1
International Sturgeon Research Institute. Aquaculture Department.
2
International Sturgeon Research Institute. Chaboksar Station
3
International sturgeon Research Institute. Aquaculture Department.
Abstract
The effect of seven feeding regimes (FR) of Persian sturgeon (Acipenser persicus) larvae from the initial weight of 0.076 g for 30 days was investigated in twenty-one 50-L plastic tanks (20-L water volume) at initial densety of five L-1. The flow of fresh water in each tank was 0.5 L/min. Feeding regimes used included: 1- Artemia nauplii+ chironomid larvae + formulated diet (from the 1st day of rearing), 2- Artemia nauplii + chironomid larvae + formulated diet (from the 9th day of rearing), 3- Artemia nauplii + Artemia biomass + formulated diet (from the 1st day of rearing), 4- Artemia nauplii + Artemia biomass + formulated diet (from the 9th day of rearing), 5- Artemia nauplii + Artemia biomass + chironomid larvae + formulated diet (from the 1st day of rearing), 6- Artemia nauplii + Artemia biomass + chironomid larvae + formulated diet (from the 9th day of rearing) and 7- feeding only with formulated diet from the beginning to the end of the period. The larvae were fed 12 times a day. The highest and lowest survival percentages were measured in FR 2 and 7, respectively. FR4 had the highest weight gain without statistically significant difference with FR 2 and 5. Dietary changes changed the composition of fatty acids in the carcasses of Persian sturgeon larvae. The highest ratio of unsaturated to saturated fatty acids was recorded in FR 1 and 2 and the lowest ratio was recorded in FR 3. The highest ratio of omega-3 to omega-6 fatty acids was recorded in FR 1 and 2, and the lowest ratio of omega-3 to omega-6 fatty acids was recorded in FR7. The highest ratio of essential to non-essential amino acids in larvae carcasses was measured in FR1, 2, the lowest in FR 6, and 3. Chironomid larvae had a significant effect on the survival of larvae, especially in FR2. Totally, the presence of chironomid larvae in FR1 and 2 increased survivals, carcass unsaturated fatty acids, the ratio of omega-3 to omega-6 fatty acids and the ratio of essential to non-essential amino acids. Nevertheless, it can be stated that, feeding the larvae of Persian sturgeon from Artemia biomass can also cause survival and an acceptable growth rate.
Ghorbani Vaghei, R. , Pajand, Z. , Mohseni, M. , Sohrabi, T. and Sayyad Hasani, M. H. (2025). The effect of feeding regimes on growth, survival, fatty acids and amino acids composition of Persian sturgeon (Acipenser persicus) larvae carcasses. Sturgeon Extention Journal, 7(Fall & Winter), 20-29.
MLA
Ghorbani Vaghei, R. , , Pajand, Z. , , Mohseni, M. , , Sohrabi, T. , and Sayyad Hasani, M. H. . "The effect of feeding regimes on growth, survival, fatty acids and amino acids composition of Persian sturgeon (Acipenser persicus) larvae carcasses", Sturgeon Extention Journal, 7, Fall & Winter, 2025, 20-29.
HARVARD
Ghorbani Vaghei, R., Pajand, Z., Mohseni, M., Sohrabi, T., Sayyad Hasani, M. H. (2025). 'The effect of feeding regimes on growth, survival, fatty acids and amino acids composition of Persian sturgeon (Acipenser persicus) larvae carcasses', Sturgeon Extention Journal, 7(Fall & Winter), pp. 20-29.
CHICAGO
R. Ghorbani Vaghei , Z. Pajand , M. Mohseni , T. Sohrabi and M. H. Sayyad Hasani, "The effect of feeding regimes on growth, survival, fatty acids and amino acids composition of Persian sturgeon (Acipenser persicus) larvae carcasses," Sturgeon Extention Journal, 7 Fall & Winter (2025): 20-29,
VANCOUVER
Ghorbani Vaghei, R., Pajand, Z., Mohseni, M., Sohrabi, T., Sayyad Hasani, M. H. The effect of feeding regimes on growth, survival, fatty acids and amino acids composition of Persian sturgeon (Acipenser persicus) larvae carcasses. Sturgeon Extention Journal, 2025; 7(Fall & Winter): 20-29.
