Also known as Heilongjiang Liushao, Huai Tou and Huai Zi, Huai Tou is affiliated with the genus Diptera, Acipenseridae, and Eucalyptus. It is a real estate fish in Heilongjiang Province, rivers in the Songhua River, Wusuli River, and Nenjiang River, as well as some large lakes. It is adaptable to environment, capable of adapting to hypoxia, fast growing, easy to raise, and has a high rate of catching. The year of fry can develop commercial fish, and its breeding prospects are promising.
1, fry cultivation
1 Pond conditions and preparation
Choose an area of ​​1 to 5 acres is appropriate, the pool depth is more than 1.5m, the pool is free of weeds, the bottom of the pool is flat, non-leakage pond as a fry cultivation pool. 10 days before entering the pond, the fry is sterilized by the dry clear pond, with 75 to 100 kg of lime or 5 to 10 kg of bleaching powder per mu. After 2 days of disinfection, the water injection was 0.6 to 0.8m deep. Five to seven days before the fry enters the pond, 500 kg of chicken manure is fermented and fermented per mu, and zooplankton such as rotifers and cladocera are cultivated. When manure is applied, quicklime should be mixed in. To speed up the fermentation of chicken manure, chicken manure can be collected and sealed with plastic cloth.
2 fry stocking
Mussel stockings per mu 3 to 5
Million. Choose sunny, windless or breezy weather to put the seedlings. Before the fish are put into the pond, they are first put into cages and sieved to make them or trussed. The cage uses iron bars as a frame. First put the nylon bag or other container that holds the seedlings on the surface of the fish pond,
When the temperature of the water in the container is the same as the water temperature of the pool water, the fry is put into the cage or tie box. After fishing for 2 to 3 hours, the fry is fed and the fry is placed in the pool. Before laying the seedlings, arrange shading objects, such as water grass, straw curtains, palm husks, etc. in the shallow waters on the shore of the pond to provide concealed items for the fry, and the fish fry under the cover.
3 Feeding management
Three days before the fish enters the pond, the zooplankton cultured in the pond can feed on it without feed. If ponds have a small amount of zooplankton, they can be fed from other ponds. The fourth day can be fed with leeches and fish gills. Quanchiposa can be used. The amount of water fed is 5 to 10 kg per acre of water. According to the feeding conditions of the fry, the amount of feeding can be controlled flexibly.
4 fish out of the pool
After 7 to 10 days of cultivation, fry
When the total length reaches 3 to 5 cm, the pool should be separated in time to enter the next stage of rearing.
5 Fish Disease Prevention
The fry breeding stage is prone to bechaemic disease. There are two kinds of treatment methods: one is the mixture of copper sulfate and ferrous sulfate in Quan Quan, and 0.5 g of copper sulfate and 0.2 g of ferrous sulfate per cubic meter of water; It is a formal spill of formalin, with 100 g of formalin per cubic meter of water.
2. Adult fish breeding
The breeding of white-headed maggots can adopt three methods: water multiplication in medium and large scales, pond raising and pond raising.
1 Medium and large water surface proliferation
In lakes and reservoirs, small, low-value miscellaneous wild fish, such as common ear fish and squid fish, are abundant in resources. These small, low-value wild miscellaneous fish are a good feed for pregnant women. Through the stocking of fish heads, small, low-value wild fishes in lakes and reservoirs can be transformed into high-value head lice and raise the breeding efficiency. From late June to early July, 5 to 10 tails of summer flowers with a size of 3 to 5 cm per acre of water are stocked, and 1 kg per acre can be produced in the fall of that year.
More than 4-7kg of hair is on the face. Through stocking and breeding, 50 to 100 yuan per mu of water can be increased. It is advisable that fisheries in large and medium-sized waters be stocked with special precautions, and it is advisable for the fishery professionals to fully demonstrate that blindly launching fish that harms the main cultured fish or fish with high economic value will result in losses.
2 pond nesting
Pond nesting should be selected with small wild fish in adult fish ponds or broodstock pools. Do not nest fish in the fingerling pools, otherwise the fish will eat fish species and cause damage.
Lost. From late June to early July, the body length of 3 to 5 cm in each acre will carry between 10 to 20 tails, and it will be possible to produce about 100 kg of 750 to 1500 g of tails in the fall, and an increase of 100 yuan per mu.
3 Pond owners
1 pond conditions
The pond area can range from a few hundred square meters to several tens of acres. The bottom of the pond is flat and does not leak water. One week before the fish was introduced into the pond, dry ponds were used to disinfect the plants. Each well had 75 to 100 kg of lime or 5 to 10 kg of bleaching powder. Per acre
Manure with 100 ~ 200kg.
2 Fish stocking
The summer flowers and first-year-old fishes can be stocked.
In the summer of stocking, at the beginning of May, 80 to 100 tailed squid spring fishes weighing 100 to 200 g per acre are stocked, and the ratio between squid is 2:1 to 3:1. In late June to 7 At the beginning of the month, 150 to 500 tailed bream species with a body length of 3 to 5 cm per acre are released. Stocking 怀
Fish species require regular specifications to avoid killing each other. Until the fall of the pool, the size of the tail of the tail can reach 750 ~ 1500g. The survival rate of pregnant women is generally about 60%.
Stocking first-year fish species: In recent years, the large-scale Wycomelian clams have been welcomed by the market. The market price per kilogram reaches 22 to 26 yuan per mu, and the stocking size is about 1kg. There are about 20 to 30 tailed sturgeon species, and the stocking specifications should be neat. In addition, 30 to 40 tails of squid species with a stocking size of 1 to 1.5 kg are used. To fall out of the pond, the yield per mu can be reached 75 to 100kg in the face of the crop, and the average size can reach about 4kg. The survival rate of pregnant women can generally reach 80% to 90%.
3 feed feeding
Feed can feed wild fish, fish fry, fresh frozen sea miscellaneous fish and other low-value fish, can also feed chicken intestines and pig lungs, etc. The feed is minced and fed by an electric meat grinder. Place a 3 to 4 square meter bait station in the pond. It is also possible to feed directly without bait stations. In June and September, feed once a day and feed it once in the evening. The daily feed amount accounts for 2% to 5% of the total fish weight. From July to August, feed 2 times a day, feed once in the morning and evening, feed less in the morning, and feed more in the evening. The daily feeding amount accounts for 5% to 15% of the total fish weight. The feed is minced and placed on a bait station to feed the fish. It is advisable to feed the fish every 2 hours or so.
4 water quality regulation
During the feeding period, replenish water and keep the depth of water at a depth of about 1.5 meters. From July to August, lime water is splashed every 15 to 20 days, and 20 to 25 kg of lime are used per acre of water.
5 Fish Disease Prevention
Before the fingerlings enter the pond, the fish body must be disinfected. The fish body can be soaked with 3% salt water for 5 to 10 minutes. The feed to be fed is fresh and should not be fed to spoilage feeds. Feeding once every 20 days alligin medicine baits, add 50 ~ 100g per 100 kg of feed, can also be fed to other antimicrobial baits.
1, fry cultivation
1 Pond conditions and preparation
Choose an area of ​​1 to 5 acres is appropriate, the pool depth is more than 1.5m, the pool is free of weeds, the bottom of the pool is flat, non-leakage pond as a fry cultivation pool. 10 days before entering the pond, the fry is sterilized by the dry clear pond, with 75 to 100 kg of lime or 5 to 10 kg of bleaching powder per mu. After 2 days of disinfection, the water injection was 0.6 to 0.8m deep. Five to seven days before the fry enters the pond, 500 kg of chicken manure is fermented and fermented per mu, and zooplankton such as rotifers and cladocera are cultivated. When manure is applied, quicklime should be mixed in. To speed up the fermentation of chicken manure, chicken manure can be collected and sealed with plastic cloth.
2 fry stocking
Mussel stockings per mu 3 to 5
Million. Choose sunny, windless or breezy weather to put the seedlings. Before the fish are put into the pond, they are first put into cages and sieved to make them or trussed. The cage uses iron bars as a frame. First put the nylon bag or other container that holds the seedlings on the surface of the fish pond,
When the temperature of the water in the container is the same as the water temperature of the pool water, the fry is put into the cage or tie box. After fishing for 2 to 3 hours, the fry is fed and the fry is placed in the pool. Before laying the seedlings, arrange shading objects, such as water grass, straw curtains, palm husks, etc. in the shallow waters on the shore of the pond to provide concealed items for the fry, and the fish fry under the cover.
3 Feeding management
Three days before the fish enters the pond, the zooplankton cultured in the pond can feed on it without feed. If ponds have a small amount of zooplankton, they can be fed from other ponds. The fourth day can be fed with leeches and fish gills. Quanchiposa can be used. The amount of water fed is 5 to 10 kg per acre of water. According to the feeding conditions of the fry, the amount of feeding can be controlled flexibly.
4 fish out of the pool
After 7 to 10 days of cultivation, fry
When the total length reaches 3 to 5 cm, the pool should be separated in time to enter the next stage of rearing.
5 Fish Disease Prevention
The fry breeding stage is prone to bechaemic disease. There are two kinds of treatment methods: one is the mixture of copper sulfate and ferrous sulfate in Quan Quan, and 0.5 g of copper sulfate and 0.2 g of ferrous sulfate per cubic meter of water; It is a formal spill of formalin, with 100 g of formalin per cubic meter of water.
2. Adult fish breeding
The breeding of white-headed maggots can adopt three methods: water multiplication in medium and large scales, pond raising and pond raising.
1 Medium and large water surface proliferation
In lakes and reservoirs, small, low-value miscellaneous wild fish, such as common ear fish and squid fish, are abundant in resources. These small, low-value wild miscellaneous fish are a good feed for pregnant women. Through the stocking of fish heads, small, low-value wild fishes in lakes and reservoirs can be transformed into high-value head lice and raise the breeding efficiency. From late June to early July, 5 to 10 tails of summer flowers with a size of 3 to 5 cm per acre of water are stocked, and 1 kg per acre can be produced in the fall of that year.
More than 4-7kg of hair is on the face. Through stocking and breeding, 50 to 100 yuan per mu of water can be increased. It is advisable that fisheries in large and medium-sized waters be stocked with special precautions, and it is advisable for the fishery professionals to fully demonstrate that blindly launching fish that harms the main cultured fish or fish with high economic value will result in losses.
2 pond nesting
Pond nesting should be selected with small wild fish in adult fish ponds or broodstock pools. Do not nest fish in the fingerling pools, otherwise the fish will eat fish species and cause damage.
Lost. From late June to early July, the body length of 3 to 5 cm in each acre will carry between 10 to 20 tails, and it will be possible to produce about 100 kg of 750 to 1500 g of tails in the fall, and an increase of 100 yuan per mu.
3 Pond owners
1 pond conditions
The pond area can range from a few hundred square meters to several tens of acres. The bottom of the pond is flat and does not leak water. One week before the fish was introduced into the pond, dry ponds were used to disinfect the plants. Each well had 75 to 100 kg of lime or 5 to 10 kg of bleaching powder. Per acre
Manure with 100 ~ 200kg.
2 Fish stocking
The summer flowers and first-year-old fishes can be stocked.
In the summer of stocking, at the beginning of May, 80 to 100 tailed squid spring fishes weighing 100 to 200 g per acre are stocked, and the ratio between squid is 2:1 to 3:1. In late June to 7 At the beginning of the month, 150 to 500 tailed bream species with a body length of 3 to 5 cm per acre are released. Stocking 怀
Fish species require regular specifications to avoid killing each other. Until the fall of the pool, the size of the tail of the tail can reach 750 ~ 1500g. The survival rate of pregnant women is generally about 60%.
Stocking first-year fish species: In recent years, the large-scale Wycomelian clams have been welcomed by the market. The market price per kilogram reaches 22 to 26 yuan per mu, and the stocking size is about 1kg. There are about 20 to 30 tailed sturgeon species, and the stocking specifications should be neat. In addition, 30 to 40 tails of squid species with a stocking size of 1 to 1.5 kg are used. To fall out of the pond, the yield per mu can be reached 75 to 100kg in the face of the crop, and the average size can reach about 4kg. The survival rate of pregnant women can generally reach 80% to 90%.
3 feed feeding
Feed can feed wild fish, fish fry, fresh frozen sea miscellaneous fish and other low-value fish, can also feed chicken intestines and pig lungs, etc. The feed is minced and fed by an electric meat grinder. Place a 3 to 4 square meter bait station in the pond. It is also possible to feed directly without bait stations. In June and September, feed once a day and feed it once in the evening. The daily feed amount accounts for 2% to 5% of the total fish weight. From July to August, feed 2 times a day, feed once in the morning and evening, feed less in the morning, and feed more in the evening. The daily feeding amount accounts for 5% to 15% of the total fish weight. The feed is minced and placed on a bait station to feed the fish. It is advisable to feed the fish every 2 hours or so.
4 water quality regulation
During the feeding period, replenish water and keep the depth of water at a depth of about 1.5 meters. From July to August, lime water is splashed every 15 to 20 days, and 20 to 25 kg of lime are used per acre of water.
5 Fish Disease Prevention
Before the fingerlings enter the pond, the fish body must be disinfected. The fish body can be soaked with 3% salt water for 5 to 10 minutes. The feed to be fed is fresh and should not be fed to spoilage feeds. Feeding once every 20 days alligin medicine baits, add 50 ~ 100g per 100 kg of feed, can also be fed to other antimicrobial baits.
Dried Black Goji,Fresh Goji Berries,Black Chinese Wolfberry
Conventional Goji Berry Co., Ltd. , http://www.chdriedfruit.com