International Journal of Research Publication and Reviews, Vol 4, no 12, pp 157-163 December 2023 International Journal of Research Publication and Reviews Journal homepage: www.ijrpr.com ISSN 2582-7421 Selection of Fast Growth and Disease Resistance Traits in Brood Stock Candidates of Silver Pompano (Trachinotus Blochii) Verli Dharmawati a* , Akhmad Murtadho b , Tri Haryono c , Rakhmat Hadi Saputra d , Margie Brite a , Dwi Handoko Putro b , Putut Har Riyadi e , Asmanik a a Marine and Land Bioindustry Research Center, National Research and Innovation Agency, Central Jakarta 10340, Indonesia b Fisheries Research Center, National Research and Innovation Agency, Central Jakarta 10340, Indonesia c Mining Technology Research Center, National Research and Innovation Agency, Central Jakarta 10340, Indonesia d Lampung Center for Marine Cultivation Fisheries, Ministry of Maritime Affairs and Fisheries, Pesawaran 35450, Indonesia e Faculty of Fisheries and Marine Science, Diponegoro University, Semarang 50275, Indonesia * Email Corresponding: verli.dharmawati@brin.go.id DOI: https://doi.org/10.55248/gengpi.4.1223.123307 A B S T R A C T Provision of superior broodstock silver pompano (Trachinotus blochii) is important in supporting the sustainability of seed production activities, one of which is by selecting superior traits from prospective parent seeds. This study aims to select prospective silver pompano broodstock based on superior traits such as fast growth and disease resistance. The method used to select the weight of fish from spawning and hatching eggs in the same cycle. Fry size based on fast-growing group at 1.5 g and control at 1.0 g with a density of 5 fish/l were reared in fiber tanks for 56 days with a running water system. Commercial feed was fed ad satiation, and growth performance was observed every 14 days. The results showed that the absolute weight of the fast-growing fish group was 23.51 ± 1.28 g which was significantly different (p<0.05) from the control which was 18.75 ± 0.78 g. The daily growth rate of fast-growing fish and control group were 5.29 ± 0.18 and 5.40 ± 0.06 (g/day), respectively. FCR values in fast-growing and control group fish were 1.15 ± 0.06 and 1.39 ± 0.08, respectively. The fish survival rate of the fast- growing and control groups were 98.78 ± 1.35% and 97.45 ± 4.14%, respectively. Post-challenge survival for fast-growing fish was 80±26.46% while the control was 76.7±11.55% where this value was significantly different (p value <0.05). The fast-growing fish group was superior in the parameters of absolute weight and survival of the challenge test compared to the control fish. Keywords: Silver Pompano, Disease Resistance, Selection, Superior Traits, Fast Growing 1. Introduction Silver pompano (Trachinotus blochii) is a marine fish farming commodity that needs to be developed for export activities. Silver pompano has been sold under the Pompano trademark, star pomfret cultivation technology has been mastered at a high production level (Syukra, 2020) and has high economic value. Silver pompano is in great demand because it has good taste, is adaptable and has fast growth, namely seed rearing to consumption size takes less than 12 months (Weirich, et al., 2021). Seed maintenance from 80 grams can reach 500 - 600 grams within 6 months with a selling price range of IDR 60,000 - 90,000/kg. Silver pompano aquaculture is still dependent on wild-caught broodstock, which is unpredictable. High-quality and disease-free broodstock are few and far between. The availability of sustainable silver pompano seeds and broodstock candidates has experienced many obstacles, especially in terms of the preparation of quality broodstock candidates. Good quality seeds are only produced from good quality broodstock and using good fish hatchery methods. The provision of superior silver pompano parents in supporting the sustainability of seed production activities is needed, one of which is by selecting superior traits from prospective fish parents (Ma, et al., 2017). The genetic quality of a group determines the phenotypic appearance of the group. Fish seed groups with high quality and supported by a good environment will provide maximum production results (Tave, 1996). Seed groups with high genetic quality can be obtained through a breeding program. Freshwater fish breeding techniques that are widely developed are selection techniques by exploiting the potential and genetic characters, especially the variety of additive genes (VA). Selection does not create new genes, but exploitation of VA will change the frequency of genes to improve genetic quality qualitatively and quantitatively with the goal of obtaining superior parents (Hardjosubroto, 1994). Individuals or groups are selected based on their superior traits, such as fast growth, high resistance to disease and others (Weirich, et al., 2021). Fish selection based on growth rate and disease resistance is most often done because it is easy to do and the superior traits will be passed on to the next generation (Luo, et al., 2017; Xie, et al., 2014; Yi, et al., 2013). The provision of seed candidates that have fast growth characteristics plays an important