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¹ National Research and Innovation Agency, Research Organization of Earth and Maritim, Research Center for Fishery, Bogor, West Java, Indonesia (16911)
² Aquaculturist at Batu Kumbung, Lingsar, West Lombok, West Nusa Tenggara, Indonesia DOI : 10.4194/TRJFAS27060 Viewed : 41 - Downloaded : 42 This research aimed to evaluate the relationship between the culture periods and the heterosis of hybrid catfish population and its culture in several locations with different altitudes. Induced breeding was conducted to obtain the reciprocal crossing populations of three catfish varieties. Heterosis during nursery and growing up stage was analyzed based on the SGR-length and the SGR-weight, respectively. For multi-locations purpose, the hybrid population with the best heterosis was cultured for 55 days at three different altitudes, that is, <200 m asl, 300-400 m asl, and >400 m asl. The results showed that the highest SGR-length heterosis was found at 68 days of age, about 28.41%, and the highest SGR-weight heterosis was observed at 95 days of age, about 31.28%. This result indicates that the growth of hybrid catfish is better than that of its parents. In the multi-locations test, the highest heterosis of SGR-weight, about 8.39%, was found in the culture location with an altitude of 300-400 m asl. The stability performance analysis showed that the hybrid catfish was categorized as a genotype with dynamic stability. These findings imply that this hybrid catfish can be cultured in various cultivation models and environments with better harvest yield than other populations. Keywords : Altitude Catfish Hybrid vigor Multi locations Performance stability