By Ley, S. J. and Livingston, A. and Waterman, A. E., Research in Veterinary Science, 1996
Description
Cows lame in 1 hind limb and 5 to 10 healthy cows from each of 8 dairy farms were studied. The threshold response to a mechanical nociceptive stimulus was measured on the affected hind limb just below the tarsus, using a modification of an air driven device. The pressure applied was gradually increased until the cow responded by raising or shaking the leg. Blood was collected from each cow and plasma cortisol and catecholamine concentrations were measured by radioimmunoassay and HPLC, respectively. The threshold response to a nociceptive stimulus was significantly lower on the lame hind limb of lame cows than on the same limb of sound cows. There were no significant differences between the concentrations of cortisol, noradrenaline, adrenaline or dopamine in the blood plasma of the sound and lame cows
Cows lame in 1 hind limb and 5 to 10 healthy cows from each of 8 dairy farms were studied. The threshold response to a mechanical nociceptive stimulus was measured on the affected hind limb just below the tarsus, using a modification of an air driven device. The pressure applied was gradually increased until the cow responded by raising or shaking the leg. Blood was collected from each cow and plasma cortisol and catecholamine concentrations were measured by radioimmunoassay and HPLC, respectively. The threshold response to a nociceptive stimulus was significantly lower on the lame hind limb of lame cows than on the same limb of sound cows. There were no significant differences between the concentrations of cortisol, noradrenaline, adrenaline or dopamine in the blood plasma of the sound and lame cows
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