Effect of freshwater rotifer Brachionus Calyciflorus Enriched using vitamin C on larval culture Acipenser persicus

In the recent century due to over fishing destroyed habitat sturgeon declined their stocks. Acipenser persicus mostly indigenous Iranian coast is in comparison with other species and the effect is more important in our fishing. Hence in this study growth, survival of fish larvae Iranian enrichment in freshwater Rotifer three different dietary treatments and three replications of each treatment in Jun 2008 in Live food research station in Anzali was evaluated. Treatment 1:a multiplication of similar centers breeding and culture, initially Decapsulate Artemia cysts and Daphny. Treatment 2: A mixture of Artemia, Rotifer and daphny. Treatment 3: Rotifer enriched with vitamin C (Ascorbic acid 6 palmitate). In each treatment 45 larvae numbers in the 100-liter tub that measures up to 30 liters of water were repeated at 3 week for 8 days as 30 percent based 22/5 ± 0 / 5 in cintegrade, pH of water 8/5±0/1and Oxygen 9/58 ± 0/2 mg per litr was brought on. In examining specific growth rate (SGR), weight gaine (WG) food consentration rate (FCR) condition factor (cf) as the most significant treatment 3 Respectively, with 10 / 47 ±0/04, 124 / 24± 0 / 62, 1 / 51 ± 0 / 008, 0 /079 ± 0 /07 showed. Also showed that the survival ratio between the first and second treatment, three treatment significant is difference. The results showed Brachionus calyciflorus suitable for live food enrichment with vitamins C and pools can be created for this purpose out in duplicate, sometimes along with other freshwater Rotifer enrichment and use in culture.