Abstract
Red tilapia (Oreochromis spp.) is widely cultivated because it has high economic value. However, at the same age, the growth and thickness of red tilapia flesh are lower than that of black tilapia, which is necessary to improve genetics, one of which is a breeding program. The purpose of this study was to evaluate growth performance and estimate the value of the genetic parameter of the synthetic based population (F0) of red tilapia. Spawning was done naturally using happa with 30 males and 90 females. The number of families produced was 30 families, consisting of male and female sub populations. Enlargement activities were carried out for 90 days with a stocking density of 7 fish/m2 and a frequency of feeding 2 times a day. The estimated heritability was 0.26±0.07 with a response to selection of 18.52 g (male) and 0.35±0.09 with a response to selection of 20.69 g (female). Based on these parameters, the selection process for the next generation can still be done by increasing the number of families.
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