4.2 Article

SINGULAR EFFECTS OF BACILLUS SUBTILIS C-3102 OR SACCHAROMYCES CEREVISIAE TYPE 1 ON THE GROWTH, GUT MORPHOLOGY, IMMUNITY, AND STRESS RESISTANCE OF RED SEA BREAM (PAGRUS MAJOR)

Journal

ANNALS OF ANIMAL SCIENCE
Volume 21, Issue 2, Pages 589-608

Publisher

WALTER DE GRUYTER GMBH
DOI: 10.2478/aoas-2020-0075

Keywords

Bacillus subtilis; Saccharomyces cerevisiae; growth performance; immunity; red sea bream

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The study demonstrated that supplementing red sea bream feeds with Bacillus subtilis and Saccharomyces cerevisiae can significantly enhance growth performance, digestion capacity, gut morphology, immune response, and stress resistance in the fish.
The beneficial effects of Bacillus subtilis C-3102 and Saccharomyces cerevisiae type I were tested in red sea bream (Pagrus major) feeds. A basal diet (control) and two other diets were prepared by supplementation with B. suhfilis C-3102 (PK) or S. cerevisiae type 1 (PY). After 60 days, both probiotic-supplemented groups exhibited significant enhancement in growth performance, the protein efficiency ratio (PER), and digestive enzyme secretion (protease and amylase) compared to the control group (P<0.05). The anterior, middle, and posterior parts of the intestines exhibited significantly increased values of intestinal fold height (hi), enterocyte height (hE), and microsillus height (MIN) in fish fed PB- or PY-supplemented diets (P<0.05). Serum peroxidase, anti-protease, and bactericidal activities were enhanced significantly in both problotic-treated groups compared to the control group (P<0.05). Serum and mucus lysozyme activities improved significantly in the PB group compared to the control group (P<0.05). Catalase activity was also significantly decreased in both probiotic groups, with relatively lower activity observed in the PY group (P<0.05). Both probiotic groups showed considerably Increased tolerance to freshwater exposure (P<0.05). In conclusion, B. subtilis C-3102 and S. cerevisiae type I can be used as functional probiotics to enhance the growth performance, digestion capacity, gut morphology, immune response, and stress resistance of the red sea bream with relatively higher efficiency by B. subtilis C-3102.

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