Directional mating and breeding method in Eriocheir sinensis breeding

A Chinese mitten crab, directional mating technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of small Chinese mitten crabs, loss of aquaculture industry, frequent diseases, etc., and achieve low cost , The amount of eggs can be controlled, and the effect of high yield

Inactive Publication Date: 2011-09-21
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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Problems solved by technology

However, due to the disorderly mixing of Chinese mitten crabs from different water systems, inbreeding and other reasons, the cultured C...

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  • Directional mating and breeding method in Eriocheir sinensis breeding
  • Directional mating and breeding method in Eriocheir sinensis breeding

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Embodiment Construction

[0013] 1. Directed mating method:

[0014] 1.1 Selection and intensive cultivation of parents: Select parents with normal body shape, good growth, no disease, complete appendages, and mature gonads. After marking, the male and female are raised separately. It is about 5% of the body weight of the parent crabs temporarily, so as to promote the fattening of the parent crabs and the further development of the gonads.

[0015] 1.2 Oriented mating: catch the parent crabs that have been intensively cultivated for 25 days from the earthen pond, and rinse them with clean water. When constructing a full-sib family, male and female are 1:1, when constructing a half-sib family, male and female are 2:1 or 3:1, and the parents are placed in a pre-prepared polyethylene cylindrical parent crab mating cage with a diameter of 50 cm and a height of 60 cm. ( figure 1 ), the net cage is sunk into the outdoor earth pond, and the bottom of the net cage is put into mud 3-5cm, and directional matin...

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Abstract

The invention relates to a directional mating and breeding method in Eriocheir sinensis breeding, comprising the following steps of: referring to the Eriocheir sinensis standard GB/T19783-2005, selecting male and female Eriocheir sinensis individuals with mature gonads from different species groups in the first ten-day period of November as parents, after labeling, breeding the male and female Eriocheir sinensis individuals separately, and strengthening cultivation; in the last ten-day period of November, pairing and putting the parents subjected to cultivation strengthening into cylindrical net cages weaved by polyethylene soft plastic, wherein each cylindrical net cage is 50 cm in diameter and 60 cm in height, and the salinity of water is 0.209; distributing a male crab for each net cage, wherein the ratio of female to male of full sib directional mating is 1:1, and the ratio of female to male of half-sib directional mating is 2: 1 or 3: 1; putting the obtained egg-carrying crabs into a 2*667 m<2>*1.5 m outdoor soil pond for overwintering cultivation; in the middle ten-day period of April of next year, pumping out the water in the pond to catch the egg-carrying crabs, putting the egg-carrying crabs into cylindrical net cages weaved by polyethylene soft plastic, wherein the cylindrical net cages are respectively 20 cm in diameter and 50 cm in height and are respectively arranged in net boxes in size of 3*2*1.5 m in other soil ponds respectively, and one egg-carrying crab is arranged in each net box; after the culturing of young crabs is finished, taking out the parents, and performing soil pond cultivation for the juvenile crabs according to the Eriocheir sinensis artificial breeding standard SC/T1099-2007.

Description

technical field [0001] The invention relates to a directional mating and seedling raising method in the selection and breeding of Chinese mitten crab families. Background technique [0002] Eriocheir sinensis is a rare and precious freshwater aquatic product unique to my country. It is favored by consumers and is an important pillar industry of freshwater aquaculture in Jiangsu Province. However, due to disorderly mixing of Chinese mitten crabs from different water systems, inbreeding and other reasons, the cultured Chinese mitten crabs become smaller, have frequent diseases, and decline in quality, which has brought huge losses to the aquaculture industry. Therefore, in recent years, family selection breeding technology has been successfully applied to the breeding of Chinese mitten crabs. Through family selection, the germplasm of Chinese mitten crabs has been purified, the specifications and quality of breeding have been improved, and huge social benefits and economic be...

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 李跃华朱清顺柏如发邓燕飞
Owner FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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