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- W3109478872 abstract "African catfish, Clarias gariepinus, is an introduced species and has been an important food supporting the fulfillment of food security in Indonesia. Along with increasing popularity as a farmed fish, it gradually showed lower aquaculture performance due in part to the deterioration of genetic quality of fry resulting from inappropriate and uncontrolled of broodstock. An African catfish breeding program aimed to cope with the problem was set in 2010 at the Research Institute for Fish Breeding, Sukamandi, Indonesia. Started with four founder populations, namely Egypt (29%), Paiton (27%), Sangkuriang (24%), and Dumbo (20%), a synthetic base population was established in 2011, and an individual selection targeting on growth improvement was conducted. A hundred broodstock were spawned to produce breeding candidates, and 5 percent of best-performing fish were selected in each generation. Genetic parameters (genetic gain and genetic variability) and a series of aquaculture performance-related traits including growth, feed conversion ratio (FCR), productivity, resistance to disease, size uniformity, and benefit/cost ratio were recorded. Following three successive generations of selection, over 50% of the accumulative genetic gain was obtained. This genetic gain consisted of 20%, 11%, and 20% from the first, second, and third generations, respectively. Field farm tests aiming at comparing the aquaculture performance of the selected strain against the existed local strains also showed promising results. It was 10-40% better in growth, 15-70% better in productivity, 2-9 times higher in benefit-cost ratio, shorter growing period (45-60 days), lower feed conversion ratio (0.6-0.8 in nursery and 0.6-1.0 in grow out) and higher survival (60-70%) following challenge test against Aeromonas hydrophyla infection. It also produced a higher uniformity in size, 80-90% in the fry production stage, and 70-80% in grow-out production. It seemed that there was an indication of positively correlated responses among growth and those traits. Selective breeding in African catfish by applying individual selection carried out at RIFB was managed to obtain a significant genetic improvement while maintaining genetic diversity." @default.
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- W3109478872 date "2020-11-21" @default.
- W3109478872 modified "2023-09-25" @default.
- W3109478872 title "Development of Genetically Improved Farmed African Catfish, Clarias gariepinus; A Review and Lessons Learned from Indonesian Fish Breeding Program" @default.
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- W3109478872 doi "https://doi.org/10.1088/1755-1315/593/1/012032" @default.
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