Java tilapia breeding marking method

A marking method, tilapia technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of large difference in detection effect of fluorescent markers, no significant survival rate, limited use range, etc., and achieve obvious distinction effect , low cost, and the effect of reducing damage

Inactive Publication Date: 2010-12-29
GUANGXI INST OF FISHERIES
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Problems solved by technology

Experiments by Pierson et al. showed that after 110 days of rearing, the retention rate of fluorescent substances in tilapia was 78%, and there was no significant difference in the marker retention rates between the fluorescent group and the fin-cutting group, and the survival rate of the marker fish in the two groups was not significant; b

Method used

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  • Java tilapia breeding marking method

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Embodiment Construction

[0047] This experiment was carried out in the National Guangxi Nanning Tilapia Breeding Farm.

[0048] The method of the invention includes: 1. preparation before marking; 2. fish body marking method and marking plan; 3. fish body marking.

[0049] 1. Preparation before marking

[0050] 1) Pulling the net to practice fish

[0051] Stop feeding the fish that will be marked the day before, and perform net pulling exercises to adapt the fish to external stress; at the same time, the fish secrete mucus and excrete feces during the intensive process to increase the adaptability to hypoxia. When pulling the net, drive the fish into the net slowly, lift the net clothes, and put the fish back into the original pond after 30 minutes in a semi-water state.

[0052] 2), pull net fishing

[0053] Before marking, pull net fishing and select 200 tilapia families with similar specifications that need to be marked, with a weight of about 20 grams, to eliminate the impact caused by the large ...

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Abstract

The invention relates to a java tilapia breeding marking method. The method comprises the following steps of: firstly counting the amount of fish to be marked, and then selecting the corresponding combination for marking according to the amount; secondly when marking, putting the fish flatly on a desk, covering the eyes of the fish by using a towel, and sterilizing the part where a fin ray is pulled out with 75 percent alcohol; thirdly using a scalpel to separate the membrane connected with the fin ray to be pulled out, pressing lightly on the java tilapia with a hand, using hemostatic forceps to hold the fin ray tightly and pull out the fin ray along with the root, and sterilizing the wound at the root of the fin ray with 75 percent alcohol; and finally soaking and sterilizing the markedfish into 2 percent solution of table salt. The method does not affect the normal activity of java tilapia and can meet the demands of large-scale java tilapia breeding marking along with simple operation, low cost, lower extent of damage on the fish body, a mark retention rate of above 98 percent, and an effective recognition rate of 100 percent.

Description

technical field [0001] The invention belongs to the technology of fish marking in the field of aquaculture, and relates to a technical method for identifying groups and detecting each fish in tilapia breeding. Background technique [0002] Tilapia has the characteristics of fast growth, strong adaptability, and fresh and tender meat. It is the leading freshwater species in my country and is of great significance to my country's export earnings. In recent years, due to the excessive pursuit of tilapia production and the neglect of the protection of germplasm resources between parents, the parents have been impure and inbreeding has affected the rapid development of the tilapia industry. In order to breed new varieties of tilapia with high quality and high efficiency, the current existing problems must be solved through selective breeding. [0003] In the tilapia breeding process, the limited number of experimental ponds and the scale of breeding (especially family selection)...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 林勇唐章生甘西李莉萍唐瞻杨陈忠张永德曾兰朱佳杰
Owner GUANGXI INST OF FISHERIES
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