Evaluations of Bacillus spp. as dietary additives on growth performance, innate immunity and disease resistance of olive flounder (Paralichthys olivaceus) against Streptococcus iniae and as water additives

Effects of dietary Bacillus cereus G19, B. cereus BC-01, and Paracoccus marcusii DB11 supplementation on the growth, immune response, and expression of immune-related genes in coelomocytes and intestine of the sea cucumber (Apostichopus japonicus Selenka)

“…The potential probiotic P. marcusii DB11, screened from the intestine of sea cucumber, has demonstrated to improve the growth performance and immune responses of sea cucumbers [21]. In this study, B. cereus G19 and B. cereus BC-01 supplementation showed to significantly enhance the growth performance of sea cucumbers compared to the control, similarly as reported in yellow croaker (Larimichthys crocea) [16], olive flounder (Paralichthys olivaceus) [36], and shrimp (Litopenaeus vannamei) [18]. The growth rate of sea cucumbers was also significantly increased when the basic diet was supplemented with P. marcusii DB11, results that were in agreement with those reported by Yan et al [21].…”

Effects of dietary Bacillus licheniformis on growth performance, immunological parameters, intestinal morphology and resistance of juvenile Nile tilapia (Oreochromis niloticus) to challenge infections

“…The immune parameters such as lysozyme activity and complement C3 were stimulated and streptococcus iniae infected tilapia fed with B.licheniformis greater than or equal to 4.4×10 6 CFU/g showed increased protection against the infection and higher survival rate (P<0.05) (Fig 1). It was reported that Bacillus bacteria are able to outcompete other bacteria for nutrients and space and can exclude other bacteria through the production of antibiotics, as usually lead to the enhanced immunity of fish [56]. In the previous studies, improved disease resistance against S.iniae by dietary administration of Bacillus spp.…”

Screening and identification of organics-degrading bacteria from the sediment of sea cucumber Apostichopus japonicus ponds

“…For example, for screening probiotics to inhibit pathogenic bacteria, the selection criteria include strain's bacteriostatic activity, tolerance to bile salts and low pH as well as protease, and adhesion to the intestinal tract (Lauzon et al 2008;Kesarcodi-Watson et al 2009;Fjellheim et al 2010;Hai et al 2007;Gomez-Gil et al 2000). For screening probiotics to rehabilitate environments, the degradation rates for NH 4 -N, NO 2 -N, and COD, pathogenicity for the culture species, and the effects on feeds use are used as index (Li et al 2001;Yan et al 2012;Cha et al 2013). In this study, some bacterial strains isolated from the sediment and biofilter were chosen for the purpose of quickly removing organics from the sediment in A. japonicus ponds.…”