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 broodsto

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  • Method for artificial inducing spawning of trachinotus ovatus

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Embodiment 1-A method for artificially inducing labor of oval pomfret, characterized in that it comprises the following steps:

[0029] (1) Broodstock selection

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

[0031] (2) Intensive cultivation of induced labor

[0032] Put the broodstock into the intensive cultivation pond for induced spawning for 30 days; the temperature of the water entering the pond is 21°C, 7 days after entering the pond, the water temperature is increased 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; replace 6% of pool water with composite seawater every 3 days, the composite seawater is filtered seawater containing a concentration of 0.6mg / L of composite algae liquid and 0.3mg / L of composite bacteria;

[0033] Feed the fortified bait 3 times a day. The fortified bait ...

Example Embodiment

[0038] Example 2-A method for artificially inducing labor of oval pomfret, including the following steps:

[0039] (1) Broodstock selection

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

[0041] (2) Intensive cultivation of induced labor

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

[0043] The composite algae fluid includes Dichr...

Example Embodiment

[0051] Example 3-A method for artificially inducing labor of oval pomfret, including the following steps:

[0052] (1) Broodstock selection

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

[0054] (2) Intensive cultivation of induced labor

[0055] The broodstock were put into a spawning intensified cultivation pond for 40 days; the water temperature in the pond was 19℃, 6 days after entering the pond, the water temperature was raised to 26℃ at a rate of 0.3℃ every 2 days; micro water flow was used in the pond. Circulating pool water, the water velocity is 0.5m 3 / s; every 5 days, 10% of the pool water is replaced with composite seawater, the composite seawater is filtered seawater containing a composite algae solution with a concentration of 0.8mg / L and a composite bacterial agent with a concentration of 0.4mg / L; the composite algae solution includes mass The volume ratio...

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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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