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Induction method for prolonging spawning time of sparus aurata

The technology of gilthead seabream and time is applied in the induction field of prolonging the spawning time of the gilthead seabream, and can solve the problems of prolonging the spawning time of the gilthead seabream, prolonging the spawning time of the gilthead seabream, etc. The effect of prolonging the spawning time

Active Publication Date: 2021-08-10
深圳市海聚源水产科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an induction method for prolonging the spawning time of gilthead seabream, aiming at solving the limitation that the gilthead seabream cannot break through the "breeding season" in the prior art, and prolonging the gilthead seabream's spawning time. The problem of spawning time of sea bream broodstock

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  • Induction method for prolonging spawning time of sparus aurata
  • Induction method for prolonging spawning time of sparus aurata
  • Induction method for prolonging spawning time of sparus aurata

Examples

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Effect test

Embodiment 1

[0057] The breeding site was Nan'ao Fish Raft in Shenzhen, and a total of 446 gilthead seabream broodstock were cultured, which were divided into two groups. The control group implemented some environmental conditions control, while the control group did not carry out regulation.

[0058] The control group started to regulate in September 2019, and controlled the duration of light by opening and closing the shading cloth to keep the duration of sunshine < 12 hours per day. At the same time, the above method was used to strengthen the nutrition of gilthead seabream broodstock. In November 2019, the water temperature dropped to 23°C, and the injection of induced labor was started. The injection dose was: 500IU / Kg HCG, 16mg / Kg LHRH A2. Oviposition begins 48 hours after the injection, and the next round of hormone injection can be performed after observing that the oviposition stops. The spawning process lasts for 6 months and ends in April 2020. During this period, the water temp...

Embodiment 2

[0068] The breeding site was selected as Shenzhen Nan'ao open-air cement pond breeding. A total of 214 gilthead seabream broodstock were cultured in 8 cement ponds, which were divided into two groups. The control group implemented some environmental conditions control, and the control group did not carry out regulation. The water depth is 1.5m, the breeding water body is about 1200 cubic meters, and the breeding density is about 0.36kg / m 3 .

[0069] The control group began to control some environmental conditions from September 2019, using shading cloth to keep the daily sunshine duration < 12 hours, and at the same time, nutritionally strengthened the broodstock. In late October 2019, the actual water temperature was 26.5, and the water temperature was controlled by the chiller at a cooling rate of 0.5°C / day to reduce the water temperature to 20°C. Injection of induced labor began in November, and the injection dose was: 500IU / kgHCG, 16mg / kg LHRH A2 . After 48 hours after ...

Embodiment 3

[0080] The breeding site was Nanao Fish Raft, Shantou, and a total of 512 gilthead seabream broodstock were cultured, which were divided into two groups. The control group implemented some environmental conditions control, while the control group did not carry out regulation. The water depth is 1.5m, the breeding water body is about 1200 cubic meters, and the breeding density is about 0.36kg / m 3 .

[0081] The control group began to regulate and control in July 2020, and controlled by opening and closing the shading cloth to keep the daily sunshine duration <10 hours, and at the same time strengthen the nutrition of the broodstock. In September 2020, the water temperature dropped to 24°C, and the injection of induced labor was started. The injection dose was: 320IU / kg HCG, 18mg / kg LHRH A2. After 48 hours after the injection, oviposition begins, and the next round of hormone injection can be carried out after observation that oviposition stops. In the middle of January, the w...

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Abstract

The invention discloses an induction method for prolonging spawning time of sparus aurata. The method comprises the following steps: selecting parent sparus aurata, wherein the parent sparus auratus comprises individuals of 1-5 years in the aspect of age composition; after the parent sparus aurata is selected, controlling culture environment factors of the parent sparus aurata, and after the culture environment factors of the parent sparus aurata are controlled for 2 months, injecting hormones into the parent sparus aurata to induce the parent sparus aurata to lay eggs. By controlling environmental factors and injecting hormones, the spawning time of the parent sparus aurata can be effectively prolonged, the spawning time can be prolonged by 1.17-2 times under partial environmental control conditions, and the whole-year spawning can be realized under the whole environmental control conditions.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to an induction method for prolonging the spawning time of gilthead seabream. Background technique [0002] Excellent germplasm resources are the core of the aquaculture industry and the basis for building marine ranches. my country is vigorously promoting the development of the aquaculture industry. Due to its fast growth, strong disease resistance, tender meat and rich nutrition, gilthead sea bream is known as the "royal sea bream" in Europe, and it is also one of the most important fish species in aquaculture in South Asian countries, which is of great promotional significance. However, the basis for the promotion of high-quality germplasm resources is to provide sufficient seed supply. At present, the germplasm breeding of gilthead seabream is mainly based on natural spawning. Under the natural environment, the spawning time of gilthead seabream is 3-4 months. , affected by water tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 蔡添光陈建驰潘科
Owner 深圳市海聚源水产科技有限公司
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