Method for cultivating epinephelus septemfasciatus offspring seeds

Abstract

The invention discloses a method for cultivating epinephelus septemfasciatus offspring seeds, which comprises the steps of: culturing the offspring seeds under the conditions that the salinity is 28+/-2, the water temperature is 19+/-2 DEG C, the pH value is 8+/-0.3 and the dissolved oxygen is more than 6mg/l, controlling the seedling distributing density to be 8000-15000/M<3>; before newly hatched larvae enter a pool, putting a composite bacterium (photosynthetic bacterium and nitrobacterium) according to the concentration of 2ppm, adding 0.5ppm of composite bacterium and 1ppm of shrimp feedevery day after 5 days, adding 1ppm of composite bacterium and 1ppm of shrimp feed every day after 25 days, and stopping adding the composite bacterium and the shrimp feed after 50 days; illuminatingthe newly hatched larvae at 2000-4000lx until the newly hatched larvae grow to the 10th day, illuminating the epinephelus septemfasciatus growing from the 11th day to the 30th day at 1000-3000lx and illuminating the epinephelus septemfasciatus growing from the 31st day to the 60th day at 500-1000lx; after the newly hatched larvae enter the pool, sucking and removing pollutants at the bottom of the pool at the beginning of the 30th day; feeding the newly hatched larvae growing from the 4th day to the 7th day SS (Som Somatostatin) type wheel animalcule and hardly developing before the wheel animalcule is fed to the larvae, wherein larva feed comprises the SS small wheel animalcule and common wheel animalcule; and feeding the common wheel animalcule in the newly hatched larvae growing from the 6th day to the 20th day, and developing newly hatched larvae through chlorella pyrenoidosa. The invention has the advantages of reasonable operation process and stable result, and is suitable for culturing cold temperate epinephelus septemfasciatus seeds.

Description

Technical field: [0001] The invention belongs to seawater fish seed breeding technology, in particular to a method for cultivating seven-banded grouper seed among cold temperate grouper fish. Background technique; [0002] Seven-banded grouper is the only cold-temperate rare fish species distributed in northern my country among the groupers. It has a particularly delicate and delicious taste, high nutritional value, and is very popular in the market. It is one of the few grouper fishes that can withstand low temperature, and it grows fast, has a large body, and has few diseases, so it has broad breeding prospects. [0003] Although the seven-banded grouper is a high-quality marine fish species, due to its special ecological and physiological characteristics, this species still has bottlenecks in parental breeding, insemination hatching and seedling cultivation. There is no report on the breeding of seven-banded grouper fish both at home and abroad at present. Among other gr...

AI Technical Summary

Problems solved by technology

[0003] Although the seven-banded grouper is a high-quality marine fish species, due to its special ecological and physiological characteristics, this species still has bott