Efficacy of a cloxacillin dry cow product for treatment of heifers on farms with a low and a high prevalence of heifer mastitis in The Netherlands

Otlis Sampimon; Jan Sol

Efficacy of a cloxacillin dry cow product for treatment of heifers on farms with a low and a high prevalence of heifer mastitis in The Netherlands

In: Mastitis in dairy production

Authors:

Otlis Sampimon

Otlis Sampimon Animal Health Service, Deventer, The Netherlands

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Jan Sol

Jan Sol Animal Health Service, Deventer, The Netherlands

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Type:: Chapter

Pages:: 278–284

DOI:: https://doi.org/10.3920/9789086865505_039

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A high percentage of heifers have an intramammary infection (IMI) at calving. Treatment with antibiotics before calving has been shown to reduce the number of IMI’s at calving and to increase milk-production.

To quantify this effect a trial was carried out on 13 Dutch dairy farms where 196 heifers were treated with 600 mg dynomilled cloxacillin (Orbenin Extra Dry Cow, Pfizer®) 8-10 weeks before the expected calving date. Another 196 heifers served as untreated controls. An employee of the Animal health Service performed the random selection and treatment. Bacteriological culturing and determination of the somatic cell count (SCC) was carried out at calving and repeated 10 days later. All farms recorded milk-production and cow SCC.

There was a difference between farms. Farms with less than 15% of heifers with a cow SCC above 150.000 cells/ml at the start of the trial were considered to have a low prevalence of heifer mastitis (LPF group) while farms with over 15% were considered as high prevalence farms (HPF group). The expected 305-day milk-production, in the treated heifers, was significantly higher (496L) in the HPF group in comparison with the untreated animals but this difference was only 77L (not significant) in the LPF group. In both groups of farms the cow SCC was significantly lower in the treated heifers compared to the untreated controls.

It is concluded that treatment of heifers is beneficial on HPF but not on LPF farms. Determination of the causes of heifer mastitis is recommended on HPF farms.

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Mastitis in dairy production

Current knowledge and future solutions

E-Book ISBN:: 9789086865505

Publisher:: Wageningen Academic

Print Publication Date:: 24 Oct 2005

Subjects
- Life Sciences

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Efficacy of a cloxacillin dry cow product for treatment of heifers on farms with a low and a high prevalence of heifer mastitis in The Netherlands

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Mastitis in dairy production

Current knowledge and future solutions

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