The effect of feeding with different levels of Spirulina platensis on the growth indices and carcass composition of freshwater bivalve mussel (Anodonta cygnea)

Document Type : Research Paper


1 Fisheries, Faculty of Natural Resources, Guilan University, Soemesera, Iran

2 Fisheries Department, Faculty of Natural Resources, University of Gilan, Soume-Sera.Iran

3 Academic staff



After adaptation, 72 mussels were distributed among 12 plastic tanks. mussels during 16 weeks with 4 different diets including C: control (green water produced with well water), T1: green water 70% + 30% spirulina algae, T2: feeding with green water 40% + 60% algae Spirulina and T3: feeding with 100 ml spirulina algae solution. After 8 and 16 weeks, mussels from each tank were collected to check carcass composition. Based on the results, no significant difference was observed in the growth indices (P<0.05). Examining carcass composition in week 8 showed that the values before and after feeding with different treatments had a significant difference, so that the percentage of protein at the beginning of the experiment was significantly lower than T2 and T3 treatments (P<0.05). No significant difference was observed between the amounts of fat and ash in different treatments (P<0.05). The amount of moisture in the control treatment was significantly lower than other treatments (P<0.05). After the end of the feeding period, the carcass composition values were significantly lower than those of the nutritional treatments before the start of the experiment (P<0.05).


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