ABSTRACT
Seroprevalence study was carried out on 470 camels [123 native camels in contact with other farm animals in Assiut and El-Wadi El Gadid Governorates and 347 imported camels from Sudan, through Daraw, Aswan Governorate] these camels with different ages and sexes were examined for detection of brucella antibodies. A high incidence of seroreactive cases was observed among native camels [2.43%, 12.19%, 4.87% and 2.43%] while it was [0.57%; 0.86%; 0.29% and 0.29%] among imported camels using Rose Bengal plate Test, Buffered Acidified plate Antigen Test, Tube Agglutination Test and Rivanol test, respectively. Quantitatively, four serum samples were true seropositive - without any clinical signs - with a titer ranged from 1/25 to 1/400 using Rivanol test, while 3 serum samples were seroreactors with a titer of 1/40, 1/80 and 1/320 using TAT. Three [1.07%] of positive camels were adult over 4 years old and the remaining 1[0.52%] was young under 4 years old. It can be concluded that brucella seroprevelance in native camels was significantly different [P<0.05] than in imported ones, however no significant differences could be recorded based on the sex of the age. The study proved that Rose Bengal plate Test followed by Tube Agglutination. Test agreed with Rivanol test in the rapid diagnosis of brucellosis in camels