PENGARUH PEMBERIAN HORMON aLH-RH MELALUI EMULSI W/O/W LG (C-14) PADA PERKEMBANGAN GONAD INDUK IKAN JAMBAL SIAM (Pangasius hypophthalmus) Effect of LH-RHa Injection trough W/O/W LG (C-14) Emulsion on Gonad Development of Catfish (Pangasius hypophthalmus)

The objective of this research was to study the effect of LHRHa gonad maturity in broodstock of P. hypophthalmus through W/O/W LG (C-14) emulsion injection. The treatments consisted of control (A), 50 µg/kg fish weight (B). and 100 µg/kg fish weight (C). with five replications of each. Fish weight at the beginning of experiment was 2.0 kg/individual. The result showed that LHRHa in W/O/W emulsion had positive effect on egg maturation. This was shown by the value of average of eggs diameter. The maximum size of egg diameter for fish with hormone injection were larger than without injection. The best treatment was 50 µg/kg body weight (B) and the largest diameter was 701.52 ± 17.56 µrn. The size of eggs was more homogenous in group B than those of group C and A. It was concluded that injection of LHRHa in W/O/W LG (C-14) emulsion is effective in promoting gonad maturation and oocyte development in the catfish.