National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An experiment was conducted to study the influence of dietary fucoidan from brown seaweeds viz., Padina tetrastromatica and Sargassum oligocystum on the innate immunity and disease resistance of fish Oreochromis mossambicus. Fucoidan was supplemented with fish feed at different concentrations such as 0.1, 0.2 and 0.3% to observe hematological changes and non-specific immunological properties for a period of 60 days. The results indicated that fucoidan supplemented diet had no significant effect on hematological changes whereas, the lysozyme activity was significantly increased in the fishes fed with fucoidan of P. tetrastromatica (4012 ± 2198 IU ml-1) on 30th day and S. oligocystum (2412 ± 221 IU ml-1) on 15th day at 0.2% and 0.3% concentration, respectively. NBT activity was found to be highest at 15th, 30th and 45th days in fishes fed with 0.1, 0.2 and 0.3% of fucoidan derived from P. tetrastromatica. The results stated that the fucoidan derived from S. oligocystum has relatively lower lysozyme and NBT activity than from P. tetrastromatica but higher than the control. The fish O.mossambicus challenged with A. hydrophila, feeding offucoidan extracted from the seaweeds invariably increased the survival upto 75%, 80% at 0.2 and 0.3% and 65, 70% respectively than the control.
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