Background: Physiological and biochemical characteristics have been shown to effect on body health and functions. 
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Methods: Camel farm in Riyadh area bred Majaheem and Waddah breeds under extensive management system were followed for physiological and biochemical characteristics. Number of insemination per pregnancy, rectal temperature, pulse rate and SPO2 were monitored. In addition, blood samples were collected for hematology and plasma biochemistry profiles. 
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Result: The results indicated that number of insemination per pregnancy were significantly lower in Waddah she-camels if compared to Majaheem ones. In addition, rectal temperature (&deg;C) was increased (P&lt;0.01) in Majaheem she-camel group. Furthermore, pulse rate was higher (P&lt;0.05) of Majaheem she-camel group whereas SPO2 values were not differed between groups. The Majaheem group had significantly lower (P&lt;0.0001) RBCs counts compared to Waddah group. Similarly, the Majaheem group had a lower PCV (24.0%) compared to Waddah group (29.80%). In addition, the Majaheem group also had lower hemoglobin levels (11.0 g/dl) compared to Waddah group (12.0 g/dl). The Majaheem group had lower (P&lt;0.0001) WBCs count and their types compared to Waddah group. The Majaheem group had significantly lower values in all of plasma biochemical profiles if compared to Waddah group. It could be concluded that physiological, hematological and plasma profiles might be differed due to camel breeds and grazing system conditions.

Physiological and Biochemical Characteristics of Majaheem and Waddah Camel Breeds under Extensive Management System