Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Effects of Probiotic Bacillus on Growth Performance, Immune Response and Disease Resistance in Aquaculture

Version 1 : Received: 1 March 2021 / Approved: 2 March 2021 / Online: 2 March 2021 (11:06:52 CET)

How to cite: Rahman, A.; Shefat, S.H.T.; Chowdhury, M.A. Effects of Probiotic Bacillus on Growth Performance, Immune Response and Disease Resistance in Aquaculture. Preprints 2021, 2021030075 (doi: 10.20944/preprints202103.0075.v1). Rahman, A.; Shefat, S.H.T.; Chowdhury, M.A. Effects of Probiotic Bacillus on Growth Performance, Immune Response and Disease Resistance in Aquaculture. Preprints 2021, 2021030075 (doi: 10.20944/preprints202103.0075.v1).

Abstract

Aquaculture is one of the fastest-growing animal food-producing agricultural industries in the world and proper performance of fish in morphological, physiological and immunological aspects is important for fish production and sustainable expansion of aquaculture. But several inhibitors like disease, pathogen, and adverse environment can overpower these performances. At present, antibiotics in preventing these inhibitors have been seen as becoming favorable to those inhibitors. So, Bacillus, an important group of probiotic bacteria can be an alternative to these antibiotics in aquaculture. Bacillus has been seen used in different experiments, mainly as a supplement in feed at various concentrations. Bacillus showed effective results like improved growth with minimum cost, improvement in reproduction, hematology, improved immune response and disease, and stress resistance as well as better proximate composition in different fish species. Application of Bacillus strains has proven efficient in improving water quality by reducing ammonia and nitrite toxicity, harmful algal blooms and utilization of H+ ion. Larger application of probiotic Bacillus instead of the hazardous synthetic chemicals would promote eco-friendly low-input sustainable aquaculture for food and nutritional security of the increasing world population. So many more experiments should be conducted in commercially important fishes for better growth and health of fishes which will certainly increase fish

Keywords

Probiotics; Bacillus subtilis; growth performance; immune-hematological parameters; stress resistance

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