Giant crucian carp-Shenzhou Xianke giant crucian carp

Crucian carp is the most traditional high-quality fish favored by consumers, and its output accounts for more than 15% of the output of conventional farmed fish. it has achieved remarkable economic and social benefits in promoting the development of aquaculture. It can be said that the crucian carp market is an eternal market. In recent years, China's crucian carp has also been exported to Japan and South Korea, which is far from meeting the domestic and foreign market demand, especially the export commodity crucian carp of about 0.75 kg.

"Xianke Giant Crucian Carp" is the latest crucian carp breeding which has been studied by fish breeding experts for several years and successfully selected by the combination of traditional breeding techniques and modern biological techniques. The fish has good body shape, body color and meat taste, strong disease resistance, wide diet, cold and hypoxia tolerance, long-distance transportation, unable to breed and fast growth. The biological characteristics and culture of Crucian carp are briefly described as follows.

1 biological characteristics

"Xianke Giant Crucian Carp" lives in the upper, middle and lower layers of the water body, has the habit of living in groups, is gentle and suitable for high-density breeding. The living water temperature is 0: 38 ℃, the feeding water temperature is 10: 35 ℃, the growth water temperature is 15: 32 ℃, the pH value is 5: 8.5, the optimum pH value is 7: 7.5, and the salinity is 0 ‰ ~ 7 ‰. In general, the amount of dissolved oxygen in pond culture should be kept above 4 mg / L, even if the dissolved oxygen in the pond water is reduced to 1 mg / L, the floating head will not die. The critical point of dissolved oxygen is less than 0.25 mg / L, which causes death only when the dissolved oxygen in water is less than 0.1 mg / L.

The feeding habit of the fish is omnivorous fish mainly based on plant feed and has strong adaptability to bait. The juvenile fish mainly feed on zooplankton, and when the body length is more than 6 cm, they begin to switch to plant feed while eating both organic detritus and commercial feed, and high-yield adult fish are fed with hard pellet or expanded pellet feed with a crude protein content of 28% to 34%.

"Xianke Giant Crucian Carp" grows very fast, with the largest individual reaching more than 6 kilograms. It can generally grow to 0.6 kilograms and 1.5 kilograms from half a year to one year.

2 commercial fish culture

"Xianke giant crucian carp" is not only suitable for pond, lake purse seine, river and lake reservoir cage high-density culture, but also suitable for mixed culture with pond fish culture. The pond mainly raised "Xianke Giant Crucian Carp" with 1500000 fry of more than 3 cm per mu and fed full-price hard pellet or expanded pellet feed for 5 to 6 months, the individual generally reached about 0.75 kg and the yield per mu reached 1000-1500 kg. Two crops are raised annually in the south, the annual yield per mu can reach 2000 to 2500 kg, the feed coefficient is about 1.5, and the annual profit per mu is as high as more than 10,000 yuan. There are 150 million crucian carp mixed with 3 cm in the main fish culture pond, which can increase the income of crucian carp by 200 kilograms per mu, and 200 crucian carp with more than 3 centimeters in the main eel culture, and the income of crucian carp can be increased by 120 kilograms per mu. Cage culture "Xianke giant crucian carp" generally released more than 50 grams of fish per square meter 150 million 200 fish, breeding for 4 months, each cubic meter can receive more than 200 kilograms of crucian carp.

The economic benefit of "Xianke Giant Crucian Carp" culture is remarkable, the commodity value has been recognized by the market and consumers, and the product demand is huge, so the breeding prospect of "Xianke Giant Crucian Carp" is bright. At present, it is the best popularized breeding variety for getting rich by science and technology in freshwater and coastal low-salt waters.