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0.05). Lack of maturation in the first year cultured fish led to the identical growth parameters in mix sex and all-female groups (P>0.05). Results showed that use of sex-reversed males can be one of the best and successful methods of producing all-female populations.]]>
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0.05). However, after the start of active feeding there was a significant difference (P<0.05) in the growth ratio of offspring produced in the groups aged one and two months. The growth ratio of the same age offspring in the first group was higher than those in the third group (P<0.05); but there was no significant difference between the first and the second group, or between the second and the third group (P> 0.05). Based on the results, we suggest that the brood fish from the early migration period are more suitable for producing offspring and their offspring pass through the smoltification stage more rapidly. However, in terms of genetic diversity, it would be appropriate to use brood fish from all migration periods.]]>
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