Controlled challenge experiment demonstrates substantial additive genetic variation in resistance of Nile tilapia (Oreochromis niloticus) to Streptococcus iniae

This research suggests promise for genetic improvement of tilapia for resistance to Streptococcus iniae through selective breeding, thereby providing commercial fish farmers with a more resistant stock of tilapia as an additional management tool for reducing production losses due to Streptococcus spp.