p. 1−10
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p. 11−21
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0.05), significant difference between biomass and depth (p<0.05) and no significant difference between biomass at transect and seasons (p>0.05) were found. Also, according to multivariate analysis of benthic invertebrate on the abundance at various depths revealed that depths of 5, 10 and 20 meters from the importance of certain fisheries in terms of frequency, abundance and biomass of the macrobenthic invertebrate, slope substrate, substrate, close to the beach, the accumulation of nutrients, Nursery ground, feeding ground and Spawning ground is important for different important species in the Caspian Sea. Therefore, the establishment of fish cage culture was recommended more than 20-meter depths according to the plans of fish cage culture in the southern coast of the Caspian Sea of the Iranian Fisheries Organization.]]>
p. 23−39
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p. 41−50
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p. 51−63
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p. 65−74
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0.05). Moreover, the factors showed no significant difference between the control and experimental treatments during the dwell time (p>0.05). The natural β-carotene had a good quality during the storage period at 5 °C for one year. Since there was no significant difference between the β-carotene derived from Azolla filiculoides and the synthetic one in terms of the chemical tests, purity, and dwell time, and since the natural β-carotene derived from Azolla filiculoides takes precedence over the synthetic one in terms of the economic value, it is recommended that natural β-carotene extracted from Azolla filiculoides be substituted for synthetic β-carotene in the food industry.]]>
p. 75−86
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p. 87−96
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0.05). The lowest Feed Conversion Ratio was observed in treatment 3% feeding per day, and treatments with 3, 4 % feeding per day had the highest Survival Rate with 77.55± 2.6 and 64.37 ± 1.7 % respectively. Results indicate utility of feeding 3 percent during a day (treatment 3) that has a significant difference in the increase of survival rates, reduced feed conversion ratio and increased carcass protein and lipid, with other treatments (p<0.05).]]>
p. 97−111
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p. 113−127
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0.05). In addition, essential amino acids (ΣEAA) and non-essential amino acids (ΣNEAA) and ratio ΣEAA / ΣNEAA, were affected by lysine and methionine amino acid supplementation as ΣEAA and ratio (ΣEAA) / (ΣNEAA) significantly increased with increasing levels of amino acid supplementation and the highest amount of this parameters observed in groups were fed by diet with high levels of methionine.The results showed that adding 75% dietary methionine supplementation and 25% lysine supplemtation to the diet containg 45/95% protein, have positive effects on biochemical composition and amino acid profile in rearing of Sobaity seabream juveniles.]]>
p. 129−141
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p. 143−157
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p. 159−163
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p. 165−170
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p. 171−179
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p. 181−186
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