Shi Rui 1# Bioengineering Green Shrimp (“Shirui 1â€) is a freshwater fishery research center of the Chinese Academy of Fishery Sciences. It is cultivated through interspecific hybridization techniques, backcrossing and molecular biology-assisted breeding. The new shrimp line was put into production for the first time in China. At present, a certain number of F2 generation parents have been stocked, and at the same time, through pilot tests, the foundation has been laid for large-scale seedlings. In 2004, demonstration breeding and small-scale promotion will begin.
First, the morphological characteristics "Shirui 1" is obtained through the interspecific hybridization of shrimp and Macrobrachium hainan F1 generation, F1 generation and then back to the Taihu Lake Qinghai shrimp breeding. The F1 generation has both the morphological characteristics of the shrimp and the Macrobrachium hainanensis, but the backcross of the shrimp with the shrimp is basically the same as that of the shrimp.
Second, economic traits
1. Growth rate: Under the same culture conditions, the growth rate of the shrimp was increased by more than 10% compared with that of the unmodified shrimp.
2. Commodity rate: Under the same culture conditions, the commodity rate of unripe shrimp increased by more than 10%.
3. The resilience, disease resistance and survival rate have all improved significantly.
4. Sexual maturity is delayed.
Third, aquaculture technology points pond conditions: area of ​​2-10 acres; dissolved oxygen 5 mg / liter or more; pH value of 7.2-7.8; transparency to 25-50 cm is appropriate. Shrimp pond must be strictly clear pond, thoroughly remove carnivorous fish and wild fish. After clear ponds, plants must be planted in ponds, and the area of ​​aquatic plants accounts for 25%-30% of the total area.
It is appropriate to stock 40,000 to 60,000 per acre, which is generally 50,000 per mu. Early breeding, change the water once every 5-7 days, change the water in the middle and late 10-15 days, change the water every time 1/4-1/2.
High-quality, full-price, fresh shrimp feed is the main food. Others are the same as shrimp culture.
Fourth, there are problems
1. The number of parents is limited. In 2004, only a small-scale demonstration of farming was needed. It was necessary to expand the population by one to two generations before it could be widely promoted.
2. The high-quality full-price pelleted feed on the market can basically meet the nutritional needs of “Shirui 1â€, but it cannot fully utilize its advantages. At present, it is preparing to produce special feeds for "Shi Rui No. 1".
3. It is also necessary to continuously summarize the biological characteristics of "Shirui 1" during the breeding process so as to perfect the breeding technology of "Shirui 1".
V. Prospects The Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences will use its own scientific research strengths to further improve the genetic traits of “Shirui 1†on the basis of the existing research, and introduce the “Sriru No. 2 and 3†with better traits. No.†continuously provides improved varieties for the shrimp aquaculture industry and promotes the healthy, stable and sustainable development of China’s shrimp aquaculture industry.
First, the morphological characteristics "Shirui 1" is obtained through the interspecific hybridization of shrimp and Macrobrachium hainan F1 generation, F1 generation and then back to the Taihu Lake Qinghai shrimp breeding. The F1 generation has both the morphological characteristics of the shrimp and the Macrobrachium hainanensis, but the backcross of the shrimp with the shrimp is basically the same as that of the shrimp.
Second, economic traits
1. Growth rate: Under the same culture conditions, the growth rate of the shrimp was increased by more than 10% compared with that of the unmodified shrimp.
2. Commodity rate: Under the same culture conditions, the commodity rate of unripe shrimp increased by more than 10%.
3. The resilience, disease resistance and survival rate have all improved significantly.
4. Sexual maturity is delayed.
Third, aquaculture technology points pond conditions: area of ​​2-10 acres; dissolved oxygen 5 mg / liter or more; pH value of 7.2-7.8; transparency to 25-50 cm is appropriate. Shrimp pond must be strictly clear pond, thoroughly remove carnivorous fish and wild fish. After clear ponds, plants must be planted in ponds, and the area of ​​aquatic plants accounts for 25%-30% of the total area.
It is appropriate to stock 40,000 to 60,000 per acre, which is generally 50,000 per mu. Early breeding, change the water once every 5-7 days, change the water in the middle and late 10-15 days, change the water every time 1/4-1/2.
High-quality, full-price, fresh shrimp feed is the main food. Others are the same as shrimp culture.
Fourth, there are problems
1. The number of parents is limited. In 2004, only a small-scale demonstration of farming was needed. It was necessary to expand the population by one to two generations before it could be widely promoted.
2. The high-quality full-price pelleted feed on the market can basically meet the nutritional needs of “Shirui 1â€, but it cannot fully utilize its advantages. At present, it is preparing to produce special feeds for "Shi Rui No. 1".
3. It is also necessary to continuously summarize the biological characteristics of "Shirui 1" during the breeding process so as to perfect the breeding technology of "Shirui 1".
V. Prospects The Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences will use its own scientific research strengths to further improve the genetic traits of “Shirui 1†on the basis of the existing research, and introduce the “Sriru No. 2 and 3†with better traits. No.†continuously provides improved varieties for the shrimp aquaculture industry and promotes the healthy, stable and sustainable development of China’s shrimp aquaculture industry.
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