Shivering:Week-old blood

I have paired up a hound and shambles of equal fighting capacity. However, I have recently drained the hound of its zombie blood, and replaced it with blood extracted from a Breton corpse, which had lain for a week, rotting in the hot sun. When I return, having let it acclimate to its new supply of vital fluid, I expect the hound will perform with much less efficiency than normal.