Method for breeding hippocampi over winter

A breeding method and technology of seahorses, which are applied in fish farming, application, climate change adaptation, etc., can solve problems that affect aquaculture production, there is no literature to disclose seahorses, and the survival rate is low, so as to improve the survival rate and reduce the burden of management operations , the effect of reducing the probability of disease outbreak

Inactive Publication Date: 2011-08-10
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the breeding process, the artificial overwintering of hippocampus often has a low survival rate, which seriously affects the

Method used

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  • Method for breeding hippocampi over winter
  • Method for breeding hippocampi over winter
  • Method for breeding hippocampi over winter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: When the temperature decreases with the seasons, the juvenile hippocampus of 1 to 2 months old size is moved into a 2.5m×1.5m×2.0m glass tank with a temperature control of 28°C for temporary cultivation, and the water body is filtered through sedimentation sand. The dissolved oxygen concentration is kept above 5mg / L, the salinity is kept at 23-25‰, and the densities of larvae hippocampus are 300, 450, and 600 / m respectively. 3 For juvenile-size seahorses, feed the fortified copepods, keep the bait density at about 5-10 / ml, and add multivitamins to the nutrient fortification, the multivitamins include 0.1-0.15mL / m 3 V B1 and 0.05~0.1mL / m 3 V B12 , Absorb sewage and change water every day, the amount of water changed is about 1 / 5 of the total volume, and the water quality should be monitored in time.

[0019] Table 1 Effects of different stocking densities on growth rate and survival rate of hippocampus

[0020]

[0021] Note: a, b show significant diffe...

Embodiment 2

[0034] Embodiment 2: When the temperature decreases with the seasons, move the medium-sized seahorse of 3 to 4 months old specification into a glass jar with a temperature control of 28°C of 2.5m×1.5m×2.0m for temporary cultivation, and the water body is filtered by sedimentation sand. The dissolved oxygen concentration is kept above 5mg / L, the salinity is kept at 23-25‰, and the stocking densities of medium seahorses with a size of 6-10cm are 50, 150, and 300 / m respectively. 3 , Feed live mysis, juvenile or frozen mysis seedlings that account for 10% of the body weight, absorb sewage and change water every day, the amount of water changed is about 1 / 5 of the total volume, and the water quality should be monitored in time.

[0035] Table 4 Effects of different stocking densities on growth rate and survival rate of hippocampus

[0036]

[0037] Note: a, b show significant difference in survival rate among treatments; A, B show significant difference in body length among trea...

Embodiment 3

[0049] Embodiment 3: When the seasonal temperature drops, the adult hippocampus of the age of 5 to 6 months is moved into a 2.5m × 1.5m × 2.0m glass tank with a temperature control of 28°C for temporary cultivation, and the water body adopts sedimentation sand Filtered natural seawater, the dissolved oxygen concentration is kept above 5mg / L, the salinity is kept at 23-25‰, and the stocking density of adult hippocampus with a size above 10cm is 10, 50, 100 / m 3 , Feed live mysis, juvenile or frozen mysis seedlings that account for 10% of the body weight, absorb sewage and change water every day, the amount of water changed is about 1 / 5 of the total volume, and the water quality should be monitored in time.

[0050] Table 7 Effects of different stocking densities on growth rate and survival rate of hippocampus

[0051]

[0052] Note: a, b show significant difference in survival rate among treatments; A, B show significant difference in body length among treatments (P<0.05)

...

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Abstract

The invention relates to a method for breeding hippocampi over winter. The method is characterized by comprising the following steps and measures of: (1) performing temporary breeding for 9 to 10 days and nutrition enhancement, namely transferring the hippocampi cultured in a culture pond into different glass boxes according to sizes to perform nutrition enhancement; and (2) after the nutrition enhancement, cooling slowly to the suitable over-winter temperature of the hippocampi of different sizes at the speed of reducing 1.5 to 2.5 DEG C per 12 hours and transferring the hippocampi to the culture pond, where natural seawater which is subjected to precipitation and sand filtering is used; dissolved oxygen concentration of the water is retained to be above 5 mg/L; salinity is retained to be 2.3 to 2.5 percent; pH value is controlled to be 7.7 to 8.5; residual baits, dead substances and other precipitates at the bottom of the pond are removed at fixed time every day; and seawater with the same temperature and the same volume is supplemented. Compared with the prior art, the method has the advantages that: based on the difference of immunity of the hippocampi with different sizes, baits are thrown in the pond pertinently and the hippocampi are concentrated and grouped to be subjected to reinforced culture before winter, so that survival rate of the hippocampi can be effectively increased, management operation burden is reduced, and outbreak probability of diseases is reduced.

Description

technical field [0001] The invention relates to a method for cultivating fish, in particular to a method for cultivating seahorses. Background technique [0002] Hippocampus (Hippocampus kuda) is an order of Syngthidae, Hippocampus (Hippocampus), is an important medicine-derived economic ornamental fish in China, and has a great market demand. In recent years, due to artificial overfishing and environmental pollution, its natural resources The retention is low and it is difficult to recover naturally. Therefore, artificial breeding has become the only choice to meet the market demand and then protect the seahorse resources. For relevant literature on artificial breeding, you can refer to "Biological Characteristics and Breeding Techniques of Seahorses" written by Li Lu et al. in "China Aquatic Products" No. 7, 2004, and "Taiwan Strait" No. 5, 2004 "Study on Artificial Breeding and Seedling Technology of Hippocampus" by Du Qinghong et al., Volume 23, Issue 2. Related paten...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 徐永健孙彬戴广谱葛奇伟卢光明陆慧贤
Owner NINGBO UNIV
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