Vol. 10, Issue 12, Part E (2025)

Author(s): M Latha Mala Priyadharshini, G Kalaiselvi, S Manoharan and G Balakrishnan

Abstract: Salmonellosis is a major zoonotic bacterial disease causing huge economic losses in the poultry industry globally. This study was carried out in response to long term production losses in a private commercial quail farm in Tamil Nadu. Septicaemia due to Mannheimiasis and virulent strains of Avian Pathogenic E. coli were recorded. After differential diagnosis, the major determinant of the disease outbreak was confirmed as Salmonella arizonae serovar. In all, Salmonella was isolated from 23 cloaca swabs (31%), 11 from intestines (15%) and 9 from the liver (12 %). From 9 different intestines E. coli was isolated (10%), 2 samples from bone marrow was positive for M. haemolytica (3%). As per AST Salmonella arizonae in Japanese quails was susceptible to Ciprofloxacin and Cefotaxime. The multiple infection was confirmed by detection of virulence genes (invA) and (stx-1 and eae A) using specific primers by polymerase chain reaction for Salmonella and APEC strains respectively.

DOI: 10.22271/veterinary.2025.v10.i12e.2831