet. Rec. 155:43-47.
49. Zadoks, R. N., B. E. Gillespie, H. W. Barkema, O. C. Sampimon, S. P. Oliver, and Y. H. Schukken. 2003. Clinical, epidemiological and molecular characteristics of Streptococcus uberis infections in dairy herds. Epidemiol. Infect. 130:335-349.
50. Zadoks, R. N., L. L. Tikofsky, and K. J. Boor. 2005. Ribotyping of Streptococcus uberis from a dairy's environment, bovine feces and milk. Vet. Microbiol. 109:257-265.