Selection of shrimp seedlings
Let the people eat healthy and fresh seafood
Selection of shrimp fry species1.Native breeds:China has abundant shrimp resources, such as Chinese prawn, giant river prawn, crayfish, etc. Native varieties are selected for breeding, which are highly adaptable, fast growing, resistant to diseases, and easy to manage.
2.Introduced varieties:In recent years, some excellent shrimp fry species have been introduced, such as Penaeus vannamei shrimp, Penaeus monodon and so on. These varieties have the advantages of fast growth, good meat quality, and high market quality, but the introduced varieties need to be carefully selected and pay attention to adapting to the local environment.
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Judgment of the quality of shrimp seedlings
Observe the vitality of shrimp seedlingsObserve the vitality of shrimp seedlings: high-quality shrimp seedlings have strong vitality, strong swimming ability, and sensitive response to external stimuli. It can be judged by observing the activities of shrimp seedlings during transportation, the crawling speed after stocking, and other indicators.
Body type and colorBody shape and color: High-quality shrimp seedlings are well-proportioned, full of muscles, and bright in color. The body color of shrimp seedlings is affected by factors such as light and water quality, but generally speaking, the color of fresh shrimp seedlings is darker, and the color of dead or diseased seedlings is lighter.
Inspect the attachmentsCheck the attachments: observe whether there are parasites, bacterial infections and other phenomena on the surface of the shrimp seedlings. Healthy shrimp fry have a clean body surface and no attachments.
Reproductive abilityReproductive ability: High-quality shrimp seedlings have high reproductive capacity and can improve the yield during their cultivation. It can be judged by observing the number of reproduction of broodstock, hatching rate and other indicators.
Precautions for buying shrimp seedlings
a
Purchase channelsChoose a regular shrimp seedling ** unit to understand its reputation and after-sales service. You can consult with the local fisheries department or refer to the experience of other farmers.
b
Seasonal selectionSeasonal selection: The shrimp fry sales season is mainly in spring and autumn. The temperature in these two seasons is moderate, which is conducive to the growth and survival of shrimp seedlings.
c
Shrimp fry specificationsWhen buying shrimp seedlings, choose the right size. Shrimp fry that are too small are susceptible to disease, while shrimp fry that are too large grow faster, but may affect the culture density.
d
Trial breedingBefore buying shrimp fry in large quantities, a small-scale trial culture can be carried out. Observe the adaptability and growth of shrimp fry in the breeding environment to judge whether they meet expectations.
Yuyue LongmenLet the people eat healthy and affordable fresh seafoodThe selection of shrimp fry is the key to the success of farmingThrough the understanding of the variety, quality and purchase precautions of shrimp seedlings, farmers can better choose suitable shrimp seedlings and improve breeding efficiency. At the same time, we should also pay attention to the management and technical support in the breeding process to ensure the healthy growth of shrimp seedlings.