Cultivation of two ways:
1, earthen pond cultivation
The pond area is generally about 1 acre, the water depth of 2 meters, each acre stocked with about 10,000 tails of 3 cm Siniperca chuatsi summer flowers.
(1) feeding cultivation method: that is, according to the daily intake of Mandarin fish (or daily intake of tails) to feed bait fish. This cultivation method of summer flower Mandarin fish density can be larger, generally mu put 12,000 tails. Before stocking, the pond should be disinfected with quicklime, and the water intake should be set up with filtering mesh to prevent the entry of ferocious fish. Siniperca chuatsi summer flower just under the pond, the water level is shallow, to 60 cm is good, later with the increase of individuals, the water level gradually increased to about 1.5 meters. When feeding bait fish, it should be timed and positioned. During the period of 3-6 cm of Siniperca chuatsi fry, the daily feeding of bait fish is calculated at 4-8 tails per Siniperca chuatsi, and the length of bait fish does not exceed 55-60% of the length of Siniperca chuatsi; after 6 cm, the daily feeding of bait fish is 4-5 tails, and the length of its body does not exceed 50-55% of the length of Siniperca chuatsi. After 7 days in the pond, splash the whole pond once with 0.7PPM copper sulfate and ferrous sulfate combination (5:2), mainly to prevent and control the rotifers and oblique tube disease.
(2)Cultivation method: Cultivate palatable bait fish before stocking Siniperca chuatsi summer flowers, and then stock Siniperca chuatsi fry, so that Siniperca chuatsi and bait fish grow in the same pond. Generally, 0.8-10,000 Mandarin fish of 3cm are stocked per mu, and the stocking quantity of bait fish is about 700,000 per mu, and the length of bait fish is strictly controlled to be no more than 55-60% of that of Siniperca chuatsi. This cultivation method should pay attention to water quality management, 60 cm water level at the early stage of stocking, water injection every 3 days after stocking, each time the amount of water injection is about 25 cm. Finally, the pool water should be maintained at 1.5-1.8 meters. Disease control as above.
2, net box cultivation
Net box area of 2-6 square meters, its length, width and height of the dimensions of 2 m × 1 m × 1 m or 2 m × 2 m × 1 m or 3 m × 2 m × 1 m, with bamboo, wood fixed in the water quality of the pond or the outside of the swings, the open mouth, the mouth of the net box above the water surface 20-30 cm. Net box material selection of 40 purpose nylon mesh, stocking density is generally 400-800 tails per square meter, after 7-15 days to cultivate into 6-8 cm of large-size Mandarin fish species. In the management of cultivation, it is necessary to do frequent washing and changing of boxes to keep the water quality in the box fresh and the dissolved oxygen sufficient. The method and quantity of feeding bait fish are the same as that of soil pond cultivation. Disease prevention can be used 3PPM copper sulfate or 3% salt water dipping, before 4.5cm every 2 days dipping once, more than 4.6cm every 3 days dipping once.
Whether cultivating Siniperca chuatsi fish species in earthen ponds or net boxes, the following issues should be noted: (1) The summer flowers of Siniperca chuatsi fish around 3cm stocked should be soaked in 3PPM copper sulfate or 3% saline water for 5-10 minutes. (2) Oxygenation equipment should be provided during the cultivation process, and oxygen should be increased immediately when floating heads are found. (3)In the morning and afternoon of each day, check the feeding and growth of Mandarin fish species and the elimination of bait fish regularly, replenish the number of bait fish and adjust their specifications at any time.
Third, adult culture technology
Chiniperca chuatsi adult culture is to raise 3 cm Mandarin fish fry or 6-8 cm fish species into commercial fish weighing about 500 g. This process takes about 180 days. This process takes about 180 days. The length of rearing time depends on whether the bait fish are sufficient and palatable, whether the water quality is good and whether the management is proper. At present, the main ways of breeding are ponds, adult fish ponds (small reservoirs), mixed culture, net box culture, etc. 1, ponds, Mandarin fish
(1) pond conditions: the requirements of the bottom of the pond is hard, less silt, close to the source of water, drainage and irrigation is convenient, there is no sewage inflow of domestic and industrial sewage, there is no equipped with bait fish pond should not be too large in size, generally 1-3 acres. Under the condition of equipped with bait fish ponds, the area of 2-5 acres is appropriate. Before stocking, the ponds should be cleared and disinfected by conventional methods to kill various disease organisms and pathogens. After water injection, 1-2 days before Mandarin fish fry are stocked in the pond, splash the whole pond with 0.7PPM copper sulfate and ferrous sulfate combination (5:2) once to kill water parasites, so as to improve the survival rate of Mandarin fish (especially summer flowers).
(2) Disinfection of fish species and bait fish: stocked Mandarin fish species and hitchhiking varieties of temporary containers, with 3PPM of copper sulfate solution or 3% saline or 20PPM of potassium permanganate solution immersion for 5-10 minutes, regular feeding of bait fish are also disinfected with this method, to prevent the pathogens from the stocking of fish species and bait fish to be brought into the breeding pond.
(3) Stocking methods: The following three stocking methods are commonly used at present:
①Direct stocking of 3cm Mandarin fish species. To local Siniperca chuatsi summer flower breeding one year into commercial fish, Guangdong Siniperca chuatsi summer flower can be listed that year. Stocking density of about 2000 per mu, pre-cultivation methods with the soil pool cultivation of Mandarin fish species, later feeding bait fish-based. This method is easy to work, saving labor and ponds, but due to the small size of the fish stocking, the survival rate is generally only 50%, poor grasp.
②Stocking of 6-8cm large-size Mandarin fish species. This method is adapted to the breeding of larger farmers, generally mu put 1000-1200 tails. The advantage is that the survival rate is higher, usually 85-90%, and the production is more certain.
③ Stocking of one-year-old Mandarin fish species, specifications 50-100 g / tail, stocking about 500 per mu, stocking specifications require basic consistency, mu ride about 200 tails of flowers, chub, about 200 tails of the old mouth of the silver crucian carp, it is not appropriate to ride grass carp, cyprinid, carp, etc., the use of the winter to acquire a small species of fish stocking temporarily in the pond.
(4) feeding method: feeding Mandarin fish feed fish sources of captive and wild fish collection, the requirements of the bait fish a live, the second to the size of the mouth, the third is no hard spines, and the fourth supply in time, to try to meet the above requirements in order to achieve good results.
①Feed fish species, all small fish and shrimp without hard spines and small loaches, can be used as bait fish for Mandarin fish, but from the source, economic, preferred food and other considerations, you should choose pangolin, crucian carp, silver carp, bream fry better.
②Feed fish specifications, should be based on the different growth stages of Mandarin fish, feeding the appropriate bait fish.