Study of usage possibility of underground brackish water for broodfish rearing of Rainbow trout (Oncorhynchus mykiss) and evaluation of gametes quality

Subject Areas : New Technologies in Aquaculture Development

Received: 2020-01-25 Accepted : 2020-01-25 Published : 2009-11-22

Keywords:

Abstract :

Abstract There is a high potential of aquaculture with the use of underground brackish water especially in central areas of Iran. On the other hand, environmental factors have so important effects on gonad quality of rainbow trout. According to these factors and the earlier gonad maturation of rainbow trout in brackish water, usage possibility of underground brackish water for broodfish rearing of Rainbow trout (Oncorhynchus mykiss) and evaluation of their gametes quality have was studied. Broodfish have reared for 6 months in both underground brackish water (11.5 ppt) in Bafgh area and in fresh water in Yasouj region. Results showed that there was no significant difference in growth indexes of broodfish (weight, length and condition factors). They were also matured and spawned successfully in Bafgh area. Moreover gonad quality in brackish water was better than fresh water significantly. In result, broodfish rearing will be useful in underground brackish water, if suitable thermal condition is prepared. [1] * - Corresponding Author; Email: [e-mail]