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A kind of induction method for prolonging the spawning time of gilthead seabream

A gilthead seabream, time technology, applied in the induction field of prolonging the spawning time of gilthead seabream, can solve the problems of prolonging the spawning time of gilthead seabream, prolonging the spawning time of gilthead seabream broodstock, etc., achieving the extension of spawning time, The effect of prolonging the spawning time

Active Publication Date: 2022-07-08
深圳市海聚源水产科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A kind of induction method for prolonging the spawning time of gilthead seabream
  • A kind of induction method for prolonging the spawning time of gilthead seabream
  • A kind of induction method for prolonging the spawning time of gilthead seabream

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Embodiment 1

[0057] The breeding site was selected as Shenzhen Nan'ao Fish Steak, and a total of 446 gilthead seabream broodstock were cultured and divided into two groups. The control group implemented some environmental conditions control, and the control group did not control.

[0058] The control group began to adjust and control in September 2019, and controlled the light duration by opening and closing the shading cloth, keeping the daily sunshine duration <12 hours, and at the same time using the above method to strengthen the nutrition of gilthead seabream broodstock. In November 2019, the water temperature dropped to 23°C, and induction of labor was started. The injection doses were: 500IU / Kg HCG, 16mg / Kg LHRH A2. Egg laying started 48 hours after the injection, and the next round of hormone injection could be carried out when the egg laying stopped. The spawning process lasted for 6 months and ended in April 2020, during which the water temperature ranged from 16.8-23°C, the sali...

Embodiment 2

[0068] The breeding site was selected as an open-air cement pond in Nan'ao, Shenzhen. A total of 214 broodstock gilthead bream were cultured in 8 cement ponds. The water depth is 1.5m, the aquaculture 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 a shading cloth to keep the daily sunshine duration <12 hours, and at the same time fortifying 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. In November, the induction of labor was injected. The injection dose was: 500IU / kgHCG, 16mg / kg LHRH A2 . After 48 hours of injection, the eggs start to be laid, and the next round of hormone injection can be carried out when the eggs are stopped. The spawning process lasts for 6 months and ends in A...

Embodiment 3

[0080] The breeding site was Nan'ao fish steak in Shantou, and 512 broodstock gilthead seabream were cultured in two groups. The control group was controlled by some environmental conditions, and the control group was not controlled. The water depth is 1.5m, the aquaculture water body is about 1200 cubic meters, and the breeding density is about 0.36kg / m 3 .

[0081] The control group began to adjust and control in July 2020, and controlled by opening and closing the shading cloth, keeping the daily sunshine duration <10 hours, and at the same time, the broodstock was nutritionally enhanced. In September 2020, the water temperature dropped to 24°C, and induction of labor was started. The injection doses were: 320IU / kg HCG, 18mg / kg LHRH A2. After 48 hours of injection, the eggs start to be laid, and the next round of hormone injection can be carried out when the eggs are stopped. In the middle of January, the water temperature was lower than 14°C, and the broodstock stopped s...

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Abstract

The invention discloses an induction method for prolonging the spawning time of gilthead bream. The broodstock of gilthead bream is selected, wherein the age composition of gilthead bream broodstock includes individuals of 1-5 years; The breeding environment factors of the broodstock gilthead bream are controlled, and after 2 months of controlling the culturing environmental factors of the broodstock gilthead bream, the broodstock gilthead bream is subjected to hormone injection to induce the broodstock of the gilthead bream to produce production. egg. By controlling environmental factors and injecting hormones, the spawning time of gilthead seabream broodstock can be effectively prolonged. Under some environmental control conditions, the spawning time can be prolonged by 1.17-2 times, and under full environmental control conditions, spawning can be achieved throughout the year.

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 aquaculture and the basis for building marine pastures. my country is vigorously promoting the development of aquaculture. Due to its fast growth rate, strong disease resistance, tender meat and rich nutrition, gilthead sea bream is known as the "royal sea bream" in Europe and one of the most important fish species in aquaculture in South Asian countries, which is of great significance for promotion. However, the basis for the promotion of excellent germplasm resources is to provide sufficient seed supply. At present, the germplasm breeding of gilthead seabream is mainly based on natural spawning. In the natural environment, the spawning time of gilthead seabream is 3-4 months. , affected by water temperature and light cycle. [0003] ...

Claims

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Application Information

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