و تركيب با آنتاگونيت هاي دوپامين LHRH-A القاي اوولاسيون در مولدين فيتوفاگ با استفاده از هورمون

Ovulation induced in brood fishes of Hypophthalmichthys molitrix by using LHRH-A hormone and its combination with dopamin antagonists

In this study in order to investigate the effects of LHRH-A and its combination with dopamin antagonist, Metaclopramid (MET), Dopeidon (Dom), 21 females of Hypophthalmichthys molitrix were studied in Shaid Ansari fish rearing and propagation center during June 2001. The results showed that LHRH-A+MET treatment group with 2g+15,12mg/kg dose, indicate high response (100%) in brood fishes, and other factors have significant differnces (p<0.05) compared to other treatment groups. Also, investigation on the degree-hour of sexual maturity in different treatmnt groups show that the groups with introduced Dom (in suspension from) as dopamin antagonist combined with LHRH-A, indicated higher degree-hour (288,366 degree-hour) and has significant difference compared to other treatment groups. In addition this study indicates that MET as suitable dopamin antagonist can strengthen LHRH-A for final sexual maturity, also can decrease LHRH-A dose for injection, but Dom has not the mentioned effects in artificial propagation of Hypophthalmichthys molitrix and this can be due to applying suspension form of antidopamin in hormone solution of this research.