The effects of enriched Artemia with unsaturated fatty acid and vit.C feeding of Gold fish Larvae for determination of Anti stress factors

The use of live food is important in larviculture. In aquaculture enriched Artemianauplii with essential nutrients highly unsaturated fatty acids and Vitamin C has been used in order to increase growth, survivalrate, and resistance to various environmental stresses as well as infectious diseases. The objective of this study was to investigate the effects of enriched Artemia with unsaturated fatty acid and vit.c on feeding of Gold Fish Larvae for determination of Anti stress factors in a three-weed period for this purpose,4 feeding treatments were applied to Gold Fish larvia as follows:1)artificial food, 2)newly hatched Artemia , 3)enriched Artemia and 4)50% enriched Artemia and 50% artificial food.Results showed that the growth rates of larvae is various treatments were significantly different (p<0.01) particularly feeding lervea with non-enriched Artemia resulted in lower growth rate.Incontrast,the group fed with a mixture of concentrated food and enriched Artemia nauplii with ascorbilpalmitate and n-3 HUFA showed a better growth rate compared to other treatment groups.survival rate (p<0.05),tolerance of high temperature (p<0.01),resistance to hypoxic stress (p<0.01),were all significantly higher in the group fed with enriched Artemia nauplii with ascorbilpalmitate and n-3 HUFA.