Key Breeding Techniques for Xiangyun Carp and Its Hybrid Variants
Xiangyun carp, scientifically known as *C. yunnanensis*, is a triploid fish developed through artificial hybridization between a tetraploid parent and a diploid carp. This species is highly valued for its delicious taste and rapid growth. In pond culture, it can reach a marketable size of 0.5 kg within 7 months, with the largest individuals growing up to 1.5 kg in two years. It has gained popularity in the market due to its strong disease resistance, tolerance to low oxygen and cold temperatures, fast growth rate, and ease of feed availability. Compared to its parents, it grows faster, has a higher survival rate, and is easier to transport without losing scales. Currently, it is being widely promoted across Guangdong and other provinces in China. In Zengcheng, Guangdong, farmers have established successful breeding practices. The first step involves preparing fry seed ponds of 3–5 acres with a depth of 1.5–2 meters. These ponds must be leak-proof and equipped with proper drainage and irrigation systems. Before stocking, the pond should be thoroughly cleaned by removing excess silt and disinfected using quicklime, tea bran, and bleaching powder to eliminate wild fish, pathogens, and parasites. Five to seven days before stocking, 500 kg of human and animal manure water is added to enrich the pond, turning the water into an oil-green color. Fry density depends on water quality and temperature, typically around 80,000 to 100,000 per acre. After one week, the fry begin feeding on plankton and are supplemented with artificial feed such as maize, wheat bran, soybean cake, and peanut meal. After 20–30 days of rearing, the fry grow to about 3 cm in length and need to be separated to reduce density, promote summer growth, and improve the size at harvest. Next, coarse breeding of Xiangyun carp involves raising larger fish for commercial sale or as broodstock. Seed ponds are usually 5–8 acres, with a depth of 1.5–2 meters. Before stocking, thorough disinfection is required. Fish with a tail length of over 3 cm (about 3,600–10,000 per acre) are stocked, along with 10% silver carp and 5% grass carp to help control algae. If there’s a poultry farm nearby, aerators and artificial feed can be used to raise fish to sizes of 5–8 cm, yielding 400 kg per acre. If not, mixing Xiangyun carp with other species is also possible, with 800–1000 fry per acre achieving a survival rate of over 90%. Cages can also be used for coarse breeding in large water bodies, ideally 2 meters deep. Small to medium-sized cages with mesh sizes matching the fish size are recommended. Each square meter can hold 600–800 fish. Feeding should follow the "Four Rules" — feeding four times daily. Disease prevention is crucial, and each square meter can produce 30–40 kg of fish. Using hot spring water for cultivation also yields good results. For adult fish farming, Xiangyun carp is often raised alongside other species, but it should not be mixed with tilapia, silver carp, or other similar species due to overlapping food habits, which may lead to competition and reduced growth. Stocking should be done early, with large-sized fry (5–8 cm) for wintering stock and 4–5 cm fry for summer stocking. Polyculture density ranges from 300–500 per mu, depending on water quality and pond depth. A main pond can be stocked with 2,000–3,000 fry per acre, along with 150 maggot fry and 80–100 frog fry to prevent eutrophication. Xiangyun carp can eat a variety of plant and animal feeds, including organic debris and phytoplankton, making it ideal for fertilized water culture. If no poultry farm is available, 200–300 kg of fermented organic fertilizer or 2.5 kg urea and 5 kg superphosphate can be applied every 10–15 days. Artificial compound feed with 33% or more protein is also recommended. Since Xiangyun carp has no true stomach and eats small amounts at a time, multiple feedings per day are essential. Feeding frequency varies: 4–6 times per day in April–June, 8 times in July–September, and 2–3 times in other months. During hot seasons, feeding amounts should be 5–8%, while in winter and spring, 2–3% is sufficient. Due to its tendency to escape during heavy rains, special precautions must be taken during summer and autumn. Finally, disease prevention is key. While Xiangyun carp is generally disease-resistant, it can still be affected by viral and bacterial diseases if other fish in the pond are infected. Maintaining clean water, regular water exchanges, and lime applications (20 kg per acre monthly) are essential. Bleach (1 ppm) and disinfectants like "Fish Bikang" and "Chenjie" can also be used to enhance fish immunity and promote growth. Unicom: Hunan Xiangyun Biotechnology Co., Ltd. Zhang Bing Tel: 0736-7301999 / 13973661742 QQ: [Not Provided]d ribose powder,bioenergy ribose powder,muscleform d ribose,supplements d ribose
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