'''Increases''' in PCV usually occur in dehydrated animals in which the blood cells come to occupy a greater proportion of the blood volume, a process called '''haemoconcentration''' or '''relative polycythaemia'''. Other reasons for increases in PCV include: | '''Increases''' in PCV usually occur in dehydrated animals in which the blood cells come to occupy a greater proportion of the blood volume, a process called '''haemoconcentration''' or '''relative polycythaemia'''. Other reasons for increases in PCV include: |