This standard specifies the environmental conditions, artificial propagation, juvenile shrimp cultivation, edible shrimp rearing techniques and disease control techniques for pollution-free aquaculture of Macrobrachium rosenbergii di Man. This standard applies to pollution-free aquaculture of Macrobrachium rosenbergii. NY/T 5159-2002 Technical Specification for Aquaculture of Pollution-Free Food Macrobrachium rosenbergii NY/T5159-2002 Standard download decompression password: www.bzxz.net

ICS65-150
Agricultural Industry Standard of the People's Republic of China
NY/T5159-2002
Pollution-free Food
Published on 2002-07-25
Technical Specification for Farming Macrobrachium rosenbergii
Implemented on 2002-09-01
Published by the Ministry of Agriculture of the People's Republic of China
Agricultural Industry Standard of the People's Republic of China
Pollution-free Food Technical Specification for Farming Macrobrachium rosenbergii NY/T5159—2002
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First edition August 2002
First printing August 2002
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This standard was proposed by the Ministry of Agriculture of the People's Republic of China. Foreword
This standard is under the jurisdiction of the National Technical Committee for Aquatic Products Standardization. The drafting unit of this standard is Zhujiang Fisheries Research Institute, Chinese Academy of Fishery Sciences. The main drafters of this standard are Wu Ruiquan, Huang Zhanghan, Lu Maixin and Lu Xiaotiao. NY/T5159—2002
1 Scope
Technical Specifications for the Culture of Macrobrachium rosenbergii
Pollution-free Food
NY/T 5159—2002
This standard specifies the environmental conditions, artificial propagation, juvenile shrimp cultivation, edible shrimp rearing techniques and disease control techniques for the pollution-free culture of Macrobrachium rosenbergii (Macrobrachium rosenbergii Man). This standard applies to the pollution-free culture of Macrobrachium rosenbergii. 2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. Fishery water quality standards
GB11607
GB/T 11777
GB/T 11778
GB13078
NY5051
NY5071
NY5072
Quality standards for silver carp fry and fingerlings
Quality standards for fish fry and fingerlings
Feed hygiene standards
Pollution-free foodWater quality for freshwater aquaculture
Guidelines for the use of fishery drugs
Pollution-free food
Pollution-free foodSafety limits of fishery compound feedSC/T1008—1994Technical specifications for conventional pond culture of fish fry and fingerlingsSC/ T1033.1-1999 Technical Specifications for Macrobrachium rosenbergii Culture Broodstock SC/T1033.2—1999
SC/T1033.3—1999
SC/T1033.4--1999
3 Environmental Conditions
3.1 Site Selection
Technical Specifications for Macrobrachium rosenbergii Culture Artificial Propagation Technology Technical Specifications for Macrobrachium rosenbergii Culture Technology for Juvenile Shrimp Rearing Technology for Edible Shrimp
Technical Specifications for Macrobrachium rosenbergii Culture
Sufficient water source, convenient water inlet and outlet, convenient transportation, and normal power supply. 3.2 Water Source, Water Quality
The water quality of the water source should comply with the provisions of GB11607, of which the dissolved oxygen should be above 4mg/L?PH value 7.0~8.5: The aquaculture water quality should comply with the provisions of NY5051.
4 Artificial propagation
4.1 Source of broodstock
The source of broodstock and the quality of broodstock shall comply with the provisions of SC/T1033.1. 4.2 Cultivation of broodstock
4.2.1 Cultivation pond
Should comply with the provisions of SC/T1033.1.
4.2.2 Disinfection of cultivation pond
NY/T5159—2002
Before stocking broodstock, the cultivation pond needs to be routinely disinfected. For cement ponds, bleaching powder with a concentration of 10×10-6 is used, and for earth ponds, quicklime with a concentration of 100×10-* is used. The broodstock can be stocked only after the drug properties disappear after 5d~7d. 4.2.3 Stocking density
The weight of the stocked broodstock is 20g/tail~30g/tail, and the stocking density is generally 0.5kg/m~0.75kg/m. 4.2.4 Male-female pairing
The male-female pairing ratio is 2.0～3.5:1.
4.2.5 Feeding and management
It shall be carried out in accordance with the provisions of SC/T1033.2. The water temperature of the earthen pond shall be controlled at 20℃～21℃, and the water temperature of the cement pond shall be controlled at 22℃～23℃. 4.2.6 Spawning and hatching
It shall be carried out in accordance with the provisions of SC/T1033.2.
4.3 Larvae cultivation
4.3.1 Cultivation pond
It shall comply with the provisions of SC/T1033.2.
4.3.2 Cultivation water
It shall comply with the provisions of SC/T1033.2.
4.3.3 Cultivation density
It shall comply with the provisions of SC/T1033.2.
4.3.4 Cultivation Management
4.3.4.1 Water Quality Management
Pond water temperature is controlled between 28C~31C: salinity is controlled between 12~20; pH value is 7.08.5: continuous aeration and oxygenation during seedling cultivation to keep the dissolved oxygen content of the pond water above 5mg/L; sewage is sucked 1~2 times a day, and new water is added after each sewage suction; the daily water change volume is more than one-third of the original pond water volume; when changing or adding water, the salinity remains stable and the water temperature change should not exceed 2℃. 4.3.4.2 Feeding
In the early stage, Artemia nauplii are generally fed. The daily feeding amount and feeding frequency are determined according to the Artemia density in the pond water. The Artemia density in the pond water should be kept between 1/mL and 5/mL. After the larvae develop to the 6th stage, cooked fish and egg products can be added and fed between two feedings of Artemia. The Artemia worms fed should be cleaned with clean water. 4.3.4.3 Disease Control
Before stocking, the cultivation pond should be disinfected by spraying the walls and bottom of the pond with 10×10- concentration of trichloroisocyanuric acid or 20×10-" concentration of bleaching powder: the water used for seedling cultivation should be treated by sedimentation and disinfected with 0.3×10-\ concentration of trichloroisocyanuric acid, and filtered with a sieve with a pore size of less than 0.1mm when entering the water. Diseased shrimp seedlings should be removed in time, and the right medicine should be prescribed according to the type of pathogen. The use of medicine should comply with the provisions of NY5071. 4.3.4.4 Shrimp seedling desalination
When more than 90% of the zoeae have metamorphosed into shrimp larvae After that, desalination can be carried out. Desalination operation shall comply with the provisions of SC/T1033.2. After desalination, the shrimp seedlings can directly enter the edible shrimp breeding stage, or they can be first cultivated into juvenile shrimps of about 3.0 cm, and then enter the edible shrimp breeding stage. 5 Juvenile shrimp breeding
5.1 Cultivation conditions
Should comply with the provisions of SC/T1033.3.
5.2 Stocking density
Should comply with the provisions of SC/T1033.3.
5.3 Feeding management
5.3.1 Water quality management
Continuous Continue to aerate and oxygenate the water to keep the dissolved oxygen content above 4mg/L. Change the water from time to time to prevent the water quality from deteriorating.
NY/T5159—2002
5.3.2 Feed
Suitable feeds for feeding at this stage include fish paste, fish meal, egg products and juvenile shrimp compound feed. The daily feeding amount is 8%~15% of the shrimp body weight, and it is fed three times in the morning, noon and evening according to the ratio of 3:3:4. 5.3.3 Disease prevention and control
Before stocking, the pond needs to be thoroughly cleaned and medicated according to 4.2.2 Disinfection of food; water for seedling cultivation needs to be treated with sedimentation, and filtered with a sieve with a pore size of less than 0.2mm; during the cultivation period, 1×10-6 bleaching powder or 0.3×10-6 trichloroisocyanuric acid is used to disinfect the pond water regularly; shrimp seedlings are regularly inspected under a microscope, and once diseases are found, the appropriate medicine is used in time, and the use of medicine must comply with the provisions of NY5071. 5.4 Juvenile shrimp out of the pondbZxz.net
The juvenile shrimp with a body length of about 0.7cm is cultivated for about 30 days to reach a body length of about 3.0Ocm, and then it is transferred to the stage of edible shrimp breeding.
6 Edible shrimp breeding
6.1 Pond conditions
The pond bottom is flat, with little silt, the slope of the pond embankment is 12, the water depth is 1.5m~2.0m, and it meets the requirements of SC/T1033.4. 6.2 Pond cleaning and disinfection
For ponds that have been dried and sun-dried, inject 50cm~70cm of new water 10d~15d before stocking shrimp fry. Use 1875kg~2250kg of quicklime and 150kg of bleaching powder mixed with water and poured with wine for each pond, or use 150kg of bleaching powder for each pond, and then use 750kg~900kg of tea bran mixed with water and poured over the whole pond every 2d, and then use 1500kg of quicklime to adjust the water quality. After 7d10d, test the water with a small amount of shrimp fry to confirm that the toxicity has disappeared before stocking shrimp fry.
6.3 Stocking of seedlings
6.3.1 Stocking of shrimp seedlings
Stock 3.0×10″ to 6.0×105 desalinated shrimp seedlings with a body length of about 0.7cm per hectare, or 2.25×105 to 4.5×105 young shrimps with a body length of about 3cm.
6.3.2 Polyculture of fish
25 days after the shrimp seedlings are stocked, stock 1000 to 1500 fish or silver carp weighing 100g/tail to 200g/tail per hectare. The silver carp and fish stocked should comply with GB/T11777 and GB/T 11778. 6.4 Mechanical equipment
Shrimp ponds should be equipped with water pumps and aerators. For every 1.3hm2~2.7hm° pond, a 3kW water pump is configured to add water; for every 0.2hm2~0.35hm° pond, a 1.5kW aerator is configured. Standby power generation equipment is configured based on 70% of the total mechanical power load to prepare for power outage emergency use.
6.5 Feeding management
6.5.1 Fertilization
After cleaning and disinfecting the pond, apply fully fermented and disinfected organic fertilizer as base fertilizer. After stocking the shrimp fry, depending on the water quality, Chemical conditions. Timely supplement organic fertilizer or inorganic chemical fertilizer, the application amount and method of fertilizer shall refer to the provisions of SC/T1008. Chemical fertilizers that have not been registered by the national or provincial agricultural departments shall not be used.
6.5.2 Feeding
Generally, compound feed with a protein content of more than 32% is fed, and other plant and animal feeds can also be fed. The feed fed should comply with the provisions of GB13078 and NY5072. The daily feeding amount and feeding method shall be in accordance with the provisions of SC/T1033.4. 6.5.3 Water quality management
As the shrimp grows , it is advisable to gradually deepen the pond water level. Increase by 5cm~10cm each time, and reach the highest water level specified in 6.1 of this standard during the high temperature season (June to July). During the breeding period, replace new water or start the aerator in time according to the water quality conditions. In the late growth period, the aerator is generally turned on at noon and in the evening every day, for 2h~3h at noon and 4h~6h at night to ensure that the dissolved oxygen content in the pond water is above 4mg/. Use quicklime to adjust the water quality every 20 days or so, with a concentration of 8×10-6~10×10-6, the pH is maintained between 7.0 and 8.5, and the transparency is maintained at 30NY/T 5159—-2002
cm.
6.5.4 Growth inspection
Sampling (more than 50 shrimps) every 7-10 days to check the growth and feeding of shrimps, measure the length and weight of shrimps, and use this as the basis for adjusting the feeding amount.
6.6 Disease prevention and control
Shrimp disease prevention and control should implement the principle of "prevention first, prevention is more important than treatment". Preventive measures include: regular application of quicklime to keep the pond water in good quality; -Regularly disinfect the pond water with bleaching powder or trichloroisocyanuric acid; -Feed feed that meets quality standards and add polysaccharide immune enhancers to the feed; -Persist in daily pond inspections to promptly remove harmful organisms in the pond. -Once shrimp diseases are found, timely symptomatic medication should be used. During the outbreak period, trichloroisocyanuric acid and quicklime can be sprayed on the whole pool every other day to make the pool water drug concentration reach 0.4×10-6 and 20×10- respectively. The use of drugs should comply with NY5071 regulations.
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Book number: 155066·2-14642
NY/T5159-2002
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