SC/T 2013-2003 Technical specification for floating seawater cage fish farming
Some standard content:
This standard was proposed by the Fisheries Bureau of the Ministry of Agriculture.
This standard was proposed by the Marine Aquaculture Sub-Technical Committee of the National Aquatic Products Standardization Technical Committee. The drafting units of the technical standard are: Guangdong Marine and Oil Products, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences. The main drafters of this standard are Chen Liang, Huang Weilian, Li Zhuojia, Zhang Hanhua, Lin Sunie, Liu Wei, and Ye Yizun. SC/T 2013—2003
1 Scope
Technical specification for floating seawater cage fish farming
SC/T 2013—2003
This standard specifies the environmental conditions, cage selection, cage design, seedling culture, feeding and disease prevention of floating seawater cage fish farming.
This standard applies to floating seawater cage fish. 2 Normative references
The clauses in the following documents become the clauses of this standard through the reference of this standard. For the dated referenced documents, all the subsequent revisions (excluding the ones with time delay) shall not be used for the technical standard. However, the parties who reach an agreement on this standard shall study whether the latest version of these documents can be used for this standard. For the undated referenced documents, the latest version shall be used for this standard. GB1160? Fishery water quality standard
SC/T10ni—1S92 General technical requirements for freshwater cage fish farming SC/T1018—1S95 Rules for the collection of yellow acid in two cages NY5071 Standard for the use of fishery drugs for pollution 3 Environmental conditions
3.1 Wind and waves
The sea area where mobile cages are set up has an annual wave production of less than 100%. It is advisable to select semi-enclosed sea areas with screens around the estuary and twists and turns.
3.2 Water quality
Water quality should comply with the provisions of GB11607, including the albedo should be greater than or equal to 1.0m, the oxygen decomposition rate is equal to 4m/L, 3.3 Water temperature
Cold water type B℃~20℃Low water type 12℃~-℃3.4 Degrees of latitude
The salinity of saltwater fish is 0~33. The salinity of seawater should be kept constant. 3.5 Water flow, water conservation, separation, channel
3.5.1 Water flow: good water exchange, flow rate is less than or equal to 1.5m/s, 3.5.2 Water depth: greater than 4m at low tide. 3.5.3 Bottom quality, hard sand or sandy mud, flat seabed, 3.5.4 Channel, net traps should be placed away from the channel. 4.1 Net cage size
The standard size of floating net cage is (3×3×3)m. (4×4×4)m, (6×6×5)m and (3×6×3)m can be used. 4.2 Cage
4.2.1 Materials. For cage materials, see 4.2.1 of SC/710C6-1992. 4.2.2 Mesh size. The size of the net is determined by the size of the fish that cannot escape from the cage. The size of the net for seedlings is (2)1,Ucm~1.5(m. The mesh size of the net for fish culture is (2u>2.5cm6.0em:1
SC/T 2013-2003
4.3 Attached net period
4.3.1 Frame: The material can refer to the provisions of 4.4.1 in 5C/T1006-1992, and the shape is generally square. 4.3.2 Floating: The material can refer to the provisions of 4,1,2 in 5C/T1006-1992. 4.3.3 The internal staggered and digital structure of the fixed object. The material can refer to the provisions of X/T105-19921.1.1, and the pinning is adopted. Each cage group uses 4 25kg--50kg pins. The diameter is 2cr~5cm. The diameter is 2~4 times the water depth. 5 net pins are set
Setting location and method
Floating seawater aquaculture cages should be set in a place that is easy to change, not affected by washing water, with good water exchange, and the screening wind and wave strength is less than 1m. The water depth where the cage is placed should be greater than four at the lowest temperature: large-sized cages should be greater than II, and the distance between the bottom of the flame and the bottom of the water should be greater than T1 m~1. 5 nl.
5.2 Assume that the egg density
is less than 1% of the suitable area of the sea area for fish farming in dynamic cages. 5.3 Assume that the arrangement direction of the cages is facing the direction of the tide. Ten cages are connected together to form a cage group. The cages are divided into main channels and secondary channels. The total channel distance is 20m or more than 13m. The distance between individual cages is 50cm--50cm or more. During the culture process, the dynamic cages are arranged regularly or irregularly. 6 Seedling cultivation
6. 1. Cultivated species
List of the main fish species that can be cultured in seawater cages. List of the main fish species cultured in seawater cages
Fish of the family Anguidae
Fish of the family Sciaenidae
Fish of the family Sciaenidae
6.2. Seed sources and seed selection
There are also stone fish, white stone fish, blood grouper, mountain short blood grouper, spotted banded fish, contact fish (sesame spot), spotted grouper, sharp hand, guard fish, etc.
, Gong Xianlang, Ran Hong Liu Hu etc. Liu Jiuliang, effective broad, flower name Hu flag shape,
big capital fish, 5 Da Huang station fish, red stone fish (British blood) Chinese marriage, iron mail, hot points, etc.
tooth shrimp, flower blood blood. Big steamed needle, etc.
Yue Lao Chi pure "wide source European dragon) ripple Qi blood (, right (Dongxing again) car Pu color red so this square material, yes, six silver fish hate please Oriental etc. 6.2.1 Seed source, seedlings mainly come from natural collection 6.2.2 Seedling exploration: seedlings require pure germplasm, good growth, busy physique, strong vitality, especially disease, no injury, complete specifications. 6.3 Seedling transportation
Seedlings should be eaten for 2 minutes before transportation, and they should be refined for more than two minutes. For long-distance transportation, oxygen-filled boxes are used. The shipping density depends on the distance from the transportation tool to the merchant, the length of time, the air and humidity, and other conditions. The transportation density of several major seedlings is shown in Table 2. 2
Transportation method
Live fish technique
Nylon standard oxygenation
[Nylon tube fuel fire
(7-KG: rmX4: rm)
5.4 Seedling stocking
6.4.1 Cultivation regulations and stocking density
Decrease 2 Transportation density of several major seedlings
Stone grouper
Grouper eggs
Guangdong red fish
Specifications and body length)/rm
SC/T 2013-2003
Transport
15x~1X0)R/m
<1 (-2 X)cell/n
50 yuan tail/m
24n00 is/m
oo product/m
(1 X--1 x>
Before the fry enter the market, the nets and fry should be disinfected, and the nets and other tools can be soaked with potassium pyrophosphate at a concentration of 23tg/kg--3cm/kg for 0.5h--1.5h. Be careful to avoid magnetic transmission when transferring the fry to the box. See Table 3 for the specifications of the fry culture oven, the specifications of the box and the stocking density of the fry culture tower in the main counties: Cultivated species
Ocean fish
Test species
Fish
Fish
Wild fish
6. 4. 2 Feeding management
With beagle (body length: /cm
Out of the box specifications/starting?
Grass-raised dense skin/(min/ml)
300--500
409·663
1D1~642
75--250
75--250
sog8u0
After the fish fungus enters the box for 3d--5d, feed frozen or fresh mixed position puffs with hemp. The method is to place a feed basket (set) in the middle section of the net cage, and feed every 3~4 times, the casting rate (the percentage of the total weight of the fish) is 15%~20%7 Edible fish identification
Fish species into the cage
3 hours before the fish species are introduced, place the cage in the selected waters, disinfect it before entering and selling, the method is shown in Table 4, the specifications of the fish species entering the cage should be consistent, and put enough at one time
Fish species disinfection before entering the cage
Drug name
Diton fluoride
High certificate joint security
7.2 Stocking time
0, 3.0.5
Treatment method
Treatment time: urin
Depends on the water temperature. Generally, the water temperature of grouper fish should be above 15℃, that of horn fish should be above 15℃, and that of other blood fish should be above 20℃. 7.3 Stocking density
For the entry and exit specifications and stocking plan, please refer to Table 33
SC/T2013—2003
Replacement species
Stonefish
Fish
7.4 Mixed culture varieties
Table 5 Stocking specifications and stocking density
Incoming specification/《g/seebzxZ.net
2:1~a0
Outgoing specification (r/min)
Changed stocking density! R/m2)
30--40
40--50
30--50
30 -- 4c
20--25
5c -- 50
Mixed culture varieties should be determined according to the proportion of 10%~20% of the main culture varieties. The principle of arrangement is flexible: the main species is omnivorous, and the main species is omnivorous, which can help the main species to eat, make full use of feed and eliminate residual feed and attached objects. For example, if 100 stone fish are rescued, 10 to 2 bluefin breams or bluefin breams can be added. 7.5 Feeding and training
After the seeds are put into the box, they are fed evenly. The initial feeding requirements are less frequent and more frequent. After 7d~10d, they are fed regularly. If the fish species in the box are from cage culture, they need to be fed and trained.
7.5.2 Feed requirements
The feed species are fresh small bream and artificial river feed. When feeding small fish, artificial feed should be fed in a shape similar to the fish's taste. Powdered feed should be fed in a proportionate manner and then formed into pellets or blocks.
7.5.3 Quantity
The feeding rate is affected by water temperature, fish size, and fish size. There are also large differences among species. According to one theory, the monthly feeding rate is 2%~4% of the total weight of the net in winter and 4%-10% of the total weight of the net fish in summer and autumn. 7.5.4 Feeding frequency and time
In autumn, the water temperature is high, and the feeding and metabolism of fish are strong. It should be fed once a day, at 5 am and 5 pm respectively. In winter, the water temperature is lower, so it should be fed once a day. The water temperature is slow at noon or in the afternoon. When the alarm is slow and continuous, it is about 20 times. 7.5.5 Interval casting method
When the fish are in good condition, cast less slowly to attract fish to come up and feed. When the fish gradually move to the upper layer to compete for food, cast more quickly. When some fish have already vomited, the speed limit and the amount of casting should be reduced. 7,6 Daily management
7.6.1 Observe the change of the color group's dangerous situation at any time, check the net box frequently, and prevent the net from being damaged and causing the fish to escape. 7.6.2 When there is no flood or typhoon, pay attention to emergency measures, release the cable, increase the force, transfer the fish raft, etc. 7.6.3 Change the box in time according to the growth of the fish, and release the fish according to the size of the fish. 7.6.4 Remove all kinds of dirt and rinse frequently. As the fish grow, replace the net with the appropriate size (size) when it is dirty. 7.6.5 Daily weather, water temperature, wind and waves, salinity and other conditions should be measured, and the results of the tests should be recorded. The growth of fish should be observed regularly. Generally, 30 to 50 fish should be randomly selected every half month to a month to measure their body length and size, and the types and software of the fish should be adjusted accordingly.
8 Disease prevention and control
8.1 General principles
Prevention is the most important thing, and treatment is the most important thing.
B.2 Disease prevention
Daily.2.1 Care should be taken to prevent blood loss during breeding, transportation, and boxing. 8.2.2
The feed should be of good quality, fed regularly, and in appropriate amounts to avoid excessive residues. Depending on the season, the fish should be regularly rinsed with fresh water to kill the fish. Each rinse should last for 10 minutes to 1 second.8.2.3
During the dissolution period, the fish should be treated with drugs.
Foreign eggs should be used for seedling transplantation,
sick fish and dead fish should be removed in time and concentrated on land for treatment. In case of high temperature, typhoon, rain and drought, additional preventive measures should be taken. The commonly used preventive drugs, concentrations and treatments should refer to the provisions of NY5371. 8.3 Treatment of fish diseases
The treatment methods should be appropriate. Feed the fish with drugs or filter the fish with drugs. 8.3.1
The commonly used preventive drugs and the methods of using them with caution should follow the provisions of NY5371. 8.3.2
Out-of-box acceptance
See the hazards of Chapter 7 of SC/T101H-1995
SC/1:2013-2003
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