SEROPREVALENCE OF SALMONELLA IN BREEDER FLOCKS IN DIFFERENT PARTS OF INDIA

摘要

Fowl typhoid is a contagious and septicaemic disease of poultry. It affects breeder and broiler chickens and is highly prevalent in most of the countries. India has a significant role in poultry industry and fowl typhoid affects majorly egg productionand chicken quality. Several states of India were considered for the seroprevalence study after collection of blood samples from commercial breeder flocks. Rapid serum agglutination test (RST) was performed to detect presence of antibodies. Overall seroprevalence of 14.69 % was found in all 490 samples. Highest seroprevalence was found in Karnataka state with 21.73%, while it was observed lowest in Haryana state (8.86%). Birds ageing more than 45 weeks were found most seropositive for antibodies against Salmonella (21.51 %). It was also observed that fowl typhoid spreads and infects the birds highest in monsoon season (20.83%), whereas it was found least in winter (7.42%). Appropriate biosecurity measures, cleaning and disinfection processes can prevent the occurrence, and improve egg quality and production. The study can be extended with data of other states and with isolation and identification of bacteria.