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Method for artificial inducing spawning of trachinotus ovatus

A technology for artificial induction of labor and pomfret, which is applied in the field of artificial induction of oval pomfret, and can solve the problems of reduced induction rate and fertilization rate, low hatching rate and seedling emergence rate, prolonged effect time, etc.

Active Publication Date: 2020-07-07
陵水德林诚信水产养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The effect of artificial induction of broodstock is often closely related to fish age, maturity, water temperature, nutritional conditions, oxytocin period, and dose of oxytocin drugs. However, the artificial induction of broodstock of ovate pomfret has great differences in the effect of artificial induction of broodstock, and broodstock induction is affected by seasonality. When the water temperature is high or low, there are often problems such as insufficient gonad development of male and female broodstock, prolonged effect time of broodstock after induction of labor, and decreased induction rate and fertilization rate, resulting in low hatching rate and emergence rate

Method used

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  • Method for artificial inducing spawning of trachinotus ovatus

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1-a kind of method for artificial induced labor of oval pompano, is characterized in that, comprises the steps:

[0029] (1) Selection of broodstock

[0030] Select 4-year-old female and male pomfret adult fish artificially cultured as broodstock, and the male-to-female ratio of broodstock is 2:1;

[0031] (2) Oxygenated intensive cultivation

[0032] Put the broodstock in the oxytocin intensive cultivation pond for intensive cultivation for 30 days; the water temperature in the pond is 21°C, and after 7 days in the pond, the water temperature is raised to 28°C at a rate of 0.5°C every 3 days; the pond adopts micro-flow circulation Pool water, the water velocity is 0.5m 3 / s; 6% of the pool water is replaced with composite seawater every 3 days, and the composite seawater is filtered seawater containing a composite algae solution with a concentration of 0.6mg / L and a composite bacterial agent of 0.3mg / L;

[0033] The fortified bait was fed three times a da...

Embodiment 2

[0038] Embodiment 2-a kind of method of egg-shaped pomfret artificial induced labor, comprises the steps:

[0039] (1) Selection of broodstock

[0040] Select 6-year-old female and male pomfret adult fish from artificial breeding as broodstock, and the male-to-female ratio of broodstock is 1:1;

[0041] (2) Oxygenated intensive cultivation

[0042]Put the broodstock into the oxytocin intensive cultivation pool for intensive cultivation for 50 days. The water temperature in the pond is 18°C. After entering the pond for 5 days, the water temperature is raised to 25°C at a rate of 0.3°C every 2 days; Circulating pool water, water velocity is 0.6m 3 / s; 10% of the pool water is replaced with composite seawater every 5 days, and the composite seawater is filtered seawater containing a composite algae solution with a concentration of 1.2mg / L and a composite bacterial agent of 0.7mg / L;

[0043] The compound algae liquid includes Chrysalis liquid, Pyramides liquid and Schizochytriu...

Embodiment 3

[0051] Embodiment 3-a kind of method of egg-shaped pomfret artificial induced labor, comprises the steps:

[0052] (1) Selection of broodstock

[0053] Select 6-year-old female and male pomfret adult fish from artificial breeding as broodstock, and the male-to-female ratio of broodstock is 1:1;

[0054] (2) Oxygenated intensive cultivation

[0055] Put the broodstock into the oxytocin intensive cultivation pool for intensive cultivation for 40 days; the water temperature in the pond is 19°C, and after 6 days in the pond, the water temperature is raised to 26°C at a rate of 0.3°C every 2 days; the pond adopts micro-water flow Circulating pool water, the water velocity is 0.5m 3 / s; 10% of the pool water is replaced with composite seawater every 5 days, and the composite seawater is filtered seawater containing a composite algae solution with a concentration of 0.8mg / L and a composite bacterial agent of 0.4mg / L; the composite algae solution includes quality Chrysoflagellate l...

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Abstract

The invention provides a method for artificial inducing spawning of trachinotus ovatus. The method comprises the following steps: (1) a parent fish is selected, (2) inducing spawning intensified breeding of the parent fish is performed, wherein a water temperature is increased by 0.3-0.5 DEG C every 2-3 days; every 3-5 days, compound seawater is used to replace 6-10% of pool water; a fortified bait is fed 3-4 times each day; and the light is extended for 10-15 min every two days; (3) temperature-controlled injection of oxytocin is performed 3 times for artificial inducing spawning; and after 3times of the temperature-controlled oxytocin injection, a water flow rate is adjusted to 0.8-1.4 m<3> / s, and a light period is prolonged to 15 L / 9 D-16 L / 8 D; and (4) artificial insemination and hatching are performed. In the method, the parent fish is subjected to inducing spawning intensified breeding, and a manner of 3 times of temperature-controlled injection inducing spawning is used, so that the parent fish is subjected to inducing spawning under different water temperature environments, and the water flow rate and light period after injecting oxytocin are increased, so that the parentfish inducing spawning effect is effectively improved, the effect time is shortened, and a fertilization rate and a hatching rate are high.

Description

technical field [0001] The invention relates to aquaculture technology, in particular to a method for artificially inducing spawning of oval pomfret. Background technique [0002] Oval pomfret, commonly known as golden pomfret, belongs to Perciformes and Pomfretaceae. It is an important edible fish cultured in seawater along the southern coast of my country. Its meat is tender, delicious and has high nutritional value. In recent years, the scale of artificial breeding of ovata pomfret has been continuously expanding in various places. To realize the artificial breeding of ovata pompano, the maturation and spawning of broodstock of ovata pomfret is the key technology. [0003] The effect of artificial induction of broodstock is often closely related to fish age, maturity, water temperature, nutritional conditions, oxytocin period, and dose of oxytocin drugs. However, the artificial induction of broodstock of ovate pomfret has great differences in the effect of artificial indu...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K10/22A23K10/30A23K10/37A23K50/80
CPCA01K61/10A23K50/80A23K10/30A23K10/37A23K10/22Y02P60/87Y02A40/818Y02A40/81
Inventor 林川刘德林李有文陈泽冻
Owner 陵水德林诚信水产养殖有限公司
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