Published online by Cambridge University Press: 02 September 2010
The LDH values in blood plasma of Pietrains and Large Whites are significantly different during moderate stress (sampling of blood), being higher in the Pietrains. The difference is largest in the LDH-5, the muscle iso-enzyme. Not only are the values higher, but the isoenzyme is also demonstrable in more individual animals.
More stressful situations (forced muscular exercise) result in a rise in plasma LDH-5 in both breeds; the rise is larger in the Pietrains. Two possible causes for the higher LDH-5 values in Pietrain blood plasma are suggested.