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Type of publication: Diploma Thesis
Type of document:

Year: 2010

Authors: Gasser, Christoph

Title: Vergleich der mittels Accelerometer erhobenen Beschleunigungswerte mit den klinisch diagnostizierten Lahmheitsgraden bei Rindern.

Source: Diplomarbeit, Vet. Med. Univ. Wien, pp. 113.


Advisor(s):

Kofler Johann
Schramel Johannes

Reviewer(s):
Kofler Johann
Peham Christian
Schramel Johannes

Vetmed Research Units:
University Equine Clinic, Clinical Unit of Equine Surgery


Abstract:
The aim of the research was a comparison of the data achieved by the accelerometer and the clinical diagnosed lameness. 39 cattle in total were part of the research. 18 of them were without lameness, 15 were classified as moderately lame and 6 as high- grade lame. The clinical evaluation of the lameness was executed by two independent investigators, C.G. and J.K. By means of the accelerometer were measured the acceleration in vertical (z), longitudinal (x) and lateral direction (y) of the cattle. Some axis intercepts were abstracted of the generated curve chart for a further analysis. Firstly, with the help of the axis intercepts, the rate of the cycle of movement was calculated, secondly there was generated the standard deviation for the x-, y- and z- axis as well as the standard deviation of the value of the vectors. The rate of the cycle of movement was related to the respective standard deviations. For the cattle without lameness it was possible to identify that the relation of each axis and the value of the vectors was linear. With the increasing rate of the cycle of movement also the standard deviation for the x-, yand z- axis and the sum of the vectors rose. This linear relation could also be observed at the moderately lame cattle. Regarding the high- grade lame cattle it was no more possible to identify a significant linear relationship. Based on the data of the cattle without lameness were made a comparison with the moderately lame and high- grade lame cattle. The percentage rate of conformance between the clinical diagnose and the result achieved by means of the accelerometer was about 74,07% at the cattle without lameness, 73,33% at moderately lame and 88,81% at high- grade lame cattle.


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