Grouper fry breeding method

Abstract

The invention provides a grouper fry breeding method. The grouper fry breeding method adopts clean water to breed fries and includes steps of adding cement blocks and plastic plates with holes into a cement tank as shelters of the fries, so as to protect the fries from being scared by clear water, and culturing monodus subterraneus and rotifera as baits in the other water tanks, so as to prevent water quality in the cement tank from eutrophication and deterioration. The problem about baits can be solved by feeding. In addition, indoor fry breeding is unaffected by weather, the clear water contains few algae, organic matters and microorganisms, water quality is not easy to change, and with reasonably using photosynthetic bacteria, water quality is relatively easy to control. Accordingly, the grouper fry breeding method has the advantages of stability in fry breeding technology and high fry survival rate.

Description

technical field [0001] The invention relates to the field of animal and plant cultivation, in particular to a grouper breeding method. Background technique [0002] Grouper belongs to Perciformes, rich in nutrition, tender and white meat, similar to chicken, known as "sea chicken". At present, there are more than a dozen species of grouper that have been artificially bred, and some of them have reached the production scale. Fish, oblique-banded grouper, brown-spotted grouper, pearl gentian, saddle-banded grouper and eastern star grouper, in the artificial breeding process of grouper, water quality is critical, if the water quality deteriorates, toxic substances accumulate, or Changes in water quality will lead to seedling failure. The water quality deteriorates, the toxicity accumulates, and the fish fry will be poisoned and die; the algae grows too fast or suddenly decays, the pH value of the water body will change greatly, ammonia nitrogen, nitrite, etc. will increase, ca...

AI Technical Summary

Problems solved by technology

Due to the large water body and stable water quality, this method is easy to cultivate fry, but because it is outdoors, it is greatly affected by the weather, and it is easy to encounter bad weather such as sudden and large low temperature, high temperature, large temperature difference between morning and evening, continuous heavy rain, etc. The other is the method of raising seedlings in indoor cement ponds. This method is also to cultivate basic baits such as unicellular algae, rotifers, and protozoa in indoor cement ponds, and then put the hatched fry into fertile water. Cultivate in a cement pond, adjust the water quality according to the water color, and then feed the fleas every day until harvesting. Due to the small size of the room, the algae in the water body are affected by factors such as light intensity, temperature, and the growth of the algae. It is difficult to control the water quality. The growth of algae is not easy to control, and the algae will suddenly explode or die in a large area, pollute the water quality, release harmful substances, and the water quality of the nursery pond will change greatly. Water quality factors such as ammonia nitrogen, dissolved oxygen, and PH value suddenly Increase or decrease, resulting in a large number of fish fry death, unstable breeding effect