Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-28T04:56:11.390Z Has data issue: false hasContentIssue false
  • English
  • Français

Stochastic modelling to assess economic effects of treatment of chronic subclinical mastitis caused by Streptococcus uberis

Published online by Cambridge University Press:  09 October 2007

Wilma Steeneveld ,
Jantijn Swinkels  and
Henk Hogeveen
Wilma Steeneveld*
Affiliation:
Business Economics, Wageningen University, Wageningen, The Netherlands
Jantijn Swinkels
Affiliation:
Innovet Bovine Herd Health Consultancy, Noordbeemster, 1463 PJ, The Netherlands
Henk Hogeveen
Affiliation:
Business Economics, Wageningen University, Wageningen, The Netherlands Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
*
†For correspondence; e-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Chronic subclinical mastitis is usually not treated during the lactation. However, some veterinarians regard treatment of some types of subclinical mastitis to be effective. The goal of this research was to develop a stochastic Monte Carlo simulation model to support decisions around treatment of chronic subclinical mastitis caused by Streptococcus uberis. Factors in the model included the probability of cure after treatment, probability of the cow becoming clinically diseased, transmission of infection to other cows, and physiological effects of the infection. Using basic input parameters for Dutch circumstances, the average economic costs per cow of an untreated chronic subclinical mastitis case caused by Str. uberis in a single quarter from day of diagnosis onwards was €109. With treatment, the average costs were higher (€120). Thus, for the average cow, treatment was not efficient economically. However, the risk of high costs was much higher when cows with chronic subclinical mastitis were not treated. A sensitivity analysis showed that profitability of treatment of chronic subclinical Str. uberis mastitis depended on farm-specific factors (such as economic value of discarded milk) and cow-specific factors (such as day of diagnosis, duration of infection, amount of transmission to other cows and cure rate). Therefore, herd level protocols are not sufficient and decision support should be cow specific. Given the importance of cow-specific factors, information from the current model could be applied to automatic decision support systems.

Keywords

Subclinical mastitisantibiotic treatmenteconomicdairy cattleStreptococcus uberis
Type
Research Article
Information
Journal of Dairy Research , Volume 74 , Issue 4 , November 2007 , pp. 459 - 467
Copyright
Copyright © Proprietors of Journal of Dairy Research 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Allore, HG & Erb, HN 1998 Partial budget of the discounted annual benefit of mastitis control strategies. Journal of Dairy Science 81 2280–2292Google Scholar
Beaudeau, F, Ducrocq, V, Fourichon, C & Seegers, H 1995 Effect of disease on length of productive life of French Holstein dairy cows assessed by survival analysis. Journal of Dairy Science 78 103–117Google Scholar
DeLuyker, HA, Michanek, P, Wuyts, N, Van Oye, SN & Chester, ST 2001 We treat sick cows don't we? The case of subclinical mastitis. Proceedings National Mastitis Council Annual Meeting, pp. 170–174Google Scholar
DeLuyker, HA, Van Oye, SN & Boucher, JF 2005 Factors affecting cure and somatic cell count after pirlimycin treatment of subclinical mastitis in lactating cows. Journal of Dairy Science 88 604–614Google Scholar
De Vos, CJ & Dijkhuizen, AA 1998 Economic aspects of mastitis and mastitis prevention. Internal Report. Department of Animal Health Economics, Wageningen University, The Netherlands [in Dutch]Google Scholar
Dijkhuizen, AA, Renkema, JA & Stelwagen, J 1991 Modelling to support animal health control. Agricultural Economics 5 263–277CrossRefGoogle Scholar
Halasa, T, Huijps, K, Østerås, O & Hogeveen, H 2007 Economic effects of bovine mastitis and mastitis management: A review. Veterinary Quarterly 29 18–31CrossRefGoogle ScholarPubMed
Hortet, P & Seegers, H 1998 Loss in milk yield and related composition changes resulting from clinical mastitis in dairy cows. Preventive Veterinary Medicine 37 1–20CrossRefGoogle ScholarPubMed
Hortet, P & Seegers, H 1998 Calculated milk production losses associated with elevated somatic cell counts in dairy cows: review and critical discussion. Veterinary Research 29 497–510Google ScholarPubMed
Houben, EH, Huirne, RB, Dijkhuizen, AA & Kristensen, AR 1994 Optimal replacement of mastitis cows determined by a hierarchic Markov Process. Journal of Dairy Science 77 2975–2993Google Scholar
Huijps, K & Hogeveen, H 2007 Stochastic modeling to determine the economic effects of blanket, selective, and no dry cow therapy. Journal of Dairy Science 90 1225–1234CrossRefGoogle ScholarPubMed
Jayarao, BM, Gillespie, BE, Lewis, MJ, Dowlen, HH & Oliver, SP 1999 Epidemiology of Streptococcus uberis intramammary infections in a dairy herd. Zentralblatt Fur Veterinarmedizin [B] 46 433–442Google Scholar
Lam, TGJM 1996 Dynamics of bovine mastitis: a field study in low somatic cell count herds. PhD Dissertation, Utrecht University, The NetherlandsGoogle Scholar
McDougall, S, Parkinson, TJ, Leyland, M, Anniss, FM & Fenwick, SG 2004 Duration of infection and strain variation in Streptococcus uberis isolated from cows’ milk. Journal of Dairy Science 87 2062–2072Google Scholar
McInerney, JP, Howe, KS & Schepers, JA 1992 A framework for the economic analysis of disease in farm livestock. Preventive Veterinary Medicine 13 137–154Google Scholar
NRS [Nederlands Rundvee Syndicaat] 2005 Annual statistics CR-Delta, Arnhem, The NetherlandsGoogle Scholar
Oliver, SP, Gillespie, BE, Headrick, SJ, Moorehead, H, Lunn, P, Dowlen, HH, Johnson, DL, Lamar, KC, Chester, ST & Moseley, WM 2004 Efficacy of extended ceftiofur intramammary therapy for treatment of subclinical mastitis in lactating dairy cows. Journal of Dairy Science 87 2393–2400Google Scholar
Østergaard, S, Chagunda, MGG, Friggens, NC, Bennedsgaard, TW & Klaas, IC 2005 A stochastic model simulating pathogen-specific mastitis control in a dairy herd. Journal of Dairy Science 88 4243–4257Google Scholar
Palisade, 2002 Guide to Using @Risk, Palisade Corporation, Newfield, NY, USAGoogle Scholar
Poelarends, JJ, Hogeveen, H, Sampimon, OC & Sol, J 2001 Monitoring subclinical mastitis in Dutch dairy herds. Proceedings of the 2nd International Symposium on Mastitis and Milk Quality. Vancouver, CanadaGoogle Scholar
Pÿorälä, S & Mattila, T 1987 Inflammatory changes during experimental bovine mastitis induced by Staphylococcus aureus, Streptococcus dysgalactiae and Streptococcus uberis. Journal of Veterinary Medicine A 34 574–581Google Scholar
Samoré, AB, Schneider, M del P, Canavesi, F, Bagnato, A & Groen, AF 2003 Relationship between somatic cell count and functional longevity assessed using survival analysis in Italian Holstein–Friesian cows. Livestock Production Science 80 211–220Google Scholar
Schepers, AJ, Lam, TJGM, Schukken, YH, Wilmink, JBM & Hanekamp, WJA 1997 Estimation of variance components for somatic cell counts to determine thresholds for uninfected quarters. Journal of Dairy Science 80 1833–1840Google Scholar
Schrick, FN, Hockett, ME, Saxton, AM, Lewis, MJ, Dowlen, HH & Oliver, SP 2001 Influence of subclinical mastitis during early lactation on reproductive parameters. Journal of Dairy Science 84 1407–1412Google Scholar
Sol, J, Sampimon, OC, Snoep, JJ & Schukken, YH 1997 Factors associated with bacteriological cure during lactation after therapy for subclinical mastitis caused by Staphylococcus aureus. Journal of Dairy Science 80 2803–2808Google Scholar
Sol, J, Sampimon, OC, Barkema, HW & Schukken, YH 2000 Factors associated with cure after therapy of clinical mastitis caused by Staphylococcus aureus. Journal of Dairy Science 83 278–284CrossRefGoogle ScholarPubMed
St. Rose, SG, Swinkels, JM, Kremer, WDJ, Kruitwagen, CLJJ & Zadoks, RN 2003 Effect of penethamate hydriodide treatment on bacteriological cure, somatic cell count and milk production of cows and quarters with chronic subclinical Streptococcus uberis or Streptococcus dysgalactiae infection. Journal of Dairy Research 70 387–394Google Scholar
Stott, AW, Jones, GM, Gunn, GJ, Chase-Topping, M, Humphry, RW, Richardson, H & Logue, DN 2002 Optimum replacement policies for the control of subclinical mastitis due to S. aureus in dairy cows. Journal of Agricultural Economics 53 627–644CrossRefGoogle Scholar
Swinkels, JM, Rooijendijk, JGA, Zadoks, RN & Hogeveen, H 2005a Use of partial budgeting to determine the economic benefits of antibiotic treatment of chronic subclinical mastitis caused by Streptococcus uberis or Streptococcus dysgalactiae. Journal of Dairy Research 72 75–85Google Scholar
Swinkels, JM, Hogeveen, H & Zadoks, RN 2005b A partial budget model to estimate economic benefits of lactational treatment of subclinical Staphylococcus aureus mastitis. Journal of Dairy Science 88 4273–4287Google Scholar
Todhunter, DA, Smith, KL & Hogan, JS 1995 Environmental Streptococcal intramammary infections of the bovine mammary gland. Journal of Dairy Science 78 2366–2374CrossRefGoogle ScholarPubMed
Van der Walle, K 2004 Gebruikswaarde van melkvee. Internal report. Animal Sciences Group Wageningen UR, LelystadGoogle Scholar
Vose, D 2000 Risk Analysis: A Quantitative Guide, Second Edition. Chichester, UK: WileyGoogle Scholar
Vosough-Ahmadi, B, Velthuis, AG, Hogeveen, H & Huirne, RB 2006 Simulating Escherichia coli O157:H7 transmission to assess effectiveness of interventions in Dutch dairy-beef slaughterhouses. Preventive Veterinary Medicine 77 15–30Google Scholar
Wood, PDP 1967 Algebraic model of the lactation curve in cattle. Nature 216 164–165Google Scholar
Yalcin, C, Stott, AW, Logue, DN & Gunn, J 1999 The economic impact of mastitis-control procedures used in Scottish dairy herds with high bulk-tank somatic cell counts. Preventive Veterinary Medicine 41 135–149CrossRefGoogle ScholarPubMed
Zadoks, RN, Allore, HG, Barkema, HW, Sampimon, OC, Gröhn, YT & Schukken, YH 2001 Analysis of an outbreak of Streptococcus uberis mastitis. Journal of Dairy Science 84 590–599CrossRefGoogle ScholarPubMed
Zadoks, RN, Gillespie, BE, Barkema, HW, Sampimon, OC, Oliver, SP & Schukken, YH 2003 Clinical, epidemiological and molecular characteristics of Streptococcus uberis infections in dairy herds. Epidemiology and Infection 130 335–349CrossRefGoogle ScholarPubMed