A feeding method to improve the survival rate of eel juveniles
A technology of survival rate and juvenile fish, which is applied in the field of feeding to improve the survival rate of ricefield eel juveniles, can solve problems such as ricefield eel enteritis, hemorrhage, insufficient bait nutrition, and affect the survival rate of juvenile fish, so as to achieve the goal of improving the survival rate Effect
Active Publication Date: 2020-08-04
SHANGHAI ACAD OF AGRI SCI +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, waterworms are basically used as bait for juvenile rice field eels in production, but the nutrition of a single bait is not comprehensive enough, and waterworms need to be disinfected in time, otherwise it is easy to cause ricefield eel enteritis and hemorrhage (Fan Haiping, 2001 ), thus affecting the survival rate of juveniles
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] A bait and feeding method for improving the survival rate of yellow eel juveniles includes the following specific steps:
[0024] 1) Cage production and installation: open net cages are sewn with polyethylene no-nodular mesh. The net mesh of the cage is 40 mesh, the diameter of the upper and lower ropes of the cage is 0.6cm, and the length of each cage is 1m. , 1m wide and 100cm high; the cages are fixed in a large shed, the draught of the cages is 0.3m, and the bottom of the cage is 40cm away from the bottom of the pond; the cages are arranged in a single row, and the distance between each row of cages is about 0.1m;
[0025] 2) Putting aquatic plants: Put 1 / 2 area of water lotus in the cage, and use 20g / m for all aquatic plants before placing 3 Disinfect copper sulfate for 2 hours;
[0026] 3) Stocking juvenile fish: 120 days after the aquatic plants were placed, healthy 6-day-old eel juveniles (imitated ecological artificial cultivation in Changshu production base) were s...
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
Login to View More Abstract
The invention discloses a feeding method for increasing survival rate of juvenile swamp eels; the method comprises the steps: stocking juvenile swamp eels in a net cage, casting mixed feed of cladocerans and Limnodrilus hoffmeisteri once every afternoon, and entering a growth phase of juvenile swamp eels 30 days after the cultivation of the juvenile swamp eels. Ceriodaphnia cornuta, Moina macrocopa, Daphnia pulex and Limnodrilus hoffmeisteri which are widely spread, bred fast, fostered easily and rich in nutrition are allocated reasonably according to food intake behaviors according to the juvenile swamp eels having different day-ages, the need of juveniles for nutrition is met, and the method has the advantages of high survival rate of juvenile swamp eels, good convenience of material obtaining, wide applicable range, low cultivation cost, high economic benefit and the like.
Description
Technical field [0001] The invention relates to the technical field of aquaculture, in particular to a feeding method for improving the survival rate of the juvenile eel. Background technique [0002] At present, China's monopterus albus (Monopterus albus) artificial breeding technology is relatively mature, large-scale fishing, agricultural production, large-scale use of chemical fertilizers and pesticides, increased water pollution, and hardening of ditches and rivers, have led to a sharp decrease in wild eel resources. Breakthrough progress has been made, the number of seedlings per unit area is low, the survival rate of seedlings (especially the period when the yolk sac of the eel seedlings basically disappears in the juvenile period is not more than 30 days) is low, and the supply of seedlings of the eel is seriously insufficient, which restricts the further development of the rice field eel industry development of. The low survival rate of rice field eel juveniles has a lo...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A23K50/80A23K10/20
CPCA01K61/00Y02A40/81
Inventor 周文宗刘娅琴黄伟伟吕卫光
Owner SHANGHAI ACAD OF AGRI SCI