ISSN 2736-1624
Frontiers of Agriculture and Food Technology ISSN 7295-2849 Vol. 8 (11), pp. 001-003, November, 2018. © International Scholars Journals
Short Communication
A comparison of the survival and growth performance in rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta fario) fry
Volkan Kizak1*, Yusuf Guner2, Murat Turel2, Erkan Can1 and Murathan Kayim1
1Tunceli University, Fisheries Faculty, Tunceli, Turkey.
2Ege University, Fisheries Faculty, Izmir, Turkey.
Accepted 21 May, 2018
Abstract
The rainbow trout is an intensively cultured species because of its more cultivatable character than the brown trout. In this experiment, the brown trout culture did not expand due to low growth performance compared to that of the rainbow trout. This experiment was conducted in a commercial trout farm, Aegean Area (Turkey). Growth performances and survivals of rainbow and brown trouts from fry to fingerling were observed for 155 days. Growth performances, feed conversion rates and survivals were determined. The initial weights of the rainbow and brown trouts were 0.1 ± 0.01 g. Final weights were 26.5 ± 5.19 g and 12.97 ± 2.74 g, respectively at the end of experiment. Survival and FCR of rainbow and brown trouts were 83.9 and 80% ; 0.59 and 0.61 respectively. As a result, there is a similarity between these two trout species in point of survivals and FCR’s although growth performance of the rainbow trout was significantly better than that of the brown trout.
Key words: Rainbow trout, brown trout, fry, growth, survival.