Spawning Technology and Seed Production of Tapah Fish (Wallago leerii B ) by the Injection of Different Doses of sGnRH + Domperidone

Abstract

This research was conducted by first accelerating Tapah fish gonad maturity by providing Vitamin E which is applied through a trash fish food. Efforts gonadal maturation lasted for eight months, from February to September 2014. The purpose of this study is to accelerate the maturity of gonads parent fish and induce spawning them by injecting hormone sGnRH + Domperidone with different doses. Experimental method was used in the study. Fish used in the experiment were  2.5-3.0 kg of body weight with the first initial gonad maturity (or level I). Parent fish reared in a floating cage measuring 4 x 3 x 2.5 m, which is installed in the Kampar River, the village of Pelalawan. The dose of vitamin E 100 mg / kg body weight applied through the feed pellets. A few pellet particles inserted into a capsule, and subsequently inserted in the trash fish gills before it was given to the captive fish. The results showed that an increase in the maturity of the fish eggs, from Maturity Level I (one) into a maturity level III and IV. An  application of sGnRH + Domperidone through an intramuscular injection apparently have not been able to spawn. Water quality record during the study showed a temperature range between 27-33 ° C, with a pH of 5.

Key words: Wallago leerii B¹, Vitamin E², Gonad maturity³,  sGnRH + Domperidone spawning⁴.