Full artificial breeding technology for lateolabrax japonicus in northern area
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A technology of artificial breeding and perch, applied in the field of breeding, can solve problems such as the degradation of germplasm resources, artificial selection of breeding technology, poor seed resistance, etc.
Inactive Publication Date: 2019-04-02
OCEAN UNIV OF CHINA +1
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However, its breeding technology cannot carry out directional artificial breeding, resulting in long-term inbreeding, resulting in poorer resistance of seedlings and degeneration of germplasm resources.
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Embodiment 1
[0031] Embodiment 1: Outdoor net cages and indoor cement pools for broodstock of perch in the northern region are fully artificially cultivated:
[0032] 1. First try the breeding method and hormone injection time. The body weight of the broodstock of sea bass is more than 2.50kg for female fish and more than 2.00kg for male fish. Choose a 5*5*1m indoor cement pool. During the breeding season, inject Ningbo No. 1 fish every other day. The HCG and LRH-A3 hormones produced by the Second Hormone Factory, the immature female fish of the perch broodstock;
[0033] 2. The outdoor ponds and indoor cement ponds are cultivated, and the transportation is carried out by dry method. The death rate is relatively large, and the broodstock females are immature;
[0034] 3. Outdoor 10-acre soil bottom pond, the depth of the net cage is at least 5 meters, and the joint cultivation of 5*5*3m simple cage and 5*5*1m indoor cement pond, and the comparison test of indoor cement pond cultivation, 12...
Embodiment 2
[0044] Embodiment two: the whole artificial propagation technology of broodstock of perch in northern area,
[0045] 1. Selection of broodstock: During the breeding season, judge whether there is semen outflow by lightly pressing the abdomen, and then select the female and male fish with strong physique, smooth body surface, no injury, and some excellent traits (growth, color, disease resistance, etc.) 1. Well-developed male fish and well-developed female fish with soft abdomen, strong body, smooth body surface, no injury, some excellent traits (growth, color, disease resistance, etc.), and well-developed female fish will be the parent fish to be born in that year;
[0046] 2. By selecting HCG and LRH-A3 two kinds of veterinary hormones produced by Ningbo No. 2 Hormone Factory, and the hormone injection volume HCG800IU / kg+4ug LRH-A3 / kg, it is finally determined that the muscle near the base of the dorsal fin of the heart (the edge covered by scales, It is beneficial to the pen...
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Abstract
The invention discloses a full artificial breeding technology for lateolabrax japonicus in the northern area and belongs to the technical field of genetic breeding of aquatic products, providing a technical support for genetic breeding of lateolabrax japonicus. The full artificial breeding technology for lateolabrax japonicus in the northern area includes (1) the full artificial cultivation technology for lateolabrax japonicus in the northern area, which refers to techniques of cultivating parent fish in outdoor net cages in summer and autumn and cultivating parent fish in indoor cement pondsin spring and winter, (2) the artificial insemination and artificial incubation technology for lateolabrax japonicus in the northern area, which particularly includes techniques of selection of parentfish of lateolabrax japonicus, hormone injection, sperm and egg maturity determination, artificial insemination, one-to-one building of the full-sib family, and hatching of fertilized eggs. Accordingto the technology, female lateolabrax japonicus in four years or four years above, of which the weight is equal to or higher than 2.50kg, is in sexual maturity stage, and male lateolabrax japonicus in three years or three years above, of which the weight is equal to or higher than 2.00kg, is in sexual maturity stage.
Description
technical field [0001] The invention belongs to the field of breeding technology, and relates to a technical method that can increase the amount of seedlings of seabass in the northern region in actual production, is beneficial to protecting wild seabass seed resources, and promotes the improvement of seabass germplasm and the breeding of new varieties. Background technique [0002] Lateolabrax maculatus belongs to Perciformes, Serranidae, and Lateolabrax. It is one of the marine fish species with the highest aquaculture output in my country, with an annual output of more than 10×10 4 t. However, in recent years, my country's perch breeding industry is facing unprecedented challenges, germplasm degradation, lack of good species of perch, wild fish fry are still used as seedlings in northern areas, resulting in the destruction of wild perch resources; at the same time, no scientific and reasonable Oriented artificial breeding with advanced artificial propagation technology, l...
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