How to Farm Crispy Grass Carp? A Detailed Explanation of the Key Farming Techniques
Farming crispy grass carp requires first raising fry, a process that takes about a year, and then starting the farming of ordinary grass carp. From the beginning of the third year, broad beans can be fed at temperatures above 25°C to make its texture crispy.
Crispy Grass Carp Farming Techniques
1. Farming Requirements
All use is made of Xijiang River water within the protection area, with salinity maintained at 0.3‰ to 0.4‰ year-round, and more than 200 days per year with water temperatures above 25°C.
2. Fingerling Requirements
Large-size fingerlings bred locally, with a stocking size of ≥2.0kg per fish.
3. Stocking Density
Stocking density <300 fish/667㎡ (mu).
4. Use and Requirements of Feed
Mainly feeding complete formula feed and high-quality broad beans, with a daily feeding amount of 3% to 5% of fish body weight. Supplement with an appropriate amount of green feed such as elephant grass. The ratio of concentrated feed to green feed is 7:3. After raising to more than three jin, feed broad beans for more than three months.
5. Daily Management
Keep the water depth of the farming pond at 2.5 m; keep the water transparency of the farming pond at 25 cm to 30 cm, and exchange water in appropriate amounts depending on water quality.
6. Harvesting
Market size ≥5.5kg per fish.
7. Environmental and Safety Requirements
The prevention and control of the rearing environment and epidemic diseases must comply with relevant national regulations, and the environment must not be polluted.
8. Quality Characteristics
1. Sensory characteristics: The backbone is relatively stiff, the flesh is firm, crisp and smooth, with a chewy texture, and the muscle fibers are not easily torn apart.
2. Physicochemical characteristics: Cut the fish flesh into thin slices of 2 mm to 3 mm, and boil in water for more than 30 minutes without breaking apart; the moisture of the dorsal muscle is ≤79.00%, fat ≥1.63%, calcium ≥0.47mg/g, glutamic acid ≥0.47mg/g.
3. Safety requirements: Product safety indicators must meet the relevant national regulations for products of the same kind.