Fish Rainbow Trout Sturgeon Aquaculture Technology
2019-09-10 07:05:03
Rainbow Trout (I)
Carp is a cold-water fish, Polygonidae, native to the Pacific coast of North America and is one of the top four freshwater aquaculture species promoted by the United Nations Food and Agriculture Organization (FAO) to the world.
Rainbow trout has a small head, few bones, and a thick flesh. It has no muscle thorns in its meat, and its meat is tender and tender. The meat is delicious and has no smell. It is suitable for steaming, boiling, roasting, and it can also be eaten directly as raw fish.
According to the introduction of the relevant experts from the Provincial Fisheries Bureau and the knowledge of Liu Siquan, the farmer of the Hongkou Sanwen Industrial Development Co., Ltd. in Dujiangyan, rainbow trout should be raised in such a way:
1. The limit temperature for constructing rainbow trout is 0 to 30 degrees, and the growth water temperature is 5 to 22 degrees. The optimum growth temperature is 12 to 18 degrees. The dissolved oxygen value is required to be maintained above 6 mg/l (not less than 5 mg/l), and the suitable flow rate for living is 2 to 16 cm/s and the PH value is 7-8. Rainbow trout grows quickly, has high aquaculture yield, and has good economic benefits. It is particularly suitable for high-density intensive aquaculture in areas with abundant water, suitable water temperature, and rich dissolved oxygen. Mountain streams, groundwater, newly built reservoir bottom water, and cold spring water are all suitable. In general, farms should build juvenile fish ponds and adult fish ponds. Juvenile fish ponds are generally round, with an area of ​​10-30 square meters and a water depth of 20-40 centimeters. Adult fish pond is generally 100-200 square meters, water depth 70-90 centimeters, to show a certain slope, in order to use the natural drop of water to increase oxygen, fish ponds should be uniform standards, rectangular, cement structure, is conducive to feeding, management and control Fish disease, in order to meet the characteristics of rainbow trout-like reflux. If the fish pond is ideally built along the mountains, fish traps should be installed at the inlet and outlet.
2. Feed and manage juveniles until they reach 10 g or 15 g before screening. Select 40 percent of the large fish into the rear half of the fish pond, and 60 percent of the small fish into the first half of the fish pond. Keep fish separately. The juvenile pool of cement is cleaned once a day with water and the cement into fish ponds is cleaned once every five days. The soil pool is flushed with water 3 times per hour for 2 hours per week. At the outlet of the fish pond, the dissolved oxygen is less than 3.5 mg/L. To increase the flow rate or mechanically increase the oxygen, supplement the dissolved oxygen in the pool water.
3, common fish disease prevention and control of purchased eye eggs before shipment, use an effective concentration of 50ppm polyvinylpyrrolidone iodine (containing 1% of effective iodine) medicinal bath for 15 minutes during the medicated bath to oxygenation, medicated bath can kill Disinfect the eggs to prevent IHN virus.
Juvenile fish bacterial rickets symptoms: juvenile body color dark, at the outlet or along the wall surface of the swimming pool weakness, anorexia, the number of dead fish increased day by day, mucus have mucus, observe from the back, cover open. Treatment: Place the diseased fish in the net with a 1/2000 cupric sulfate solution bath for 1-2 minutes. The same pool non-disease fish net 1/2000 copper sulfate solution bath 1 minute. Bath with 1 ppm furan for 1 hour. On the first day of feeding the sulfa drug baits, veterinary sulfa 6-methoxypyrazine was added at a rate of 200 mg per kilogram in all the baits used on the day. In the first 2-4 days, the dosage was 150 mg/kg fish.
Juvenile enteritis symptoms: dark fish, anal ruddy mucus, purple intestine, no food or mucus in the intestines. Treatment: Feeding Triterpine baits, 200 mg of veterinary furin was added per kilogram to the total amount of feed on the first day, and on the 2nd to 4th day, 150 mg of furazolid per kilogram of fish was added.
Three generations of worms: surface parasite symptoms such as small melon larvae occur in juveniles below 50 grams. In particular, juveniles below 5 grams, the water temperature during the onset of more than 5-15 degrees, the diseased fish along the bottom of the pool or pool wall rapid travel, in a serious gathering at the outlet, the flow is weak, the number of dead fish increased, small melon worm There is a white spot on the body surface and mucus on the ankle. Treatment: Quanchiposa formalin, so that the pool into a 1/2000 concentration of medicinal bath for 10 minutes, before application, discharge 50% of the pool water, block the injection outlet, so that the pool of water to stop the flow, and then Quanchiposa made in advance Formalin solution. The medicine bath is opened and injected with fresh water immediately after 10 minutes. This method can both cure the disease and prevent disease. In the high incidence period, it can be taken once every 10 to 15 days according to the same method.
(two)
Carp is a sub-cold fish, it is a rare freshwater fish in the world. Its delicious taste, rich nutrition, and high economic value. Westerners love to eat caviar that is made of eggs of eel, is listed One of the three delicacies in the world. According to Guanghan interviewed by Mr. Jiang Shaohua, technical director of Sichuan Yongquan Rare Fish Breeding Co., Ltd., the optimum temperature for the growth of carp is 18-25 degrees and the dissolved oxygen content is required to be above 5 mg/l. Lacustally low-temperature, high-temperature mountainous Xishui and Yongquan, which are located in the Yongba area, are very suitable for the rearing of squid. The pond for squid formation is mainly an adult fish pond, which is basically the same as rainbow trout. The key to salmon farming is the domestication and disease prevention of seedlings. The domestication of carp needs patience. One is to be hungry and to force it to eat. The spray usually feeds two times in one hour and slowly extends for half an hour. It cannot be too hungry. Otherwise, it bites the tail and kills each other; the second is Live bait and feed are mixed and fed; three live baits and feeds are fed together and must be fully domesticated. The best 4-5% of the feed does not feed and the domestication is poor by as much as 40-50%. Disease prevention: Irregular disinfection, regular feeding baits, every 10 days or two weeks, with strong chlorine (first according to their actual test, generally 0.4-0.7ppm) disinfection. Bait: The Chinese herbal medicine is processed in the feed. Rhubarb, three yellow powder, allicin, and alkaloids are added (generally about 20 grams of feed for 10 minutes, or ask fish doctors to make allowances based on fish conditions). It is not easy to get sick after the eel grows to more than 150 grams.
Carp is a cold-water fish, Polygonidae, native to the Pacific coast of North America and is one of the top four freshwater aquaculture species promoted by the United Nations Food and Agriculture Organization (FAO) to the world.
Rainbow trout has a small head, few bones, and a thick flesh. It has no muscle thorns in its meat, and its meat is tender and tender. The meat is delicious and has no smell. It is suitable for steaming, boiling, roasting, and it can also be eaten directly as raw fish.
According to the introduction of the relevant experts from the Provincial Fisheries Bureau and the knowledge of Liu Siquan, the farmer of the Hongkou Sanwen Industrial Development Co., Ltd. in Dujiangyan, rainbow trout should be raised in such a way:
1. The limit temperature for constructing rainbow trout is 0 to 30 degrees, and the growth water temperature is 5 to 22 degrees. The optimum growth temperature is 12 to 18 degrees. The dissolved oxygen value is required to be maintained above 6 mg/l (not less than 5 mg/l), and the suitable flow rate for living is 2 to 16 cm/s and the PH value is 7-8. Rainbow trout grows quickly, has high aquaculture yield, and has good economic benefits. It is particularly suitable for high-density intensive aquaculture in areas with abundant water, suitable water temperature, and rich dissolved oxygen. Mountain streams, groundwater, newly built reservoir bottom water, and cold spring water are all suitable. In general, farms should build juvenile fish ponds and adult fish ponds. Juvenile fish ponds are generally round, with an area of ​​10-30 square meters and a water depth of 20-40 centimeters. Adult fish pond is generally 100-200 square meters, water depth 70-90 centimeters, to show a certain slope, in order to use the natural drop of water to increase oxygen, fish ponds should be uniform standards, rectangular, cement structure, is conducive to feeding, management and control Fish disease, in order to meet the characteristics of rainbow trout-like reflux. If the fish pond is ideally built along the mountains, fish traps should be installed at the inlet and outlet.
2. Feed and manage juveniles until they reach 10 g or 15 g before screening. Select 40 percent of the large fish into the rear half of the fish pond, and 60 percent of the small fish into the first half of the fish pond. Keep fish separately. The juvenile pool of cement is cleaned once a day with water and the cement into fish ponds is cleaned once every five days. The soil pool is flushed with water 3 times per hour for 2 hours per week. At the outlet of the fish pond, the dissolved oxygen is less than 3.5 mg/L. To increase the flow rate or mechanically increase the oxygen, supplement the dissolved oxygen in the pool water.
3, common fish disease prevention and control of purchased eye eggs before shipment, use an effective concentration of 50ppm polyvinylpyrrolidone iodine (containing 1% of effective iodine) medicinal bath for 15 minutes during the medicated bath to oxygenation, medicated bath can kill Disinfect the eggs to prevent IHN virus.
Juvenile fish bacterial rickets symptoms: juvenile body color dark, at the outlet or along the wall surface of the swimming pool weakness, anorexia, the number of dead fish increased day by day, mucus have mucus, observe from the back, cover open. Treatment: Place the diseased fish in the net with a 1/2000 cupric sulfate solution bath for 1-2 minutes. The same pool non-disease fish net 1/2000 copper sulfate solution bath 1 minute. Bath with 1 ppm furan for 1 hour. On the first day of feeding the sulfa drug baits, veterinary sulfa 6-methoxypyrazine was added at a rate of 200 mg per kilogram in all the baits used on the day. In the first 2-4 days, the dosage was 150 mg/kg fish.
Juvenile enteritis symptoms: dark fish, anal ruddy mucus, purple intestine, no food or mucus in the intestines. Treatment: Feeding Triterpine baits, 200 mg of veterinary furin was added per kilogram to the total amount of feed on the first day, and on the 2nd to 4th day, 150 mg of furazolid per kilogram of fish was added.
Three generations of worms: surface parasite symptoms such as small melon larvae occur in juveniles below 50 grams. In particular, juveniles below 5 grams, the water temperature during the onset of more than 5-15 degrees, the diseased fish along the bottom of the pool or pool wall rapid travel, in a serious gathering at the outlet, the flow is weak, the number of dead fish increased, small melon worm There is a white spot on the body surface and mucus on the ankle. Treatment: Quanchiposa formalin, so that the pool into a 1/2000 concentration of medicinal bath for 10 minutes, before application, discharge 50% of the pool water, block the injection outlet, so that the pool of water to stop the flow, and then Quanchiposa made in advance Formalin solution. The medicine bath is opened and injected with fresh water immediately after 10 minutes. This method can both cure the disease and prevent disease. In the high incidence period, it can be taken once every 10 to 15 days according to the same method.
(two)
Carp is a sub-cold fish, it is a rare freshwater fish in the world. Its delicious taste, rich nutrition, and high economic value. Westerners love to eat caviar that is made of eggs of eel, is listed One of the three delicacies in the world. According to Guanghan interviewed by Mr. Jiang Shaohua, technical director of Sichuan Yongquan Rare Fish Breeding Co., Ltd., the optimum temperature for the growth of carp is 18-25 degrees and the dissolved oxygen content is required to be above 5 mg/l. Lacustally low-temperature, high-temperature mountainous Xishui and Yongquan, which are located in the Yongba area, are very suitable for the rearing of squid. The pond for squid formation is mainly an adult fish pond, which is basically the same as rainbow trout. The key to salmon farming is the domestication and disease prevention of seedlings. The domestication of carp needs patience. One is to be hungry and to force it to eat. The spray usually feeds two times in one hour and slowly extends for half an hour. It cannot be too hungry. Otherwise, it bites the tail and kills each other; the second is Live bait and feed are mixed and fed; three live baits and feeds are fed together and must be fully domesticated. The best 4-5% of the feed does not feed and the domestication is poor by as much as 40-50%. Disease prevention: Irregular disinfection, regular feeding baits, every 10 days or two weeks, with strong chlorine (first according to their actual test, generally 0.4-0.7ppm) disinfection. Bait: The Chinese herbal medicine is processed in the feed. Rhubarb, three yellow powder, allicin, and alkaloids are added (generally about 20 grams of feed for 10 minutes, or ask fish doctors to make allowances based on fish conditions). It is not easy to get sick after the eel grows to more than 150 grams.
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