Larval crab cultivating pond and the cultivating method

A cultivation method and a technology for cultivating ponds, which are applied in the field of emergence and sales of juvenile crabs, can solve problems such as death, unfavorable survival of juvenile crabs, fierce and aggressive nature, etc., and achieve the effects of improving survival rate, facilitating sale in ponds, and reducing mutual killing

Inactive Publication Date: 2007-09-26
XIAMEN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the technology of artificial breeding of blue crabs is becoming more and more mature, but there are still few reports about the nutrition, salinity and temperature conditions of the breeding process of young crabs (Qiao Zhenguo. The scientific and technological progress of mud crab seedling cultivation. Ocean Fishery, 2005, 27 (2 ): 159-163), the breeding model of larvae still needs to be further improved
[0003] At present, there is a lack of special facilities for cultivating young crabs. The industry usually uses shrimp or fish nursery ponds for cultivation, but this kind of nursery ponds has the following two major disadvantages: ① Habitat environment: The young crabs live at the bottom of the sea, are ferociou

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The blue crab larvae crab cultivation pond is provided with main pond body and accepting seedling pond, and the cultivation pond area is 20m 2 , the bottom of the main pool body has a slope of 5° along the outlet, and the bottom of the main pool body is covered with a silt layer with a thickness of 10-12cm. The grain size of the sand in the silt layer is 0.5-1mm, and the proportion of sand is 70% to 75% of the total sediment. The silt layer is used for larvae crabs to bury and live in order to reduce mutual killing. There are 3 grooves on the sediment layer, the width of which is 15-18cm. The grooves extend from high to low at the bottom of the main pool body, and finally converge to the drain. The seedling pool is located at the outside and below of the main pool body drain, the length of the seedling pool is 60cm, the width is 100cm, and the depth is 60cm. There are rectangular net cages in the Namiao pond.

[0016] The water temperature in the breedi...

Embodiment 2

[0017] Embodiment 2: similar to embodiment 1, its difference is to cultivate pond area 20m 2 , the thickness of the sediment layer at the bottom is 10cm, the bottom of the main pool has a slope of 5° along the drain, and a groove is arranged longitudinally in the center of the sediment layer. In the first phase, 40,000 young crabs are put in, and the breeding density is 2,000 / m 2 , Feeding shellfish and eel feed, etc., feeding once a day, the amount of feeding is twice the body weight of young crabs, the water temperature in the cultivation pond is 25.5-28.5°C, and the specific gravity is 1.006-1.012. The whole cultivation process is continuously micro-inflated, and after 7 days of cultivation, the molting becomes the third stage larvae, and the survival rate is 86%.

Embodiment 3

[0018] Embodiment 3: similar to embodiment 1, its difference is to cultivate pond area 20m 2 , the thickness of the sediment layer at the bottom is 10cm, the bottom of the main pool has a slope of 8° along the outlet, and there are 2 grooves in the center of the sediment layer longitudinally. In the first phase, 60,000 young crabs are put in, and the breeding density is 3,000 / m 2 , feeding shellfish and eel feed, etc., feeding 3 times a day, the amount of feeding is 2.5 times the body weight, the cultivation temperature is 25.5-28.5°C, and the specific gravity is 1.006-1.012. The whole cultivation process is continuously micro-inflated, and after 7 days of cultivation, the molting becomes the fourth stage larvae, and the survival rate is 72%.

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Abstract

The invention relates to a Scylla serrata seed cultivating pool and relative method, in particular to a method for improving survival rate and growing seed Scylla serrata quickly. the invention comprises a main pool and a seed pool, wherein the bottom of th main pool is provided with a slope inclined along a water outlet, and a sand layer, the sand layer is provided with at least one groove extended from the high part to the lower part of the bottom of the main pool to be collected into the water outlet, the seed pool is arranged under the water outlet with a network box inside. The water specific weight is 1.006-1.015 while the seed cultivating density is 2000-3000n/m2, while the water is exchanged each day and the forge is fish slurry, shellfish meat, or the like to be fed for at least four times and 2-3 times of seed weight, and the whole cultivation is aerated continuously.

Description

technical field [0001] The invention relates to a breeding method for blue crabs, in particular to a method for improving the survival rate of young crabs of blue crabs and facilitating the emergence and sale of young crabs by adopting special facilities. Background technique [0002] The blue crab meat is delicious and nutritious, and it is an excellent marine cultured species. Blue crab farming has become a new marine industry. So far, the technology of artificial breeding of blue crabs is becoming more and more mature, but there are still few reports about the nutrition, salinity and temperature conditions of the breeding process of young crabs (Qiao Zhenguo. The scientific and technological progress of mud crab seedling cultivation. Ocean Fishery, 2005, 27 (2 ): 159-163), the breeding model of larvae still needs to be further improved. [0003] At present, there is a lack of special facilities for cultivating young crabs. The industry usually uses shrimp or fish nurser...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 叶海辉王桂忠林琼武李少菁陈学雷艾春香
Owner XIAMEN UNIV
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