Large-scale cultivation method for summer fingerlings of Pelteobagrus fulvidraco

Abstract

The present invention relates to a method for large-scale cultivating Yellow Catfish and belongs to the technical field of aquiculture. The larval fishes which are hatched for three days are put into the cultivation pond. The cultivate density of larval fishes is 150-200 thousand / mu. The larval fishes are cultivated to the Yellow Catfish with lengths of 2.5-3cm after 20-30 days. The cultivation pond is the earth pond with area of 2mu to 3mu. The thickness of slit on the base of pond is 25-30cm. The pond is placed with sustained-release bag which is filled with fertilizer. The sunny surface ofpond back part is provided with a temporary cultivation area of which the area is 1-1.5% of the area of cultivation pond. The bottom adopts the hard material which is nontoxic and smooth at the surface and has the ripple shape. The temporary cultivation area is additionally provided with oxygen heads with the density of 1-2 / square meter. The invention adopts a technique of building the temporary cultivation area for integrating the temporary cultivation stage and larvae cultivating. The method of the invention has the advantages of easy assembling, brief operating program, easy management, and high survival rate of larvae for above 80%. The sustained-releasing technique of fertilizer is adopted for keeping the cleanness of pond base and realizing non-pollution cultivation.

Description

Technical field

[0001] The invention relates to a fish breeding technology, in particular to a large-scale breeding technology of yellow catfish summer flower fingerlings, belonging to the technical field of aquaculture. Background technique

[0002] Pseudobagrus fulvidraco Richardson (Pseudobagrus fulvidraco Richardson) belongs to the genus Siluriformes, Catfish, and Pseudobagrus fulvidraco Richardson. It is widely distributed in major water bodies in my country and is a fish with high economic value. Its meat is tender, delicious, rich in nutritional value, without intermuscular thorns, and is well received by the public. The domestic and foreign market demand is increasing. In addition, yellow catfish has the characteristics of strong adaptability to the ecological environment, wide temperature tolerance, strong disease resistance, food habits, low feed coefficient, and can be marketed live. Therefore, the development of yellow catfish breeding industry has a good prospect. ...

Examples

Embodiment 1

[0023] The technical scheme of the present invention combines the temporary breeding of larvae and the summer flower cultivation stage into one, and the specific scheme (process) is as follows:

[0024] (1) Cultivation pond and seedling assembly

[0025] See attached figure 1 It is a schematic diagram of the structure of a cultivation pond provided by the technical scheme of the present invention; the cultivation pond is an earthen pond 1 of 2 to 3 acres, and the bottom silt is 25-30cm thick. The yellow catfish fry has the habit of avoiding light, so it is on the back of the earth pond. The wavy asbestos tiles or color steel plates are placed at the bottom of the pond as the temporary breeding area 3. The area of ​​the temporary breeding area is 1 to 1.5% of the cultivation pond, and the corrugation height is 3 to 5 cm. Drain the water 15 days before the seedling, and clear the pond with 150-200kg / mu of quicklime and then dry the pond to kill pathogenic organisms in the earth pond...

Embodiment 2

[0037] The implemented pond area is 2.2 acres. On May 18, 400kg of quicklime dry pond was used to clear the pond. On May 25, 50kg of fermented rapeseed cake was sprinkled on the bottom of the pond. The breeding area is equipped with a 150W blower, several aerator tubes, 24 aerator heads, and 6 corrugated asbestos tiles of 68cm×200cm. On May 26, put 50cm of outer lake water, and at the same time, put 18 fertilizer slow-release bags, each containing two-thirds of fermented chicken manure; on May 29, add water to 70cm, and put 3 in the morning at 7:00. 350,000 day-old yellow catfish fry, size 0.7~0.8cm, cultivated with aeration. From June 1st, a small amount of fish paste and broken yellow catfish feed were put on the asbestos tile, twice a day, one-third of the shot from 7:00 to 8:00 in the morning, and three-point shot from 4:00 to 5:00 in the afternoon. of two. Sprinkle 80g of Nuobiqing biological preparations on June 1st and 11th, sprinkle 2kg of copper sulfate and ferrous s...

Technical field

[0001] The invention relates to a fish breeding technology, in particular to a large-scale breeding technology of yellow catfish summer flower fingerlings, belonging to the technical field of aquaculture. Background technique

[0002] Pseudobagrus fulvidraco Richardson (Pseudobagrus fulvidraco Richardson) belongs to the genus Siluriformes, Catfish, and Pseudobagrus fulvidraco Richardson. It is widely distributed in major water bodies in my country and is a fish with high economic value. Its meat is tender, delicious, rich in nutritional value, without intermuscular thorns, and is well received by the public. The domestic and foreign market demand is increasing. In addition, yellow catfish has the characteristics of strong adaptability to the ecological environment, wide temperature tolerance, strong disease resistance, food habits, low feed coefficient, and can be marketed live. Therefore, the development of yellow catfish breeding industry has a good prospect. ...

Examples

Embodiment 1

[0023] The technical scheme of the present invention combines the temporary breeding of larvae and the summer flower cultivation stage into one, and the specific scheme (process) is as follows:

[0024] (1) Cultivation pond and seedling assembly

[0025] See attached figure 1 It is a schematic diagram of the structure of a cultivation pond provided by the technical scheme of the present invention; the cultivation pond is an earthen pond 1 of 2 to 3 acres, and the bottom silt is 25-30cm thick. The yellow catfish fry has the habit of avoiding light, so it is on the back of the earth pond. The wavy asbestos tiles or color steel plates are placed at the bottom of the pond as the temporary breeding area 3. The area of ​​the temporary breeding area is 1 to 1.5% of the cultivation pond, and the corrugation height is 3 to 5 cm. Drain the water 15 days before the seedling, and clear the pond with 150-200kg / mu of quicklime and then dry the pond to kill pathogenic organisms in the earth pond...

Embodiment 2

[0037] The implemented pond area is 2.2 acres. On May 18, 400kg of quicklime dry pond was used to clear the pond. On May 25, 50kg of fermented rapeseed cake was sprinkled on the bottom of the pond. The breeding area is equipped with a 150W blower, several aerator tubes, 24 aerator heads, and 6 corrugated asbestos tiles of 68cm×200cm. On May 26, put 50cm of outer lake water, and at the same time, put 18 fertilizer slow-release bags, each containing two-thirds of fermented chicken manure; on May 29, add water to 70cm, and put 3 in the morning at 7:00. 350,000 day-old yellow catfish fry, size 0.7~0.8cm, cultivated with aeration. From June 1st, a small amount of fish paste and broken yellow catfish feed were put on the asbestos tile, twice a day, one-third of the shot from 7:00 to 8:00 in the morning, and three-point shot from 4:00 to 5:00 in the afternoon. of two. Sprinkle 80g of Nuobiqing biological preparations on June 1st and 11th, sprinkle 2kg of copper sulfate and ferrous s...

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