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Proceedings of the International Academy of Ecology and Environmental Sciences, 2019, 9(1): 1-5
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Article

Effect of feeding Artemia urmiana cysts on performance and survival of Caspian brown trout (Salmo trutta caspius) fish at the larva stage

Reza Ebrahimi Khezer Abad1, Masoud Farrokhrooz1, Ali Nekuie Frad2
1Department of Fisheries, Faculty of Natural Resources, Lahijan Branch, Islamic Azad University, Lahijan, Iran
2National Artemia Research Center, Iranian Fisheries Sciences Research Institute, Agricultural research, Education and Extension Organization (AREEO), Urmia, Iran

Received 25 June 2018;Accepted 30 July 2018;Published 1 March 2019
IAEES

Abstract
This study was conducted to evaluate the effect of feeding different levels of Artemia urmiana cysts on performance and survival of Caspian brown trout fish. The treatments included different levels (25, 50, 75 and 100%) of A. urmiana cysts to Caspian brown trout fish with an average weight of 120¡À25 g in active phase of larva stage until the weight of one gram. Feed intake (FI), weight gain (WG), body weight (BW), feed conversion ratio (FCR), specific growth rate (SGR) of the treatments were determine and the survival percentage index was calculated based on the number of remaining larvae in the sites on the total number of larvae. The result of study showed that the higher feed intake was for 25 and the lower feed intake was for 50% of A. urmiana cysts treatments. Also the best specific growth rate and feed conversation ratio was related to the 25% of A. urmiana cysts groups (p¡Ü0.05). Additionally the best survival index was for fish that fed by 75% and the worst survival index was for fish that fed by 100% of A. urmiana cysts. In conclusion we could demonstrate that feeding A. urmiana cysts may have some beneficial effects on the performance and survival of Caspian brown trout (Salmo trutta caspius) fish at the larva stage.

Keywords Artemia urmiana;Caspian brown trout;performance;larva survival.


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