The activity of plasma pseudocholinesterase in the Arabian camel (Camelus dromedarius L.) in comparison to other animal species

The activity of pseudocholinesterase (PCHE) was measured in the plasma of healthy male and female Arabian camels (Camelus dromedarius), cattle (Bos aurus), sheep (Ovis aries), goats (Capra hircus), horses (Equus caballus), bustards (Chlamydotis undulata macqueeni), and rats (Rattus norvegicus). The PCHE activity in both male and female Arabian camels increased by about 40% with age. There were no differences in PCHE activity between young and old, or between nude and female camels. The enzyme activity was about 90% greater in 6-month old female rats than in male rats of the same age. It was also higher in bustards and horses than in the ruminants studied, including the Arabian camel.