The effect of three different diets on growth and survival of Persian sturgeon (Acipenser persicus) larvae
2011
Pajand, Z., International Sturgeon Research Institute, Rasht (Iran Islamic Republic) | Haddadi Moghaddam, K., International Sturgeon Research Institute, Rasht (Iran Islamic Republic) | Parandavar, H., International Sturgeon Research Institute, Rasht (Iran Islamic Republic) | Chubian, F., International Sturgeon Research Institute, Rasht (Iran Islamic Republic) | Rufchaei, R., International Sturgeon Research Institute, Rasht (Iran Islamic Republic)
A feeding experiment was conducted to evaluate growth and survival of Persian sturgeon larvae fed with live food (Nereis diversicolor and Daphnia spp.) and artificial diet. Diets were included: Diet 1: Dafnia (Dafnia magna), Diet 2: Nereis diversicolor worm; Diet 3: Mix of Daphnia (Daphnia spp.) (50%) and Nereis diversicolor (50%), Diet 4: Mix of Nereis diversicolor (50%) and concentrate food (50%) and Nereis diversicolor (50%); Diet 5: Mix of Daphnia spp. (33.33%) and Nereis diversicolor (33.33%) and concentrate food (33.33%). Persian sturgeon larvae were distinctly transferred to 15 tanks and fed for 15 days. For each treatment, 60 larvae were stocked into tanks. The total length and body weight of the fish were determined once before initiation of the experiment and at the end of the experimental period to assess their growth performance. Water quality parameters were recorded two times a day. There was significant difference (P is less than 0.05) in survival of Persian sturgeon larvae fed diets 2 and 3 and the other diets. Significant differences (P is greater than 0.05) were not found between diets 2 and 3 and also between diets 4 and 5. The value for BWI, PBWI, GR, DGI, SGR was higher in larvae fed mix of Nereis diversicolor and Daphnia spp. (diet 3) (p is less than 0.05) and there was significant difference between all of groups. Except diet 3 there was no significant difference in the CF of fish fed the survey diets.
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