The Investigation of Body Composition and Fatty Acids in Muscle of Grass Carp (Ctenopharyngodon idella) Fed with Lemna Sp., Azolla filiculoides and Alfalfa and Pellet

Document Type : Nutrition

Authors

Department of Fisheries, Faculty of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

Abstract

This  study  was  performed  to  determine  body  composition  and  fatty  acids  in  muscle  of Grass  carp  (Ctenopharyngodon  idella)  with  average  weight  15.41±  0.51g,  fed  with  different plant  diet  (Lemna Sp., Azolla  filiculoides and Alfalfa)  and  Pellet  (with  25 and  35  percent protein)  for  90  days  was  conducted  at  the  aquatic  research  center  of  Shahid  Fazli  Barabadi Fisheries Faculty in Gorgan University of Agricultural Sciences and Natural Resources. There is  no  significant  difference  except  lipid  value  in  the  content  of  protein,  moisture  and  ash samples of in these treatments (P>0.05). In all treatments in both fish, palmitic acid C16:0 and oleic  C18:1  n-9  acid  were  the  principal  saturated  and  monounsaturated  fatty  acids.  In  this comparison  Muscle  fatty  acid  composition  between  treatments  showed  that  there  are significant difference in among all the fatty acids except for C16:0, C C18:1 (n-7), C22:0 and ∑SFA (P<0.05). the highest of  n-3 and n-6 was obtained in Alfalfa treatment (23.61±1.7) and pellet  treatment  with  35%  protein  (13.22±0.3)  respectively  and  the  lowest  was  observed  in pellet  treatment  with  25%  protein  (6.85±1.7)  and Azolla  filiculoides treatment  (10.78±0.7) respectively and had significantly different to each other (P<0.05).

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