Alteration in hematological and serum biochemical parameters of rainbow trout, Oncorhynchus mykiss, during citrobacteriosis outbreak

The aquaculture sector is crucial for global food security, yet it faces considerable problems from infectious diseases. Oncorhynchus mykiss, being one of the most vital cultured freshwater fish species in India, faces a significant challenge from an emerging bacterial disease called citrobacteriosis. The disease poses a significant threat to rainbow trout aquaculture since it can cause major financial losses through mortalities, slowed development rates, and enhanced sensitivity to other diseases. It affects the economics and sustainability of rainbow trout farming as well as the approaches to disease management. The present study investigates the hematological and serum biochemical alterations in rainbow trout, Oncorhynchus mykiss, during a natural outbreak of citrobacteriosis caused by Citrobacter gillenii and Citrobacter freundii. The results indicate significant (P