A grand total of 180 swabs representing 60 bovine carcasses were collected under aseptic conditions from different parts (hind quarter, abdomen and fore quarter) of the carcass surface at 2 Basatin abattoir halls in summer. Collected samples were subjected to bacteriological examination and the results of APC in the following region A1, A2, A3, B1, B2, B3 in hall 1 were 3.8 x104 ± 3.4x 10, 3.5 x104 ± 2.1 x103, 4.7 x104 ± 3.1 x103, 3.3 x104 ± 1.1 x103, 3.3 x104 ± 4.4 x103, 4.4 x104 ± 4.3 x103. Concerning hall 2, such results were 4.6 x104 ± 9.9 x103, 5.7 x104 ± 9.2 x103, 4 x104 ± 2.7 x103, 6.4 x104 ± 3.9 x103, 3.3 x104 ± 4.6 x103 and 6 x104 ± 4.8 x103 respectively. On the other hand, Salmonella Typhimurium was isolated from the carcass swabs at a percentage 2.75% from A1, A2, B2, B3 parts. The analysis was carried out and the recommendations showed that the Salmonella Typhimurium antigenic structure acc. To serological identification was somatic (O) antigen 1, 4, (5), 12 and flagellar (H) antigen phase 1:1, phase 2:2.