Growth and intestinal morphology of juvenile pacu Piaractus mesopotamicus (Holmberg 1887) fed dietary prebiotics (mannanoligosaccharides - MOS)

• Published in: Anais da Academia Brasileira de Ciências 2014-09, Vol.86 (3), p.1517-1524
• Main Authors: Sado, Ricardo Y, Bicudo, Alvaro J A, Cyrino, José E P
• Format: Article
• Language: English
• Subjects: Animal Feed; Animals; Aquaculture - methods; Characidae - classification; Characidae - growth & development; Dietary Supplements; histologia; Intestinal Mucosa - anatomy & histology; Intestinal Mucosa - drug effects; Mannans - administration & dosage; MULTIDISCIPLINARY SCIENCES; nutrição de peixes; Piaractus mesopotamicus; Prebiotics; prebióticos; Weight Gain
• ISSN: 0001-3765; 1678-2690; 1678-2690
• DOI: 10.1590/0001-3765201420130088

Intensification of aquaculture production systems exposes fish to numerous stressors, which may negatively affect their growth and limit profitability of aquaculture systems. This study determined effects of increasing levels of dietary mannanoligosaccharides on growth and intestine morphology of pacu. Fish (44.04 g) were randomly distributed into 32 tanks (500 L; 10 fishes per tank) and fed during 63 days with a commercial diet supplemented with 0.0; 0.2; 0.4; 0.6; 0.8; 1.0; 1.5 and 2.0% dietary mannanoligosaccharides. Growth parameters did not differ (P>0.05) between fish fed control diet and mannanoligosaccharide supplemented diets. Intestinal villi perimeter was performed in fish fed control diet, 0.4 and 1.5% dietary mannanoligosaccharides and also showed no differences (P>0.05) between treatments. Dietary supplementation of mannanoligosaccharides unclear did not have effects on pacu. Studies on the characterization of intestinal microbiota together with experiment that reproduce commercial fish production systems rearing conditions are necessary to determine the effective use of this dietary supplement for the species.