Use of live and dead probiotic cells in tilapia Oreochromis niloticus

Abstract

To investigate the effect of live and dead probiotic cells on the non-specific immune system of tilapia Oreochromis niloticus, probiotics were introduced by feeding either in the form of live or dead cells, or supplying live cells to the rearing water in a closed recirculating system. The probiotics treatment enhanced non-specific immune parameters such as lysozyme activity, migration of neutrophils and plasma bactericidal activity, resulting in improvement of resistance to Edwardsiella tarda infection. Especially, oral administration of live cells seemed to be more effective compared with other probiotic treatments such as oral administration of dead probiotic cells and supply of live probiotic cells to the rearing water. These results indicate that probiotics treatment is promising as an alternative method to antibiotics for disease prevention in aquaculture, and the viability of probiotic bacteria is a key factor to induce more potential effect of probiotics used for fish production.

Evaluation on the effect of local and imported yeast as supplementary feed on African catfish (<i>Clarias gariepinus</i> Burchell, 1822) in Egypt

“…This result agrees with (Taoka et al, 2006b) who investigated the effect of live and dead probiotic cells on the non-specific immune system of Nile tilapia. Fish hematology is gaining great attention in fish culture because of its importance in monitoring the health status of fish (Hrubec et al, 2000).…”

Freshwater bivalves rearing: a brief overview

“…Efficient methods are currently used in marine bivalve larval rearing as: water disinfection, antibiotics, immunostimulants and probiotics, often as a combination of these (Fitt et al 1992;Kesarcodi-Watson et al 2008;Prado et al 2010). Between these methods, probiotics is a consolidate technique already used in fish larval nutrition (Taoka et al 2006;Fjellheim et al 2010). Following the experience in fish larval rearing, probiotics have been successively utilized in marine bivalve larval rearing (KesarcodiWatson et al 2010;Prado et al 2010;Zhou et al 2009).…”

The effects of different concentrations of probiotic Saccharomyces cerevisia on growth performance and survival rate of rainbow trout (Oncorhynchus mykiss), fry and resistance against salinity

“…The range of probiotics examined for use in aquaculture has encompassed many microorganisms such as bacteria, bacteriophages, yeasts and unicellular algae (Irianto and Austin, 2002). In several studies, the effects of probiotics on survival and growth rate of fish larvae and crustacea such as digestibility coefficients of nutrients, decreasing food conversion ratio and increase tolerance to stress have been studied (Rengpipat et al, 1998;Ali, 2000;Heizhao et al, 2004;Himabindu et al, 2004;Taoka et al, 2006a). It has been shown that the use of probiotics can increase the amount of given food necessary for animal optimal growth, by which the expense of fish farming might be reduced (Lara-Flores et al, 2003).…”