Impact of an automatic teat dipping and cluster flushing system on iodine residuals, milking characteristics and teat coverage

P.H. Hogewerf; A.H. Ipema; C.J.A.M. de Koning; H.J. Schuiling; B.A. Slaghuis; V. Tancin; I. Ohnstad; H.W. Barkema

Impact of an automatic teat dipping and cluster flushing system on iodine residuals, milking characteristics and teat coverage

In: Mastitis control

Authors:

P.H. Hogewerf

P.H. Hogewerf ¹Animal Sciences Group of Wageningen UR, Edelhertweg 15, 8219PH Lelystad, The Netherlands

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A.H. Ipema

A.H. Ipema ¹Animal Sciences Group of Wageningen UR, Edelhertweg 15, 8219PH Lelystad, The Netherlands

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C.J.A.M. de Koning

C.J.A.M. de Koning ¹Animal Sciences Group of Wageningen UR, Edelhertweg 15, 8219PH Lelystad, The Netherlands

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H.J. Schuiling

H.J. Schuiling ¹Animal Sciences Group of Wageningen UR, Edelhertweg 15, 8219PH Lelystad, The Netherlands

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B.A. Slaghuis

B.A. Slaghuis ¹Animal Sciences Group of Wageningen UR, Edelhertweg 15, 8219PH Lelystad, The Netherlands

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V. Tancin

V. Tancin ²Research Institute for Animal Production, Hlohovaká 2, 949 92 Nitra, Slovak Republic

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I. Ohnstad

I. Ohnstad ³The Dairy Group, New Agriculture House, Blackbrook Park Avenue, Taunton TA1 2PX, United Kingdom

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, and

H.W. Barkema

H.W. Barkema ⁴University of Calgary, G #359, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada Corresponding author: pieter.hogewerf@wur.nl

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Type:: Chapter

Pages:: 349–356

DOI:: https://doi.org/10.3920/9789086866496_083

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Post-milking teat disinfection is an effective management practice in the reduction of the prevalence and incidence of mastitis. However, dipping and also spraying is time and labour consuming and may reduce parlour efficiency. A comparison was made between an automatic dipping and flushing (ADF) system and a reference manual dipping system. For two times 6 days, teats of 6 cows were disinfected using the ADF-system while teats of 6 other cows were dipped manually in a cross-over design. Milk samples for iodine content were collected 16 times. Vacuum drop and vacuum fluctuation in the short milk tube were estimated in the WUR-ASG milk recording laboratory using water instead of milk (vacuum level 40 kPa). In a challenge test the cluster flushing was evaluated by using an inoculum of Streptococcus agalactiae mixed with pasteurised milk. No difference between ADF system and reference manual dipping system were found in: milk yield, milk duration, average and maximum milk flow, average vacuum and cyclic vacuum variation. Differences between the ADF system and manual dipping were found for teat coverage (4 level visual scoring system): 2.92 versus 3.80 and the iodine content of the milk 155 versus 111 μg/l. It was, however, far below the regulatory limit of 500 μg/l. When challenged with an inoculum of Streptococcus agalactiae in pasteurised milk on the inside of the liners, the ADF system reduced Streptococcus agalactiae by 99.9% compared to no cleaning.

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Mastitis control

From science to practice

E-Book ISBN:: 9789086866496

Publisher:: Wageningen Academic

Print Publication Date:: 30 Oct 2008

Subjects
- Life Sciences

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Impact of an automatic teat dipping and cluster flushing system on iodine residuals, milking characteristics and teat coverage

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Mastitis control

From science to practice

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