Hierarchical cultivation method of seahorse seedlings

Abstract

The invention discloses a hierarchical cultivation method for seahorse seedlings. The primary cultivation is carried out in a glass box filled with light green seedling-raising water. Artemia larvae are firstly fed, and then 80-mesh copepods are used for feeding. The seahorse seedlings The growth is good, and the seedlings are cultivated to a length of more than 15mm; the second, third, fourth and fifth grades are cultivated in indoor nursery ponds with light green seedling water, and the bait for the second grade cultivation is copepods over 80 mesh, which is conducive to feeding and growth , cultivated until the seedling body length is more than 25mm, the bait for the third-level cultivation is mysis or shrimp seedlings, the third-level cultivation is until the seedling body length is more than 40mm, and the fourth-level cultivation starts to domesticate and feed the bait by gradually increasing the frozen shrimp, and cultivate to the seedlings The body length is more than 55 mm, and no mysis or shrimp seedlings are added at the end of the five-level cultivation, and the frozen shrimp is completely fed, and the seedlings are cultivated to a body length of more than 70 mm; the hippocampus seedlings cultivated by the method of the present invention have neat specifications and good adaptability , a higher growth rate.

Description

Technical field [0001] The invention relates to the technical field of fish seedling breeding, in particular to a hierarchical cultivation method of sea horse seedlings. Background technique [0002] The conditions for cultivating sea horse seedlings are clean natural seawater with a specific gravity of 1.010~1.030, a dissolved oxygen above 4mg / L, a pH value of 7.5-9, and a water temperature of 24~32℃. But currently it is usually only a one-time cultivation. For example, the invention patent with the authorized announcement number CN1219430 discloses a method of cultivating seedlings from the male hippocampus nursery sac to about 5cm. The water temperature is 24-28℃, the specific gravity is 1.010~1.016, and the dissolved oxygen is above 5mg / L. , One-time cultivation in an indoor cultivation pond with natural seawater with a pH value of 8~8.5. The seedling body length is less than 4cm to feed rotifers, cladocerans or copepods, etc. The seedling body length is 4~5cm to feed clade ...

AI Technical Summary

Problems solved by technology

For example, the invention patent with the authorized announcement number CN1219430 discloses a method of cultivating seedlings from male hippocampus brood sacs to about 5 cm in size, at a water temperature of 24-28°C, a specific gravity of 1.010-1.016, and dissolved oxygen above 5 mg / L , with a pH value of 8 to 8.5 in an indoor cultivation pond with natural seawater and other conditions. The seedlings are less than 4 cm long and fed with rotifers, cladocera or non-jointed copepods, etc., and the seedlings with a body length of 4 to 5 cm are fed with clad horns. class or copepods or mysis, the seedling body grows to about 5cm and the seedlings are bred, and can be fed with feeds such as small hairy shrimp, mysis, and all seedlings of this invention are all cultivated together. The ability to compete for food and resistance varies. Weak and small seedlings are easy to be eliminated, so the survival rate of seedlings is low, and the specifications of the seahorse seedlings cultivated are also uneven. At the same time, there is no stress training for the seedlings. Poor adaptability to the environment, great stress response, easy to die