Bio-economic modelling of intramammary infection in Dutch dairy cattle

T. Halasa; M. Nielen; R.B.M. Huirne; H. Hogeveen

Bio-economic modelling of intramammary infection in Dutch dairy cattle

In: Mastitis control

Authors:

T. Halasa

T. Halasa ¹Departement of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80151, 3508 TD Utrecht, the Netherlands

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M. Nielen

M. Nielen ¹Departement of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80151, 3508 TD Utrecht, the Netherlands

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R.B.M. Huirne

R.B.M. Huirne ²Business Economics Group, Wageningen University, P.O. Box 8130, 6706 KN Wageningen, the Netherlands Corresponding author: T.H.Halasa@uu.nl

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, and

H. Hogeveen

H. Hogeveen ¹Departement of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80151, 3508 TD Utrecht, the Netherlands
²Business Economics Group, Wageningen University, P.O. Box 8130, 6706 KN Wageningen, the Netherlands Corresponding author: T.H.Halasa@uu.nl

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Type:: Chapter

Pages:: 415–422

DOI:: https://doi.org/10.3920/9789086866496_096

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Dynamic processes do play an important role in the pathogenesis of intramammary infections (IMI). However, the dynamics of IMI were not considered in previous models to estimate the economic impact of IMI. A bio-economic model that includes the dynamics of infection was developed to simulate IMI caused by Staphylococcus aureus, Streptococcus uberis, Streptococcus dysagalactiae, and Escherichia coli to estimate there economic impact in Dutch dairies. The model simulates 100 dairy cows in a quota situation for one year. The dynamics of IMI were incorporated based on a Reed-Frost model for S. aureus, S. uberis, and S. dysagalactiae IMI, and based on a Greenwood model for E. coli IMI. Economic analysis was conducted per pathogen for clinical and subclinical IMI; separately. The model was validated based on literature methods and deemed a credible and valid. The total annual net costs varied widely for S. aureus, clinical or subclinical IMI costs were €1497 (0-4867) and 1097 (0-3640) per herd; respectively. Most important factors contributing to the total net cost were culling and milk production loss. The total annual net cost increased exponentially with the increase in the transmission rate of infection and was highly sensitive in case of S. aureus IMI. The relationship seemed linear in case of E. coli IMI. The model is a good tool to incorporate IMI management to provide precise economic advices for decision making.

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Mastitis control

From science to practice

E-Book ISBN:: 9789086866496

Publisher:: Wageningen Academic

Print Publication Date:: 30 Oct 2008

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- Life Sciences

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Bio-economic modelling of intramammary infection in Dutch dairy cattle

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Mastitis control

From science to practice

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