Method for utilizing running water net cages to breed whitmania pigra
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A wide-body leech and cage breeding technology, applied in animal husbandry and other directions, can solve problems such as losses, farms cannot make ends meet and other problems, and achieve the effects of quick investment, significant social and economic benefits, and strong adaptability.
Active Publication Date: 2014-01-01
JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
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Problems solved by technology
At present, the main breed of leech culture is the wide-bodied golden leech, and the main breeding method is pond culture. Due to the lack of systematic and in-depth understanding of the wide-bodied golden leech biology, ecological habits and breeding techniques, most farms are unable to make ends meet and suffer operating losses.
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Embodiment 1
[0025] Embodiment 1: a kind of method of living water net cage cultivation wide-body leeches, the method comprises the steps:
[0026] (1) Make the net cage; the structure of the net cage is as follows figure 1 As shown, the manufacturing method of the net cage is as follows: a semi-open rectangular parallelepiped net cage box body 1 of 8 meters × 3 meters × 1.15 meters is made by adopting 60 meshes of polyethylene and non-nodular mesh, and 8 meters × 1.15 meters are used. 3 meters × 0.85 meters of steel frame is made into box frame 2; the fixed position of box body mesh 1 and box body frame 2 is at 50cm upwards from the bottom of the box body; foam plastic floats are fixed on the four sides of the box body top; The upper outline of the body 1 is straightened with a nylon mesh outline with a diameter of 3 mm; the 1 corner of the box body is tightened with No. 10 iron wire, and the upper part of the net cage box body 1 is 15 centimeters above the water surface; and the net cage...
Embodiment 2
[0032] Embodiment 2: It is basically the same as Embodiment 1, the difference is: in step (3), insecticide and sterilization are carried out before the aquatic plants are put into the net cage, so as to avoid bringing parasites or pathogens into the net cage.
Embodiment 3
[0033] Embodiment 3: It is basically the same as Embodiment 1, except that in step (4), the leech with wide body mainly uses snails, river clams, etc. as bait. The snails are disinfected and put in together with aquatic plants. The breeding period of the snail coincides with the breeding period of the broad-bodied golden leech, and the small wide-bodied golden leech can eat small snails. It is not advisable to put in too many snails, so as not to compete with leeches for space; the dead snails floating on the water and the snail shells at the bottom should be cleaned up in time; a suspended bait table can also be used to put bait.
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Abstract
The invention discloses a method for utilizing running water net cages to breed whitmania pigra. The method includes the following steps that (1) the net cages are manufactured; (2) the net cages are placed at the sheltered and sunny positions in a water area, and the interval between every two adjacent net cages ranges from 2m to 3m; (3) the net cages are placed into water 10 days before the whitmania pigra is placed into the net cages, meanwhile, water hyacinth, lemna minor and other aquatic plants are placed into the cages, and the placed aquatic plants account for 35-40% of the net cage water surface area; (4) food of the whitmania pigra is placed in the water area, wherein the weight of food is 2-3 times the weight of the whitmania pigra; (5) in an appropriate cloudy day early in July, the young whitmania pigra is placed into the different net cages of a river channel according to the body sizes, and the 3000 whitmania pigra is placed in each net cage; (6) in general, nets are hauled and the whitmania pigra is caught from late October. Due to the adoption of the method, the defects that artificial running water breeding cost is high, the yield of the whitmania pigra bred in natural running water surfaces is low, and the whitmania pigra is not easy to catch can be well overcome. The practice shows that due to the adoption of the method, the yield can be effectively improved and social benefits and economic benefits are remarkable.
Description
technical field [0001] The invention discloses a method for cultivating wide-bodied leeches in live water net cages. Background technique [0002] Wide-bodied golden leeches (Whitmania pigra Whitman1884), aliased as horse leeches, wide-bodied golden leeches and wide-bodied leeches, belong to the phylum ANNELIDA, class Hirudinea, and subclass Euhirudinea Lukin (1956) , Arhynchobdellida Blanchard, 1894, Hirudiniformes Caballero, 1952, Haempidae Sawyer, 1986, and Whitmania Blanchard, widely distributed in my country. The whole body of the dried leech is a traditional Chinese medicinal material, which is salty, bitter, flat, and slightly poisonous. Return liver channel. Tool breaks blood to stimulate menstruation, removes blood stasis and eliminates symptoms, and is used for amenorrhea due to blood stasis, abdominal mass in the abdomen, hemiplegia due to apoplexy, traumatic injuries. In recent years, due to the increase of the clinical demand of leeches wide-bodied, and the en...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
Inventor 葛国君何彬杨蕾王会聪
Owner JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
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