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|Title:||Immune enhancement assessment of dietry incorporated marine alga Sargassum wightii (Phaeophyceae/Punctariales) in tiger shrimp Penaeus monodon (Crustacia/Penaeidae) through prophenoloxidase (proPO) systems|
Robins, P. Herald
|Keywords:||Pro phenol oxidase activity;Challenge;Immunostimulant;Marine alga;Sargassum wightii|
|IPC Code:||Int. Cl. ⁷ A01K61/00|
|Abstract:||An experiment of 30 days duration was conducted to test the efficacy of the seaweed Sargassum wightii, as immunostimulant in tiger shrimp Penaeus monodon. The shrimps were fed with the experimental diets coated with different concentrations of the brown algae S. wightii viz. 10, 20 and 30 g/kg. They were challenged with a marine pathogen Vibrio parahaemolyticus to assess the increase in survival rate if any due to immune enhancement. Another group of shrimp was used for drawing the haemolymph to estimate the increase in the level of prophenoloxidase activity. Samplings for the above said analysis were carried out at regular intervals of 3 days viz. 1st, 3rd, 6th, 9th and 12th days. The highest prophenoloxidase activity (0.62) and the highest survival rate (83%) were recorded on the 12th day with the experimental diet (10 g/kg) . Hence the 10 g/kg of S. wightii added to the diet could be an eco-friendly and economically viable immunostimulant for penaeid shrimps.|
|Appears in Collections:|| IJMS Vol.33(4) [December 2004]|
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