1 results about "Hormone injections" patented technology

This invention relates to a method for regulating the late autumn breeding of mandarin fish, belonging to the field of artificial fish breeding in aquaculture technology. The operation of this invention is as follows: (1) Inducing spawning in spring by injecting a high dose of a single oxytocin into the mandarin fish parent stock; (2) Under the action of the high dose of the single oxytocin, partial spawning is completed, achieving an average spawning volume per female fish of 20%-30% of the theoretical spawning volume in spring; (3) After spawning until the end of June, controlled feeding management is carried out to reduce the amount of feed, so that the fish are in a nutritional state of maintenance or slow growth; (4) In July and August, nutritional enhancement cultivation is carried out, and sufficient feeding is restored for a period of time before formal spawning to promote the rapid secondary development of the gonads of the parent mandarin fish; oxytocin is injected at a conventional effective dose to induce artificial insemination of the parent mandarin fish, resulting in concentrated spawning, achieving an average spawning volume per female fish of 80%-90% of the spawning volume in autumn. This invention can achieve the dual use of mandarin fish parent stock in one year through conventional hormone injection and feed management.