Probiotic applications for rainbow trout (Oncorhynchus mykiss Walbaum) II. Effects on growth performance, feed utilization, intestinal microbiota and related health criteria postantibiotic treatment
By D. Merrifield, G. Bradley, R. Baker, S. Davies. 2010
301 citations recorded by the source corpus.
The effect of dietary probiotics (Bacillus subtilis, Bacillus licheniformis and Enterococcus faecium) was assessed on rainbow trout (Oncorhynchus mykiss Walbaum) previously treated with oxolinic acid. After feeding on supplemented diets for 10 weeks growth performance, feed utilization, gastrointestinal colonization and health status were assessed. B. subtilis + B. licheniformis fed fish displayed a significant improvement of feed conversation ration (FCR), specific growth rate (SGR) and protein efficiency ratio (PER). High levels of probiotic species were observed in the posterior gastrointestinal tract as transient digesta associated populations and potentially resident mucosal populations. Levels of Bacillus spp. reached log 3.74 CFU g⁻¹ on the mucosal epithelium and log 7.41 CFU g⁻¹ in the digesta of fish fed diets supplemented with B. subtilis and B. licheniformis. Enterococci levels reached log 2.84 CFU g⁻¹ on the mucosa and log 7.78 CFU g⁻¹ in the digesta of fish fed E. faecium supplemented diets. Feeding trout the Bacillus probionts alone or synergistically with E. faecium resulted in elevated leucocyte levels. The results of the current study demonstrate a potential role of probiotics for stabilizing/reinforcing the gastrointestinal microbiota after antibiotic treatment. This could reinvigorate the intestinal defensive barrier mechanism and provide protection against secondary potential pathogens.
Subfields: Aquatic Science, Immunology
View Paper: https://www.semanticscholar.org/paper/81d88da4286e6e37e84567e1dae186806f880f55
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In Aquatic Science
In Immunology
Citations in the corpus
- Evaluation of Bacillusamyloliquefaciens on the growth performance, intestinal morphology, hematology and body composition of Nile tilapia, Oreochromis niloticus (2014, background): “…improving immune responses, increasing digestive enzyme activities, improving feed utilization and digestibility, controlling diseases and improving water quality (Gatesoupe 2008; Kesarcodi- Watson et al. 2008; Wang et al. 2008; Apún-Molina et al. 2009; Qi et al. 2009; Merrifield et al. 2010a).”
- Effect of dietary components on the gut microbiota of aquatic animals. A never‐ending story? (2016, background): “…resident colonization of the intestinal epithelium (Gildberg & Mikkelsen 1998; Gildberg et al. 1995, 1997), intestinal mucus (Kim & Austin 2006; Merrifield et al. 2010b, 2011b; Newaj-Fyzul et al. 2007), transient digesta (Aubin et al. 2005; Bagheri et al. 2008; Balc azar et al. 2007c; Bogut et…”
- Combined effects of exogenous enzymes and probiotic on Nile tilapia (Oreochromis niloticus) growth, intestinal morphology and microbiome (2016, unknown): “…communities are sensitive to rearing environment, seasonal and diet changes including the supplementation with probiotic (Dimitroglou et al., 2011, Merrifield et al., 2010, Romero et al., 2014) and exogenous digestive enzymes (Bedford and Cowieson, 2012, Geraylou et al., 2012, Zhou et al., 2013,…”
- A review on replacing fish meal in aqua feeds using plant protein sources (2018, background): “Merrifield et al. (2010) [15] reported that rainbow trout fed high plant proteins intercropped with probiotics supplementation undoubtedly prompted the immune and strain responses.”
- Effects of dietary Bacillus subtilis C-3102 on the production, intestinal cytokine expression and autochthonous bacteria of hybrid tilapia Oreochromis niloticus ♀ × Oreochromis aureus ♂ (2013, unknown): “For example, Bacillus spp. reached log 3.74 and 7.41 CFU g−1 wet weight in the mucosal epithelium and in the digesta, respectively, of rainbow trout (Oncorhynchus mykiss) fed diets supplemented with 7.75 CFU g−1 B. subtilis (Merrifield et al., 2010).”