The Study Of Indian White Shrimp Larvae Feeding (Fenneropenaeus Indicus) By Enriched Rotifer With Unisaturated Fatty Acids (DHA, EPA) And Vitamin C
2007
Yahyavi, M., PhD. of Fishery, Bandar abbas nuit Islamic Azad university, | Azari Takami, GH, Professor of Aquatic Health and Diseases, Faculty of Veterinary Medicine, University of Tehran.
The effects of enriched rotifers with highly unsaturated fatty acids and vitamin C on the growth factors and survivals of fenneropenaeus indicus has been evaluated during larval feed stage. Larvae were fed newly hatched Artemia nauplii (Control); rotifers cultured on Chlorella sp. algae (treatment 1); rotifers enriched with emulsion cod liver oil (treatment 2), and enriched rotifers with emulsion cod liver oil and ascorbyl palmitate (treatment 3). Most concentrations which at a level of (0.05) with treatments 1 (0.4) and control have shown a significant difference. Teh ratio of DHA/EPA among dietary treatments had a significant difference and the most difference occurred in treatment 2 (0.65) and 3 (0.72) and and the least ratio has been recorded for treatment 1 (0/05) and control (0/01). The level of EPA and the ratio of n-3/n-6 among the treatments shows exactly the reciprocal with the values mentioned above so as the most values have been observed in treatments 1 and control while treatment 2 and 3 had the least values. The variation of these fatty acids in the tissues of larvae fed withy dietary treatments are in the same order of the above. Therefore on this basis most of the growth and the survival enhancement observed at postlarval 1 (Pl1) in treatments 2 and 3 have been enriched with unsaturaed faty acids and unsaturated fatty acids with vitamin C respectively. This shows a significant difference with treatment 1 and control (P0.05). Also the lowest growth and survival rates have been experienced in contol treatment. But in postlarval 5 (PL5) the most growth and survival rates with respect to treatment 1 in which their difference has also been significant (p0.05).
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