Sulfated Polysaccharides in Diets for Nile tilapia (Oreochromis niloticus) in the Initial Growth Phase
Bruno Chaves Fabrini, Weslley Fernandes Braga, Estefânia Souza Andrade, Daniela Aparecida de Jesus Paula, Renan Rosa Paulino, Adriano Carvalho Costa, Luciano Vilela Paiva, Fabrício Lelis da Silva and Luis David Solis Murgas*
Fish Physiology Research Center, Federal University of Lavras, Lavras-MG, Brazil
- *Corresponding Author:
- Luis David Solis Murgas
Fish Physiology Research Director
Professor at Federal University of Lavras
Tel: +55 35 3829-1122
E-mail: [email protected]
Received Date: December 14, 2016 Accepted Date: May 02, 2017 Published Date: May 04, 2017
Citation: Fabrini BC, Braga WF, Andrade ES, Paula DAD, Paulino RR, et al. (2017) Sulfated Polysaccharides in Diets for Nile tilapia (Oreochromis niloticus) in the Initial Growth Phase. J Aquac Res Development 8: 477. doi: 10.4172/2155- 9546.1000477
Copyright: ©2017 Fabrini BC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This study had the objective of evaluating the performance of Nile tilapia, in initial growth phase, with the supplementation of fucoidan, extracted from brown algae, at 30 days of rearing. The experiment was conducted for a period of 30 days. We used 216 Nile tilapia fingerlings distributed in to twelve 60 liter tanks, in a completely randomized design, totalizing four treatments and tree replicates. The fingerlings were supplemented with powdered sulfated polysaccharide extract at the levels of 0%, 0.5%, 1.0% and 1.5%. During the experimental period, two samplings were performed (initial and final) to measure zootechnical performance, muscle histology and blood plasma chromatography. The data were submitted to analysis of variance at a level of significance of 5%. The performance variables muscle fiber diameter frequency and fucose plasmatic concentration were not significant among the treatments (P>0.05). It was possible to identify fucose in the blood plasma of the animals, proving its efficiency in breaking the α-(1-3) bonds of the polysaccharide, thus absorbing this component. The histological analysis showed that there was a higher percentage of hypertrophic growth of the muscle fibers, given that, in all treatments, the diameter class >50 μm prevailed (P<0.05). In conclusion, the sulfated polysaccharide fucoidan, used in diets for Oreochromis niloticus with 30 days of rearing, was not effective in increasing performance parameters and muscle growth.