Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for increasing fry collecting rate and young fry survival rate of ricefield eels in artificial propagation

A technology of artificial reproduction and survival rate, which is applied in the fields of fish farming, application, climate change adaptation, etc., can solve the problems such as difficult accurate judgment of eel spawning time, and achieve the effects of easy popularization and application, accurate time calculation and simple method

Inactive Publication Date: 2014-04-02
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for improving the seedling collection rate and seedling survival rate in the artificial propagation of rice field eels, which is easy to implement and easy to operate, and solves the problem in the artificial propagation of rice field eels that is difficult to accurately judge the spawning time of rice field eels. difficult problem, making the seedling collection time of rice field eel more accurate, thereby effectively improving the seedling collection rate and seedling survival rate in artificial breeding of rice field eel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for increasing fry collecting rate and young fry survival rate of ricefield eels in artificial propagation
  • Method for increasing fry collecting rate and young fry survival rate of ricefield eels in artificial propagation
  • Method for increasing fry collecting rate and young fry survival rate of ricefield eels in artificial propagation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for improving seedling rate and seedling survival rate in the artificial propagation of rice field eel, the steps are:

[0027] 1. Broodstock pairing: fish out the bred eel broodstock from the broodstock incubator, and select healthy, disease-free, and trauma-free paddy eels as broodstock for breeding. For male fish, choose broodstock with a body weight of 200-300 g, no obvious abdominal swelling, and reddish genital pores. For female fish, choose broodstock with a body weight of 75-150 g, an obviously enlarged abdomen, and dilated and sunken genital pores. Each breeding cage is paired with 4 female fish and 2 male fish.

[0028] 2. Regular inspection of the cages: On July 10th, when the cage No. Ⅱ-56 was inspected, it was found that there was a nest of foam in the cage, but there were no eggs in the foam. Carry out double mark to this net cage, promptly hang the red brand mark net cage on the net cage, and mark on the water hyacinth leaf of the position of f...

Embodiment 2

[0036]A method for improving seedling rate and seedling survival rate in the artificial propagation of rice field eel, the steps are:

[0037] 1. Broodstock pairing: Same as Case 1.

[0038] 2. Regular inspection of cages: On July 10th, when the cage No. Ⅲ-09 was inspected, it was found that there was a nest of foam in the cage, but there were no eggs in the foam. Carry out double mark to this net cage, promptly hang the red brand mark net cage on the net cage, and mark on the water hyacinth leaf of the position of foam. This cage was rechecked on July 12, and there were still no eggs in the foam. I checked again on July 14 and found that there were eggs in the foam, but the eggs did not change color.

[0039] 3. Determine the seedling collection time:

[0040] The records and calculation results are as follows:

[0041]

[0042] According to the calculation method, this situation should be counted from the day when the eggs were found, that is, July 14, and pushed back...

Embodiment 3

[0045] A method for improving seedling rate and seedling survival rate in the artificial propagation of rice field eel, the steps are:

[0046] 1. Broodstock pairing: Same as Case 1.

[0047] 2. Regular inspection of the cages: On July 10th, when the cage No. IV-11 was inspected, it was found that there was a nest of foam in the cage, but there were no eggs in the foam. Carry out double mark to this net cage, promptly hang the red brand mark net cage on the net cage, and mark on the water hyacinth leaf of the position of foam. This cage was rechecked on July 12, and there were still no eggs in the foam. On July 14th, I checked again and found that there were eggs in the foam, and the eggs had changed color.

[0048] 3. Determine the seedling collection time:

[0049] The records and calculation results are as follows:

[0050]

[0051] According to the calculation method, this situation should be counted from the day when the eggs were found, that is, July 14, and pushe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for increasing the fry collecting rate and the young fry survival rate of ricefield eels in artificial propagation, comprising the following steps of: (1) erecting a propagation net cage; (2) selecting and pairing parent fishes; (3) regularly checking the net cage; (4) determining the fry collecting time; and (5) artificially collecting fries and opening young fries. Through solving the problem that the spawning time of the ricefield eels is not easy to accurately judge in the artificial ricefield eel breeding process, the fry collecting time of the ricefield eels is more accurate, so that the fry collecting rate and the young fry survival rate of the ricefield eels in artificial propagation are effectively increased. The method provided by the invention is simple and feasible, accurate in time projection and can be used for popularizing and applying an artificial ricefield eel propagation technology. By using the method, the fry collecting rate of the ricefield eels is increased from about 60% to over 90%, and the young fry survival rate is increased from about 70% to over 95%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for improving the seedling collection rate and seedling survival rate in the artificial propagation of rice field eels. The method is simple and easy to operate. Background technique [0002] Field eel (Monopterus albus) is a subtropical fish, also known as eel, luoyu, field eel, long fish, yellow ginseng, scaleless son, field ginseng, etc., belonging to Synbranchia and Synbranchidae; There is only one species in the world, namely rice field eel. Widely distributed in Japan, Thailand, Indonesia, Philippines, Malaysia, India, Japan, North Korea and my country in Southeast Asia, it is distributed in my country except the Qinghai-Tibet Plateau, especially in the middle and lower reaches of the Yangtze River, where the distribution density is large and the output is high. important economic fish. [0003] At present, the artificial propagation of rice field ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 柳凌朱祥云张洁明郭峰张涛
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com