Probiotic effect of Bacillus spp. isolated from African nightcrawler (Eudrilus eugeniae) on the performance of Nile Tilapia (Oreochromis niloticus L.).

This study evaluated the effects of the probiotic Bacillus spp. isolated from African nightcrawler (Eudrilus eugeniae) on the growth and survival performances of Nile tilapia (Oreochromis niloticus). A total of 400 Nile tilapia fingerlings (1.

analysis of A- and B-like toxin genes of spp., present in Asia and Costa Rica.

Objective: Acute hepatopancreatic necrosis disease is an emerging infectious disease of species. The causative agent is species, which dispels binary toxin similar to A and B, which causes mortality in infected shrimp. The aim of this research was to investigate the evolutionary relationship of A and B homologous genes present in this Asia and Costa Rica .

Selection and screening of bacteria from African nightcrawler, Eudrilus eugeniae (Kinberg, 1867) as potential probiotics in aquaculture.

Earthworms are used as an alternative protein source in aquaculture. These organisms serve as an ideal and favorable site for bacterial growth and activity. Hence, in our present study, we isolated and screened potential probiotic bacteria from African nightcrawler (Eudrilus eugeniae).