Squid breeding is from the stage of Wuzai or summer flower to the stage before commercial fish production. The eel fry is an important production link for the subsequent commercial fish breeding and raising the economic income of the fishery. In the actual breeding process, natural and artificial factors often cause the survival rate of seedlings to be low and affect the economic benefits. I have been engaged in squid farming for many years, and now I have summarized some experiences in improving the survival rate of squid breeding for your reference.
First, choose the pond: To choose the shape of the rules, convenient drainage, less silt, in the local (north-cold mountainous areas in the north) is best to be able to winter, easy to pull the net operation of the pond.
Second, the preparation of bait fish: bait fish is the key to ensure the survival rate of the summer fish pond, fish food palatability is a key issue, the bait fish body length is preferably less than 1.52 times the length of the carp summer flower body, The best varieties were grass, alfalfa, alfalfa, alfalfa, alfalfa and so on.
Third, the choice of seed: When purchasing the squid summer flower species, we must choose the best-selling varieties of the local market, which will not only benefit the economic benefits generated by sales will be considerable. The standard is summer flowers with neat specifications, robust physique, and strong activity.
Fourth, suitable stocking density: direct density of stocking density
Because of the survival rate and the growth of the seedlings of the squid, the squid has to be flexibly controlled according to the source of water, the amount and type of bait fish, and the conditions of the pond. In the local (north-cold mountainous areas in the north of China), the total mu is 400,600.
V. Delivery time: The delivery time will depend on the time of the bait fish. In the local (north-cold mountain areas in the north), it is generally available from early July to July 20.
6. Reasonable feeding: The number of bait fish when carp seedlings are planted in ponds is 40,100 times the number of carp. Each time they are added once every 7 days, the amount of supplement is 30 to 50 times the amount of carp. It is best to add more varieties at the same time. 70 days can grow to 100150 grams, the survival rate of 85% to 95%.
7. Overwintering management of carp species: Overwintering period management is an important part of pond culture and must be highly valued. For many years of production practice, carp overwintering should be carried out strictly according to the technical regulations of fish safety wintering management, especially dissolved oxygen must be Guaranteed above 3.5 mg/L, pH value of 6.58, ensure survival rate of over 97%.
The above are some of the experiences gained during the breeding of carp. If the farmers can perform scientific breeding according to the above methods, and exclude natural factors, the survival rate of carp species can reach 80% to 90%, and even reach 95% or more. , greatly increased the economic benefits of breeding.
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