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Gemstone cage culture
In 2001, the modern agricultural development center of Qingdao City, Shandong Province, introduced artificial bred gems and seeds from Australia and achieved success. Prof. Han Maosen from Ocean University of Yantai University recently introduced the growth situation of imported gems and oysters, and repeatedly emphasized that gems can be cultivated in the factory, and can also be cultured in reservoir cages, and also suitable for pond culture. It is based on the good traits such as cluster feeding, rapid growth, and strong disease resistance in the breeding process of gemstones. In some aspects, it is similar to the cage culture mode of tilapia and carp. The cage culture gems have the following requirements and advantages: 1. The reservoir has good water quality, high transparency, dissolved oxygen above 7.0 mg/l, pH around 7.0, and zooplankton such as Cladocera. 2. The gems and tilapia and tilapia cages are the same as those of the cage culture of C. sinensis, and their growth speed is fast. The average daily growth rate is 3.0 g. The activity space is superior and the feed is well resolved. 3. The gemstone has strong resistance to disease. After it was put into the box, it took precautionary measures based on prevention, such as hanging bags on time and splashing preventive drugs at the right time. So far no disease has appeared. 4. Feeding hard pellets at regular time, fixed point, and quantitative dose in the net culture, 4 times a day, 3 times a day below 25°C, and grasp the feeding amount of 80% full. 5. The use of net gems reduces costs and makes full use of the reservoir water temperature from June to early October. According to the conservative estimate of the current daily weight gain of 3.0 grams/tail to 4.0 grams/tail, the original 200 grams/tail in early October. Fish species can reach 500g / tail ~ 600g / tail product specifications. As a newly introduced food fish, gems and quails have excellent traits, such as beautiful appearance, delicate meat, less intermuscular puncture, fish meat coverage of 52% or more, protein content of more than 18.9%, and more than 8 kinds of amino acids beneficial to human body, amino acids The content reaches 61.56%. Needless to say, the success of cage culture and gems will have important implications for improving the industrial structure of China's freshwater aquaculture industry and adapting to the demand of domestic and foreign markets for high-quality fish products. Therefore, the aquaculture development of oystercatchers is the direction of the Chinese people. . The farmers who have experience in the cultivation of tilapia and their experience in the development of web-based breeding facilities are fully confident in using the original facilities to make a few changes and to maintain good gems. The technology is also very easy to accept and master. According to the current breeding progress, there will be another one to 1.5 years. With the maturation of gems and broodstocks, the problem of seed production will soon be solved. Once high-quality seed is produced, the cost of breeding will be greatly reduced, and the market for gems will develop rapidly. At present, the center has selected a certain number of big fish as a special pool to prepare for the production of seedlings. The introduction of gemstones reflects the strong desire of aquaculture to seek reform and development.