Effects of Sargassum ilicifolium (Sargassaceae, Phaeophyceae) Meal on Physico- Chemical Formulated Shrimp (Litopenaeus vannamei) Feed

نویسندگان

1 Iranian Fisheries Sciences research organization, AREEO, Iran

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چکیده

Almost 309 species and infraspecifictaxa of macroalgae including 78 Chlorophyta(within 15 families), 70 Ochrophyta(Phaeophyceae; within 7 families) are and161 Rhodophyta (within 30 families) listedin coastal line of the Persian Gulf and iranianwater of Oman Sea. Among them, Sargassumilicifolium, a dominant brown seaweed,which was used as a part of aquaticanimal feed in order to investigate its effecton physico chemical formulated feed. Twoisocaloric diets (336 kcal metabolizable energy/100g diet) containing 33% crude protein,with and without inclusion of brownseaweed S. ilicifilium (0 and 15, replacedon protein resources of shrimp diet) wereused. Seaweed supplement in formulatedfeed not only improved the humidity absorbance(110.20%±5.00%) and stability ofpellet feed in seawater (98.11±3.23%) comparedto the control but also acted as the bestbinder and increased the periods of leachingpellet (5.20±0.50) when they were droppedin seawater. It can be replaced instead ofvitamin and mineral premixes when thefeed is enriched by vitamin pyridoxine (6.4mg.100-1 seaweed DW) and minerals cobalt(0.06 mg.100-1 seaweed DW) and zinc (1.1mg.100-1 seaweed DW).