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The influence of housing systems and feeding regimes on the claw condition and the occurrence of keratinopathogenic fungi in fattening bulls
Ch. Stanek, P. Karall, J. Frickh, M...
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In central Europe, various housing systems, including older tying stall systems, boxes with solid or slatted floors and in increasing frequency outdoor paddocks, are common for fattening bulls. Also different feeding regimes are applied. Comparatively little is known about the influence of the different systems on the claw condition and on time dependent development of pathological changes. Analyses of the occurrence of keratinopathogenic fungi should lead to a better understanding of the pathogenesis of poor claw horn quality and claw diseases.
60 young Simmenthal bulls, purchased on auctions of the Austrian breeding organisations, were divided into two groups on one large research farm: one group was kept in a tying stall, the other group was kept in an open paddock. Each of these groups was subdivided into two subgroups of 15 bulls each. One subgroup of each housing system was fed a pelleted complete feed ad lib, the other two subgroups were fed with maize silage ad lib and concentrate added. The observation period followed an accommodation period, started on day 75 and ended with slaughter on day 450 of the life of the fattening bulls (Karall, 2001). ...
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