FORMATION OF SIAMESE CATFISH, Pangasianodon hypophthalmus, Sauvage, 1878 (PANGASIIDAE; SILURIFORMES) F2 BASED ON SELECTION OF CHARACTER GROWTH

Suharyanto, Jatmiko Darmawan dan Evi Tahapari
 
Research Institute for Fish Breeding,  Sukamandi, West Java, Indonesia
E-mail: suhar.yanto83@ymail.com

Research on the formation of Siamese catfish F2 is one part of the assembly of superior strains of catfish. The research objective is to get a prospective parent of siamese catfish                F2 selection results based on character growth. In 2015, the parent has done spawning populations F1 selection results the previous year and the parent population control. F2 seedling population resulting from the breeding between relatives maintained separately from the parent population selection and control. Siamese catfish seedling populations F2 consists of 10 family selection and eight families control in cohort 1 were then used as material selection in this year's study. Selections are made at the age of 11 months of age and the selection differential values ​​obtained siamese catfish F2 cohort 1 are selected by 281.57 g which means that the average weight of the population of selection increased by 30.82%. In this year also made the establishment of seedling populations of catfish Siamese F2 consisting of 10 families and 3 families of selection on the control cohort 2 were then used as material selection in research in 2017. The population of siamese catfish F2 selection had a higher growth performance than the control. Values ​​response character selection on body weight siamese catfish populations F2 cohort 1 aged 11 months in the amount of 21.34% (ΔG = 164.21 g) and the siamese catfish populations F2 cohort 2 5 months of age in the amount of 10.50% (ΔG = 10.47 g), so that the known value of the selection response average in the population of siamese catfish F2 of 15.92%. F2 siamese catfish population has the potential to be proposed as a candidate for release catfish is superior because it has the combined value of the selection response ≥30,00%, the combined value of the selection response between populations of siamese catfish F1 and F2 Siamese catfish population of 36.83%.

Key words: Siamese catfish (Pangasius hypophthalmus), F2, selection, growth character