Dietary biological additives effect on feed utilization in Nile tilapia

摘要

The research of probiotics for aquatic animals is increasing with the demand for environment friendly aquaculture.Probiotics were defined as live microbial feed supplements that bio-control and antagonist pathogens. The most promising prospects are sketched out, but considerable efforts of research will be necessary to develop the applications to aquaculture (Castillo, 2008).Since, natural agriculture or organic farming is a return to working with, but not against, nature (Abdelhamid, 2002), therefore, the microbiota management tools of probiotics, prebiotics and synbiotics have been developed and, indeed, commercialised over the few decades with the expressed purpose of increasing number of bifidobacteria and/ or lactobacilli within the gastrointestinal tract (Tuohy et al., 2003).