Salmonellosis in chickens in Upper Egypt

Bacteriological examination of 1250 chickens showed that Salmonella could be isolated from 106 [8.48%]. The most frequent isolations were from the gall bladder followed by liver and intestinal contents. Twelve different serotypes could be identified. Salmonella pullorum-gallinarum was the predominant [50.00%] followed by S. typhimurium [16.98%]. S. enteritidis [10.37%] and S. derby [8.49%], were moderately recovered. S. newport, S. saint-paul [8.49% each], S. manhattan, S. London and S. muenster [1.88% each], were less prevalent, while S. east bourne, S. reading and S. infantis were sporadically isolated. Isolation of Salmonella muenster, S. reading and S. infantis is believed to be first record from chickens in Egypt

Colisepticaemia in chickens in Upper Egypt

Coliforms were isolated in a pure culture from 138 heart blood samples of 1450 dead chickens investigated, with a recovery rate of 9.52%. All isolates were classified as E.coli by their biochemical reactions and sugar fermentation. Using 55 O and OK sera, 131 strains [94.9%] could be serogrouped into 24 different O groups. 67 strains [48.6%] belong to the following O groups: 086, 02, 0128, 078 and 03 and were the most predominant groups. Strains belonged to O groups 055, 01, 026, 0126, 0114, 0127, 0119 and 0157 were detected in a moderate incidence of 31.2% [43 strains]. Out of the 131 serogrouped strains, 124 [94.7%] were capsulated. The capsular antigens: K1 [L], K71 [B16], K62 [L], K76 [B20] and K80 [B] were the most frequent types and constituted 58.9% of identified capsular antigens. Only 7 strains [5.3%] were bearing no capsular antigen [K-]