The highlights of California salmon and hybrid striped maggot breeding: First, the biological characteristics: the biological characteristics of the California cricket California cricket is commonly known as the bigmouth bass, is a quality fish imported from the United States, has a solid meat, meaty fragrance, individual large, fast growing, Adaptability, less disease, easy to catch and so on. Calms in California range from 1°C to 36°C, and begin feeding at temperatures above 10°C. The optimum temperature for growth is 20°C to 20°C. Dissolved oxygen in water is required to be 1.5 mg/l or more; salinity is 10 or less. For carnivorous fish, prefer to eat small fish shrimp, aquatic insects and so on. Californian generals mature on two occasions. February to July each year is the spawning season and April is the most productive period. The suitable water temperature for breeding is 18°C ​​to 26°C, preferably 20°C to 24°C. Female broilers weighing 1 kilogram are spawning 40,000 to 100,000 grains; spawning several times a year, each producing 20,000 to 10,000 grains. Biological characteristics of the hybrid striped ticks Hybrid striped ticks are produced by the hybridization of striped ticks and white storks. The lateral stripes are similar to those of the striped ridges, but the stripes behind the pectoral fins and below the lateral line are interrupted; the back is grayish black, the abdomen is white, the larval body has spots on its side, and the adult has no spots. The hybridization stripe has strong adaptability, the suitable temperature range is 4°C to 33°C, the optimum growth range is 25°C to 27°C, the suitable salinity range is 0 to 25, and the suitable dissolved oxygen level is 6 mg/L to 12 mg/mL. Liter, up to 1 mg/l, suitable pH 7.0 to 8.5. Hybrid strips are carnivorous fish. Hybrid streaks are different from other hybrid fishes and they reproduce naturally. Breeding water temperature is 15 °C ~ 20 °C. Except for the age-specific maturation of individual male individuals, most individuals are sexually mature above the second age. The fertility of sexually mature females is 350,000 tablets/kg. At a water temperature of 18°C ​​to 20°C, fertilized eggs will take about 2 days to hatch. Second, pond culture technology: fish pond polyculture in stocking ponds of conventional cultured species, stocking a suitable amount of California or hybrid striped maggots, pond wild fish, small fish shrimp, aquatic insects, etc., generally 30 breeding per acre ~40 tails, when California harvests 15 kg to 20 kg. If there are many wild fish in the pond, the stocking amount of California or hybrid striped ticks can be appropriately increased. The pond has a main cultivated area of ​​about 1.5 mu, water depth of 1.5 meters or more, adequate water supply, good water quality, convenient irrigation and drainage, no water leakage, no pollution, ventilation and light transmission, and the bottom is loam, equipped with an aerator. Each mu of stocked California or hybrid striped trout seedlings 2000 to 2500, the good conditions Iridium can be put 3000 ~ 4000, appropriate polyculture pupa, cockroach, grass carp, etc., to remove feed residues, adjust water quality. The feed contains 45% to 50% of protein, and can be fed with salmon feed, or with low-value fish paste mixed with appropriate amount of bean cake, corn flour, etc. as feed. Feeding once a day in the morning and afternoon, when the water temperature is between 20°C and 25°C, the daily feed is 10% to 15% of the fish's body weight. Feeding amount should be appropriate, vitamins and minerals should be added to the feed to ensure nutritional requirements; timely grading and cultivating, stocking the fish of the same size in the same pool to avoid eating large fish. Koike intensive area of ​​50 ~ 100 square meters is appropriate, soil pool or concrete pool can be, but the ground is better with soil. It is also possible to use an unused rearing pond and other pools, requiring diagonal rows, irrigation outlets, adequate water sources, and good water quality. The stocking rate ranges from 30 to 40 per square meter. If the water source is abundant, there are also perfect oxygen aeration facilities, which can increase to 50 to 60 per square meter. The specifications of fish stocks in the same pool must be the same, and they cannot be polycultured.
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