Özet:

In this study, the structural and bio-technical aspects of rainbow trout (Oncorhynchus mykiss) hatcheries in Elazığ and Malatya provinces were investigated by using real-time survey. This study was conducted from December 2013 to March 2014, in 11 active of 12 rainbow trout hatcheries that were registered Directorate of Food, Agriculture and Livestock located within Elazığ and Malatya boundaries. Structural conditions and bio-technical properties (right characteristics, maternal origin, hatching period, the eyed period, food pouch consumption periods, the amount of eggs, hatchability, feed and feeding, supplying of youngs, diseases in the growing medium, used drugs, the project capacities of the hatcheries and actual capacities) of the rainbow trout hatcheries in Elazığ and Malatya provinces were investigated. Data obtained by the real time surveys done face to face from available hatcheries, are used. The total project capacity of available rainbow trout hatcheries was 93 million units/year and the average hatching success was 70%. It was seen that available hatcheries adopted biotechnical applications however in the overall of them there was the lack of keeping data records. In some medium-sized hatcheries, out of season offspring were implemented successfully. Farming young fish at the each season is important for the sustainability of aquaculture, increasing exports and the country's economy. In Sürgü region of Malatya, there were 70-80% deaths in the three hatcheries on same water supply due to the young syndrome in the larval stage so this status should be investigated. The biggest problem of the hatcheries is the lack of organization. During the preparation of the project for rainbow trout hatcheries, determination capacity with scientific data obtained from the current field, have great importance with economic and ecological aspects. 

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