Artificial breeding and adult fish rearing of white crucian carp

1.Brother fish breeding selection2 age ~ 3 age, weight7 days to 10 days before releasing fish, use 60kg to 75kg of quicklime per 667 square meters to disinfect the dry pond; before releasing fish 1 time every day in the morning and afternoon. The feeding amount is 3%~5% of the fish's body weight, and it should be eaten within 2 hours after feeding. 2.The spawning, hatching and spawning pools can range from tens of square meters to 1000 square meters, depending on the scale of production, and the water depth is 20℃, move the broodstock into the spawning pool, add water until the fish's dorsal fin is just visible, and allow the fish to swim close to the bottom and bask on its back for 2 to 4 hours before filling with water to promote spawning. The pond should be disinfected 7 days to 10 days before the fish eggs are released into the pond. The method is the same as the disinfection method of the broodstock pond. 3.Fry fry are cultivated and the basal fertilizer is applied 1 day before the fry emerge, and human and livestock manure is applied every 667 square meters1 to 2 times a day. Topdress 1 times every 1 day to 2 days, and apply 50 kilograms of human and animal manure water every 667 square meters ~2. Adult fish feeding
Practice has proved that under general mixed feed feeding conditions, the tail weight of every 667 square meter in late winter and early spring can be 10 grams to 15 grams. If the quality of the feed is improved ( the protein content reaches 20% or more ), not only the tail weight can grow to more than 200 grams, but the yield can also reach about 400 kilograms. In order to give full play to the production potential of the water area, a small amount of silver carp, bighead carp, and carp should be mixed, but the total output of these fish should not exceed 15%~20% of the total output of the fish pond. 4.In summer and autumn, we should take turns to catch some individuals with a tail weight of 100 grams or more for sale