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Effect of chronic pain associated with lameness on plasma cortisol concentrations in sheep: a field study
S J Ley1, A E Waterman, A Livingston
1Department of Clinical Veterinary Science, Division of Companion Animals (Surgery), Langford, Bristol.
Abstract:
Plasma cortisol concentrations were measured in two groups of sheep taken from 29 flocks in north Devon. The first group were healthy adult females and the second group were adult females suffering from footrot in one forefoot. These sheep were assessed for the severity of the lesion and the level of lameness and assigned a score. The plasma cortisol concentration was significantly higher in the lame sheep than in the healthy sheep and remained so for up to three months after the apparent resolution of the clinical lesion. There was no correlation between the severity of the footrot and the concentration of plasma cortisol.