HYBRIDIZATION of SELAIS (Ompok rhadinurus) and PATIN (Pangasius hypopthalmus)

Abstract

This research was conducted from December 2011 to May 2012 in Hatchery and Breeding Laboratory, Faculty of Fisheries and Marine Sciences, University of Riau. The objective of the research was to know the success fullness of hybridization between sheatfish (Ompok rhadinurus) and Patin catfish (Pangasius hypopthalmus). The sheatfish broodstock were obtained from the Laboratory Fish Hatchery and Breeding Faculty of Fisheries and Marine Sciences, University of Riau, while Patin catfish derived from rearing fish farmers in ponds Sungai Pinang Kampar Regency. Incubation containers used were 30x30x30cm3 aquarium and one fiberglass tank size 300x60x40cm3. Both broodstock were induced with 0,5 ml/body weight ovaprim to fertilize the egg. The results showed that the hybridization between the sheatfish and patin catfish have been successfully carried out and obtain fertilization rate of 76.20% and 81.92%, the hatching rate of 65.37% and 65.48%, survival rate after 4 days of 56,85% and 69,33%. Where as for 7 days survival rate was 30,20% and 34,05 %. The best respectively heterosis values was obtained of 26,43%. And the lowet value of heterosis was 3,21 %. Survival rate was 25,78% (4 days) and 24,39% (7 days). Water quality were parameter temperature 29-300c, pH from 5-6 and dissolve oxygen 1,8- 3ppm.