Economic comparison of common treatment protocols and J5 vaccination for clinical mastitis in dairy herds using optimized culling decisions

Kessels, J. A., Cha, E., Johnson, S. K., Welcome, F. L., Kristensen, A. R. and Grohn, Y. T. (2015) Economic comparison of common treatment protocols and J5 vaccination for clinical mastitis in dairy herds using optimized culling decisions. Journal of Dairy Science, 99 5: 1-10. doi:10.3168/jds.2015-10385


Author Kessels, J. A.
Cha, E.
Johnson, S. K.
Welcome, F. L.
Kristensen, A. R.
Grohn, Y. T.
Title Economic comparison of common treatment protocols and J5 vaccination for clinical mastitis in dairy herds using optimized culling decisions
Journal name Journal of Dairy Science   Check publisher's open access policy
ISSN 1525-3198
0022-0302
Publication date 2015-09-11
Sub-type Article (original research)
DOI 10.3168/jds.2015-10385
Open Access Status Not Open Access
Volume 99
Issue 5
Start page 1
End page 10
Total pages 10
Place of publication New York, NY, United States
Publisher Elsevier
Language eng
Abstract This study used an existing dynamic optimization model to compare costs of common treatment protocols and J5 vaccination for clinical mastitis in US dairy herds. Clinical mastitis is an infection of the mammary gland causing major economic losses in dairy herds due to reduced milk production, reduced conception, and increased risk of mortality and culling for infected cows. Treatment protocols were developed to reflect common practices in dairy herds. These included targeted therapy following pathogen identification, and therapy without pathogen identification using a broad-spectrum antimicrobial or treating with the cheapest treatment option. The cost-benefit of J5 vaccination was also estimated. Effects of treatment were accounted for as changes in treatment costs, milk loss due to mastitis, milk discarded due to treatment, and mortality. Following ineffective treatments, secondary decisions included extending the current treatment, alternative treatment, discontinuing treatment, and pathogen identification followed by recommended treatment. Average net returns for treatment protocols and vaccination were generated using an existing dynamic programming model. This model incorporates cow and pathogen characteristics to optimize management decisions to treat, inseminate, or cull cows. Of the treatment protocols where 100% of cows received recommended treatment, pathogen-specific identification followed by recommended therapy yielded the highest average net returns per cow per year. Out of all treatment scenarios, the highest net returns were achieved with selecting the cheapest treatment option and discontinuing treatment, or alternate treatment with a similar spectrum therapy; however, this may not account for the full consequences of giving nonrecommended therapies to cows with clinical mastitis. Vaccination increased average net returns in all scenarios.
Keyword Clinical mastitis
Dairy cow
Dynamic programming
Economic
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Veterinary Science Publications
 
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