Growth, immune status and intestinal morphology of Nile tilapia fed dietary prebiotics (Mannan oligosaccharides-MOS)

Ricardo Yuji Sado, Fernanda Raulino Domanski, Patricia Franchi Freitas, Francielli Baioco Sales


DOI: https://doi.org/10.3856/vol43-issue5-fulltext-14

Abstract


Farmers must conform to Best Management Practices in fish production such as the development of non-antibiotic dietary supplements for fish growth and health management. This study determined effects of increasing levels of dietary mannan oligosaccharides on growth, immune system and intestine integrity of Nile tilapia. Fish (49.6 ± 10.8 g) were randomly distributed into 12 tanks (250 L; 20 fishes per tank) and fed during 60 days with a practical diet supplemented with 0.0, 0.2, 0.4 and 0.6 % dietary mannan oligosaccharides (n=3). Fish growth and immune system were not affected (P > 0.05) by treatments. Fish fed 0.4% prebiotic supplementation presented increased (P < 0.05) intestinal fold height. Moreover, the intestine muscular layer thickness were increased in fish fed 0.4 and 0.6 % dietary prebiotic. After 60 days, there were no significant effects on intestinal morphology. After 60 days, there were no effects on intestinal morphology. Studies regarding characterization of intestinal microbiota and experiment that reproduce commercial fish production systems hearing conditions are necessary to determine the effective use of this dietary supplement for the specie.


Sado R, Domanski F, Freitas P, Sales F. Growth, immune status and intestinal morphology of Nile tilapia fed dietary prebiotics (Mannan oligosaccharides-MOS). Lat. Am. J. Aquat. Res.. 2017;43(5). Available from: doi:10.3856/vol43-issue5-fulltext-14 [Accessed 20 Jan. 2019].
Sado, R., Domanski, F., Freitas, P., & Sales, F. (2017). Growth, immune status and intestinal morphology of Nile tilapia fed dietary prebiotics (Mannan oligosaccharides-MOS). Latin American Journal of Aquatic Research, 43(5). doi:http://dx.doi.org/10.3856/vol43-issue5-fulltext-14