BULLHEAD EARLY SEEDING PRODUCTION METHOD CAPABLE OF PREPARING A BASE FOR THE BULLHEAD COMPLETE CULTURE AND PRODUCING THE SEED THREE TO FOUR MONTHS FASTER THAN A NATURAL SPAWNING SEASON

摘要

PURPOSE: A bullhead early seeding production method is provided to provide a base for an early seeding production and a complete culture through an efficient maturation induction method of a bullhead brood fish.;CONSTITUTION: A bullhead early seeding production method comprises following steps: a step of collecting a bullhead brood fish; a step of maintaining the brood fish in a constant breeding water temperature, domesticate and culture for two weeks; a step of maturing the cultured brood fish by moving to a circulation filtering type brood fish water tub and controlling the water temperature and the photo period. The constant breeding water temperature is 23=. For the stabilization and feed acclimation of the brood fish, an external shock is excluded and a small amount of the freeze small prawn is supplied as a main feeding twice a day to domesticate. The bullhead is cultured for a three-month early mature based on the photo period and the water temperature condition of mid-June which is the spawning season of the cultured bullhead.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Bullhead adult fish production; (BB) Bullhead mother collection; (CC) Management and breeding; (DD) Sexual maturity inducement by environment control; (EE) Spawning and fertilization; (FF) Roe growing; (GG) Bullhead roe production; (HH) Bullhead farming;