Artificial cultivation and domestication method of American shad fry and fingerlings

Abstract

The invention relates to an artificial cultivation and domestication method of American shad fry and fingerlings, which optimizes the soil pond artificial cultivation steps through the measures of controlling water quality and baits in a soil pond, putting the fry in the pond as early as possible, carrying out special treatment on the baits for domestication and feeding and the like, thereby avoiding the death of American shads under stress to the maximum extent, greatly reducing the labor intensity, significantly improving the growth speed and having the advantages of simple operation, low cost, good domestication fry and fingerlings and the like. The artificial cultivation and domestication method comprises the following four steps: 1, biological cultivation and incubation management ofthe baits in the pond; 2, feeding with zooplankton; 3, feeding with special feeds, which is divided into two rearing stages: the feeding with the zooplankton is reduced and the feeding with the special feeds is simultaneously carried out in the first stage and only the feeding with the special feeds is carried out in the second stage; and 4, feeding with artificial expanded feeds, which is also divided into two rearing stages: the feeding with the special feeds is reduced and the feeding with the artificial expanded feeds is simultaneously carried out in the first stage and only the feeding with the artificial expanded feeds is carried out in the second stage.

Description

technical field [0001] The invention relates to a method for artificially cultivating and domesticating shad seedlings, belonging to the technical field of fish farming. Background technique [0002] American shad, scientific name Alosa sapidissima, English name American shad, also known as American shad, herring family, sprats. American shad is famous for its tender, plump and plump meat, which is favored by consumers and has high economic value. [0003] Due to breakthroughs in the introduction, hatching, breeding and artificial propagation of American shad's fertilized eggs, it is urgent to form a set of artificial cultivation and domestication technology for seedlings. American shad fry open their mouths to feed early. Basically, they can open their mouths after 2-3 days of filming at a water temperature of about 20°C, and juvenile fish have a strong stress response. Improper manual operations can lead to mass death. Therefore, other fish Seed rearing techniques are no...

AI Technical Summary

Problems solved by technology

American shad fry open their mouths to feed early. Basically, they can open their mouths after 2-3 days of filming at a water temperature of about 20°C, and juvenile fish have a strong stress response. Improper manual operations can lead to mass death. Therefore, other fish Seed rearing techniques are not suitable for breeding shad

At present, American shad fry are cultivated in small indoor cement ponds or cement ponds with net cages, and the domestication of feeding is by using beating as its feeding signal or using lights to tame food at night. There are stresses and bait abundance in the small environment. The poor quality of the American shad leads to slow growth of American shad, difficulty in transportation and transfer, and because American shad has high requirements on water quality, it must frequently absorb sewage and increase labor intensity, etc.