Selection and cultivation of broodstock: The squid spawning is happy to flow, artificial breeding first choose 1 to 2 kilograms of health-free brooding brood fish pool, fed with wild fish or commercial feed, artificial oxytocin injection, injection of pituitary pituitary Or HCG, LRH--A and other hormones, let it natural ovulation. Squid eggs are slightly sticky and have a larger specific gravity than water and can easily sink to the bottom. Incubation in the loop should increase the flow rate, not less than 0.2 meters per second. After 3 to 4 days of fertilized eggs, fry can be hatched. Using artificial insemination can get more fry. It is also possible to fish natural fry farming.
It is advisable to use cement pools for seedling cultivation, and an area of ​​several tens of square meters is appropriate. Fresh water and micro-flows are required. In addition, small feed fry cultivation ponds (other fish that are basically in synchrony with the salmon during the breeding period) should be attached to ensure the supply of live feeds. Squid have a strong meat habit, lack of feed will eat each other, affect the survival rate. In the case of adequate feed, the fry can be reared for 10 to 15 days and can be bred into 3 cm species of summer fish. At this time can be transferred into adult fish farming.
One of the polyculture methods is polyculture in adult fish ponds, and the second is polyculture in broodstock ponds. In general, about 3 centimetres of carp species will be stocked in May, and 20 to 40 fish ponds will be placed in the wild fish. (The minimum size of the fish should be 1 times larger than that of the carp.) Tail; stocking tilapia, squid more adult fish ponds can be put more, 50 to 70 per mu; tilapia breeding too much pond, put about 100 per mu. Polyculture of squid ponds should not be used for stocking scorpions, oysters and other summer flowers. Because squid are fast, they will devour small-sized family fish. As the carp consumes more oxygen than the fish, the pond water of the polyculture carp should not be over-fat. It is necessary to inject new water within a certain period of time. Carp is sensitive to drugs, and the concentration should be calculated when applying drugs, and low doses or drug use should be stopped during the season when the water temperature is high. The adult fish ponds are set in adult fish ponds, and the natural wild fishes in the pond are mainly used as feed, and some tilapia broodstock breeding stocks can also be fed. The conditional ponds near the rivers and lakes can be filled with rivers and rivers, and wild fish can be used as food. Carp feeding 4 to 5 months, can grow to about 300 grams of product specifications, per mu can produce carp 5 to 8 kg.
Single-parent breeding. The area of ​​the pond is about 1 mu, and the depth of water is 1.5-2 meters. The water quality is required to be fresh, and the water must maintain micro flow. About 3 centimeters (about 3 centimeters) of Xiahua carp are placed on the mu, and depending on the amount of fish stocked, tilapia, wheat ear, shrimp, and other wild fish, or snails and quail meatballs, can be eaten. Feeding amount was fed from 3% to 5% of the total weight of the pond carp.
It is advisable to use cement pools for seedling cultivation, and an area of ​​several tens of square meters is appropriate. Fresh water and micro-flows are required. In addition, small feed fry cultivation ponds (other fish that are basically in synchrony with the salmon during the breeding period) should be attached to ensure the supply of live feeds. Squid have a strong meat habit, lack of feed will eat each other, affect the survival rate. In the case of adequate feed, the fry can be reared for 10 to 15 days and can be bred into 3 cm species of summer fish. At this time can be transferred into adult fish farming.
One of the polyculture methods is polyculture in adult fish ponds, and the second is polyculture in broodstock ponds. In general, about 3 centimetres of carp species will be stocked in May, and 20 to 40 fish ponds will be placed in the wild fish. (The minimum size of the fish should be 1 times larger than that of the carp.) Tail; stocking tilapia, squid more adult fish ponds can be put more, 50 to 70 per mu; tilapia breeding too much pond, put about 100 per mu. Polyculture of squid ponds should not be used for stocking scorpions, oysters and other summer flowers. Because squid are fast, they will devour small-sized family fish. As the carp consumes more oxygen than the fish, the pond water of the polyculture carp should not be over-fat. It is necessary to inject new water within a certain period of time. Carp is sensitive to drugs, and the concentration should be calculated when applying drugs, and low doses or drug use should be stopped during the season when the water temperature is high. The adult fish ponds are set in adult fish ponds, and the natural wild fishes in the pond are mainly used as feed, and some tilapia broodstock breeding stocks can also be fed. The conditional ponds near the rivers and lakes can be filled with rivers and rivers, and wild fish can be used as food. Carp feeding 4 to 5 months, can grow to about 300 grams of product specifications, per mu can produce carp 5 to 8 kg.
Single-parent breeding. The area of ​​the pond is about 1 mu, and the depth of water is 1.5-2 meters. The water quality is required to be fresh, and the water must maintain micro flow. About 3 centimeters (about 3 centimeters) of Xiahua carp are placed on the mu, and depending on the amount of fish stocked, tilapia, wheat ear, shrimp, and other wild fish, or snails and quail meatballs, can be eaten. Feeding amount was fed from 3% to 5% of the total weight of the pond carp.