Efficacy of Bacillus cereus strain BP‐MBRG/1b and prebiotic fructooligosaccharides dietary supplementation on growth performance and disease resistance of Macrobrachium rosenbergii (De Mann) towards Aeromonas hydrophila AH‐1N

Abstract

The effects of Bacillus cereus strain BP‐MBRG/1b (probiotic), 0.4% fructooligosaccharides (prebiotic) and its combination synbiotic dietary supplementations were evaluated in M. rosenbergii juveniles through feeding trials. After 28 days of feeding, the results showed that the probiotic fed juveniles had the highest specific growth rate (SGR) (1.00 ± 0.02%/day) compared with the prebiotic (0.42 ± 0.08%/day) and synbiotic (0.54 ± 0.08%/day) treatments. The prawns were then challenged with pathogenic Aeromonas hydrophila strain AH‐1N via static immersion. No significant differences were observed in terms of mortalities for the first challenge nor in the second challenge for all the treatments. Histological observations of the prawn hepatopancreas in all the treatment groups demonstrated necrosis and sloughing of the cells. Overall, the present result suggested that B. cereus strain BP‐MBRG/1b demonstrated enhancement of growth performance in M. rosenbergii compared with prebiotic and synbiotic treatments. However, further investigation is required to study the optimal dosage of the synbiotic treatment (probiotic B. cereus strain BP‐MBRG/1b and prebiotic fructooligosaccharides) against A. hydrophila challenged M. rosenbergii.

Effects of dietary Bacillus amyloliquefaciens on the growth, immune responses, intestinal microbiota composition and disease resistance of yellow catfish, Pelteobagrus fulvidraco

“…The effects of dietary supplementation of Bacillus subtilis HAINUP40 on growth, immunity and disease resistance of tilapia (Oreochromis niloticus) were investigated (Liu et al, 2017). In another study, Muthukrishnan et al (2016)found that Bacillus cereus BP-MBRG/ 1b significantly improved growth performance, intestinal propionic acid production and haemolymph SOD activity in prawns (Muthukrishnan et al, 2021). In the present study, dietary supplementation of B. amyloliquefaciens improved growth performance, immune responses, the structure of the intestinal microbiota and resistance to pathogens in yellow catfish.…”

Utilisation of probiotics for disease management in giant freshwater prawn (Macrobrachium rosenbergii): Administration methods, antagonistic effects and immune response

“…and Pseudomonas spp. are causes of black spots, brown spot, shell diseases, bacterial necrosis, luminescent larval syndrome, white post‐larval disease and rickettsia (Ali et al, 2018; Muthukrishnan et al, 2021; Pillai & Bonami, 2012; Sasmita Julyantoro, 2015). Additionally, Vibrio spp.…”