The survey of feeding of silver carp (Hypophathalmichthys molitrix) at rearing stage in the favorites pond in the Mazandaran province
2015
Ramzani, Hamid | Hafezieh, M. | Fazli, H. | Farabi, S.M.V. | Tahami, F. | Golaghaei, M. | Ganjian, A.
This study was to assess the silver carp diet compositionduring grow out period. The experiment was conducted in a well-managed fish farm located at Mazndarn province from 2012 to 2013. Totally five samples from the pond water and also silver cap intestines were collected in May, April, Jun, July, August and September of 2012. The results showed that there are five phyla of phytoplankton in the ponds including: Phyrophyta, Bacilluryophyta, Cyanophyta, Clorophyta, Oglenophyta. A comparison of phytoplankton populationindicated a significant differences throughout the five sampling sessions (P<0.05). Phytoplankton population increased gradually from April to September. The biomass of the phytoplankton was not also similar during the experiment (P<0.05) and this value elevated along with increasing the phytoplankton number from April to September. The overall intestine content demonstrated that around 39.2% of the proximal intestine content composed ofChlorophyta . However Chlorophyta concentration reached to 34.9% for distal part of the intestine. The rest of silver carp intestinal phytoplankton were Bacilluriaphyta ,Cianophyta, Oglana and Phyrophyta, respectively.
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