Frequency studies and clinical observations in bovine laminitis [cattle, hoof diseases]
1980
Andersson, L. (Veterinaerinraettningen, Skara (Sweden))
Clinical investigation and analysis of the rumen fluid were carried out in 75 cows and heifers with clinically established laminitis. The laminitis cases could, according to the clinical symptoms, be subdivided into cases without and with general affection respectively. In laminitis without general affection only local symptoms in the extremities existed, while in laminitis with general affection general symptoms such as fever, increased heart and respiratory rate, diminished appetite and sweating were also observed. The designations 'with' and 'without' general affection in laminitis are considered to reflect the varying intensity of the disease and would therefore be an adequate basis for classification from the clinical aspect. More than half of the laminitis cases occurred during the period 30 days before to 30 days after parturition, due to the changes in feeding practices in this period. The peak prevalence of laminitis cases in primiparae, which occurred in the autumn, was explained by the concentration of calvings to this period. An overrepresentation of laminitis cases was observed in animals which calved in October or November. This was deemed to be due to changes in feeding, which were accentuated in the beginning of the stabling period, and to alteration of the bedding
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