| abstract |
The invention belongs to the field of fish breeding, and discloses an artificial breeding method of four-fingered mackerel. The method comprises the following steps: (1) feeding the fry of the four-finger mackerel in seawater to obtain juveniles; (2) feeding the juveniles obtained in the step (1) with a first-stage feed to carry out the first seawater desalination; The juvenile fish is fed the second-stage feed, and the second stage of seawater desalination is carried out; and then the third-stage feed is fed to the juvenile fish, and the third stage of seawater desalination is carried out until the salinity is 1-5‰, and the fish is domesticated; (3) the step (2) The obtained domesticated fish are fed in ponds until fishing; the first-stage feed, the second-stage feed and the third-stage feed all include kombucha, chitosan oligosaccharide and sodium chloride. The method can obviously improve the immunity of the juveniles, reduce the stress response in the process of reducing salt, enhance the adaptability, shorten the domestication time of the juveniles, and improve the survival rate. |