Krill's raw shrimp, commonly known as crayfish or freshwater lobster, is a type of crustacean belonging to the decapod family. These creatures are characterized by their complex feeding habits, high reproductive capacity, wide environmental adaptability, and strong disease resistance. They thrive in various water bodies such as rivers, ditches, ponds, and farmlands. Their delicious meat and rich nutritional content—containing 16% to 20% protein—make them highly popular among consumers. Additionally, their shells are rich in calcium, phosphorus, and iron, making them valuable for producing feed additives, chitin, and other industrial materials used in agriculture, food, medicine, and more.
Due to their increasing demand, the crayfish market has experienced a shortage in recent years, leading to a steady rise in prices. This makes artificial breeding of crayfish a promising business opportunity. With their strong adaptability and low requirements for water quality and feed, they are easy to raise and have significant potential for large-scale farming. Below are the key techniques for successful crayfish cultivation:
1. **Pond Selection and Preparation**: It is recommended to choose a pond of 1-10 mu (approximately 0.67-6.7 acres) with a water depth of 1-1.5 meters. Ensure that the pond has effective escape prevention measures, clean water sources, and no pollution. One-third of the water surface should be covered with aquatic plants, and artificial shelters should be provided to mimic natural habitats.
2. **Disinfection and Fertilization**: Before stocking, disinfect the pond using 15-20 kg of tea cake or 100-150 kg of quicklime per acre. After cleaning, expose the pond to sunlight for several days, turn the sediment, and then re-expose it for about 10 days. Then, introduce fresh water through plastic nets to prevent wild fish from entering. In spring, apply 300-500 kg of decomposed manure per acre to cultivate plankton and benthic organisms for natural feeding.
3. **Stocking Seedlings**: Stocking should be done based on the availability of juvenile shrimp. Typically, from June to September, adult shrimp are selected as broodstock with a male-to-female ratio of 3:1. Alternatively, egg-carrying females can be directly stocked at 20-25 kg per acre. Juveniles (about 1-2 cm) are usually stocked between August and April, with 40,000–50,000 individuals per acre. Before stocking, shrimp must be acclimated to the pond’s temperature and disinfected using a 3% salt solution for 10 minutes, then gradually introduced into the water.
4. **Feeding and Water Management**: Feed once or twice daily when the water temperature is above 12°C. Morning and afternoon feedings typically include grain, cake meal, or commercial feed, with a daily amount of 3–5% of the total shrimp weight. Additionally, every week, add 150 kg of grass manure and 2–5 kg of animal-based feed per acre to support natural food sources. During summer, maintain water clarity at 35–40 cm and use aerators to prevent oxygen depletion.
5. **Disease Prevention**: Although crayfish are generally hardy, disease outbreaks can occur in intensive farming conditions. Regularly apply lime or chlorine-based disinfectants, and consider using micro-ecological agents to improve water quality and reduce disease risk.
6. **Harvesting**: Crayfish grow quickly, reaching 30 grams or more within 40–50 days. Harvesting should be based on market demand and shrimp size, typically starting in mid-May and continuing until late October. Use traps, cages, or dip nets to catch the shrimp, and selectively remove smaller ones to allow continued growth.
Hidden Safe,Office Code Safe,Bank Safe Deposit Box,Hotel Room Electronic Safe Box
Ningbo Reliance Security Technology CO.,Ltd , https://www.reliancesafes.com