How Much Is Crisp Grass Carp per Jin in 2020 and Analysis of Farming Techniques and Prospects
Crisp grass carp originates from the Changjiang Reservoir in Zhongshan City, Guangdong Province, and is one of the geographical indications of Zhongshan City. It is named for its firm, refreshing, and crisp flesh. So how much is crisp grass carp per jin in 2020? What are the farming techniques? How are the prospects?
1. How much is crisp grass carp per jin in 2020
The price of crisp grass carp in Zhongshan City, Guangdong is 9 yuan/jin, and the price of crisp grass carp fry in Zengcheng District, Guangzhou City is 0.62 yuan/fish. The above are all reference prices; the specific price shall be subject to the local price.
2. Crisp Grass Carp Farming Techniques
1. Pond Selection and Requirements
For ponds mainly farming crisp grass carp, it is best that the silt depth does not exceed 20 cm, the water source is sufficient, and the pond water depth is maintained at more than 2 m, with 1 unit of 3 kW aerator equipped for every 5 mu of pond. The pond water is required to be fresh with sufficient dissolved oxygen (a dissolved oxygen content of no less than 5 mg/L is preferable); it is best to use reservoir, mineral spring, or mountain stream water, and fresh river water may also be used.
2. Fry Stocking
When farming crisp grass carp, the fry must be uniform in size and robust in constitution. If conditions permit, it is best to cultivate the fry yourself, or choose grass carp from healthy farms that are free of disease and drug residues, with a size of about 1.5 kg/fish. The size of other polycultured fish species, especially feeding fish species such as carp, must not be larger than that of the crisp grass carp.
3. Species Combination and Stocking Density
In ponds mainly farming crisp grass carp, the fry stocking amount should be controlled at about 70% of the total fish stocking amount. For ponds with relatively good conditions, about 300 to 400 grass carp of about 1.5 kg/fish can be stocked per mu of water surface, together with about 60 silver carp and 20 bighead carp of about 1 kg/fish, and about 10 carp of about 0.5 kg/fish (or 20 to 40 crucian carp of about 100 g/fish), so as to purify the water body and make full use of the water space and food residues and obtain greater economic benefits.
4. Feed Combination and Feeding
When farming crisp grass carp, compound pellet feed and the like must not be fed; instead, raw grain mainly consisting of broad beans is fed, preferably high-quality northeast broad beans. The broad beans do not need to be crushed; they only need to be soaked in clean water for more than one day and night so that they are thoroughly soaked, swollen, and softened, which makes it easy for the grass carp to ingest and digest them. The feeding amount of broad beans should be flexibly controlled according to the weather, the feeding situation of the fish school, and the water quality, and it is best that they are finished before dusk each day. At the same time, some green grass or various aquatic plants should be fed as a supplement. In addition to barnyard grass, reed grass, tape grass, and pondweed, high-quality green feed such as artificially planted alfalfa, Sudan grass, and ryegrass can also be fed. In addition, various weeds as well as the stems and leaves of vegetables, beans, melons, and corn are all very good feed for farming crisp grass carp. Practice has proved that feeding broad beans combined with green feed has a very good effect. This combination can not only meet the nutritional needs of crisp grass carp for protein, vitamins, cellulose, and so on, but also save a large amount of labor, and at the same time is very beneficial for purifying water quality and preventing the occurrence of fish diseases.
5. Regular Disinfection
From April to September each year, disinfect the feeding ground once every half month, that is, after the fish have eaten, dissolve 500 g of bleaching powder in water and splash it around the feeding ground; the method of hanging bags or hanging baskets may also be used to place the medicine. Disinfect the pond water once every half month. Commonly used drugs and their dosages: bleaching powder 1 mg/L, copper sulfate and ferrous sulfate mixture 0.7 mg/L, trichlorfon 0.5 mg/L, quicklime 20 mg/L. The above various drugs should be used alternately to achieve a better effect.
3. Crisp Grass Carp Farming Prospects
Crisp grass carp is a famous and special aquatic product raised by using the mineral water of reservoirs, feeding fine feed, and applying the flowing water intensive farming method. Its protein content is 12% higher than that of ordinary grass carp, and its flesh becomes firm, refreshing, and crisp; at the same time, its flavor is also greatly changed, becoming much more delicious, with the fish belly part being the most outstanding. It can be called a premium product among fish and is deeply loved by consumers, and its market development prospects are generally favored by the industry.
Crisp grass carp has broad market demand, and the farming difficulty is not high. For farmers, it is a good project, and interested friends can try farming it.