Heilongjiang Province is a cold zone, and the wintering period of fish is as long as six months. Due to the limitation of natural conditions, the time for eel breeding is late, so the fry cultivation time is short, the specifications are small, and the quality is poor. In order to solve the problem of early reproduction of squid, Suihua City has used hot water boilers to raise the temperature, artificially control the temperature, and closed loop squid greenhouse incubation workshops. For several consecutive years, it has achieved a good early-commence effect. Now some basic information is reported as follows:
1. The total construction area of ​​the project is 850.7m2, including 244m2 hatching workshop (built pond 126m2), sedimentation pond 18m2, filtration, heating, temperature control pool 102m2, boiler room, electric control room, laboratory and so on.
Second, the artificial temperature-controlled closed circulatory system uses heating boiler heating, through the hot water pipe to make the workshop water temperature meet the temperature requirements of squid breeding water, automatic control of water purification facilities, a fully closed circulating water supply, artificially created to adapt to the breeding of carp ecology Environment, to achieve the purpose of promoting premature salmon production.
Third, a warming up, artificial aphrodisiac, to promote the early spawning carp carp spring natural spawning, generally around May 20, the water temperature between 16-18 °C. Artificial temperature control creates a good ecological environment for fish. The spawning time can be advanced to May 2-8, indoor water temperature is controlled at 181°C (the outdoor pond water temperature is only about 4-8°C during the same period), and the broodstock is taken out of the house. Ponds were selected and placed in indoor ponds. Males and females were singled out. They were stimulated by medium water flow, raised for 20-24 hours, and artificially induced by labor at 15-17 hours the following day. A one-time injection was used. The oxytocin was LRH-A3 plus dopamine. Refer to the instructions for the dose. The proportion of males to females was 1:1, and about 15 groups were placed in each pool. It takes about 8-10 hours after spawning to spawn. Over the past few years, the rate of spawning and fertilization has been above 80%.
IV. Incubation After the fish eggs have been measured and measured, the eggs are broiled according to the density of each larvae directly cultivated after the seedlings are expected to emerge. The water temperature is controlled at 211° C. and emerges after about 3 days and nights. When the eggs hatch, the water flow should be increased to ensure that the embryos need oxygen, and the flow rate should be properly reduced until the hatching period. The hatching rate is above 90%.
5. The stocking density of fry is 8 to 10 thousand pigs per cubic meter. The volume of water exchange per hour is 80% in the first 3 days, 100% in 4 to 7 days, and 150% in 8 to 12 days. The oxygen content is kept above 6 mg/l. When the water temperature was 211°C, Wuzi was grown after 10-12 days, and the survival rate was 90%.
6. Prevention of Fish Diseases The best source of water for greenhouse incubation is well water. Because it is cloudy with natural water, it is not easy to filter. At the same time, natural water will bring in some germs. When the broodstock enters the pond, it is necessary to sterilize the fish. The eggs and the tools used must be strictly sterilized before use to prevent fish disease.
VII. Economic Benefits The production capacity of the squid hatchery in the greenhouse is: production of 20 million ebony. If calculated according to 10 million, the annual production cost is: 5000 yuan for bait, 25,000 yuan for depreciation of artificial equipment, 12,500 yuan for coal and electricity, 17500 yuan for broodstock breeding and other fees, totaling 60,000 yuan. The production cost is 60 yuan/million pounds. If the shipment of Southern Black Tail Fry is to be 180/ten thousand, 120 yuan/ten thousand can be profited. If the water pond is used to cultivate Wuzi, the cost will be RMB 80/million, and the profit will be RMB 100/million. If the production of 20 million tails, only in the pro-fish breakage fees and bait charges to increase 1 times, 15,000 yuan, then the cost is only 40 yuan / ten thousand or so, can profit 140 yuan / ten thousand, the economic benefit is considerable.
Eight, summary
1. The use of artificial temperature-raising technology to breed young shoots for early seedlings can be advanced to Heitang in May 20th in Heilongjiang Province. This will lay a foundation for the cultivation of large-species fingerlings and shorten the cycle of fish farming.
2. It can be used for the transportation of fry fish fry in southern China, grasshoppers and grass carp. It can be cultivated indoors to avoid the natural low temperature period and improve the survival rate so as to reduce the cost of Wuzi.
3. Most of the fish species production units in Heilongjiang Province use hot water boilers for heating in the winter, and they can use the existing heating equipment to construct a greenhouse for early propagation of fry in accordance with local conditions, so as to solve the problem of early-stage seedling production.
4. With the development of the famous, special and excellent fish breeding industry, the breeding of famous, special and excellent aquatic products can be carried out by using the greenhouse season and outdoor plastic greenhouses.
1. The total construction area of ​​the project is 850.7m2, including 244m2 hatching workshop (built pond 126m2), sedimentation pond 18m2, filtration, heating, temperature control pool 102m2, boiler room, electric control room, laboratory and so on.
Second, the artificial temperature-controlled closed circulatory system uses heating boiler heating, through the hot water pipe to make the workshop water temperature meet the temperature requirements of squid breeding water, automatic control of water purification facilities, a fully closed circulating water supply, artificially created to adapt to the breeding of carp ecology Environment, to achieve the purpose of promoting premature salmon production.
Third, a warming up, artificial aphrodisiac, to promote the early spawning carp carp spring natural spawning, generally around May 20, the water temperature between 16-18 °C. Artificial temperature control creates a good ecological environment for fish. The spawning time can be advanced to May 2-8, indoor water temperature is controlled at 181°C (the outdoor pond water temperature is only about 4-8°C during the same period), and the broodstock is taken out of the house. Ponds were selected and placed in indoor ponds. Males and females were singled out. They were stimulated by medium water flow, raised for 20-24 hours, and artificially induced by labor at 15-17 hours the following day. A one-time injection was used. The oxytocin was LRH-A3 plus dopamine. Refer to the instructions for the dose. The proportion of males to females was 1:1, and about 15 groups were placed in each pool. It takes about 8-10 hours after spawning to spawn. Over the past few years, the rate of spawning and fertilization has been above 80%.
IV. Incubation After the fish eggs have been measured and measured, the eggs are broiled according to the density of each larvae directly cultivated after the seedlings are expected to emerge. The water temperature is controlled at 211° C. and emerges after about 3 days and nights. When the eggs hatch, the water flow should be increased to ensure that the embryos need oxygen, and the flow rate should be properly reduced until the hatching period. The hatching rate is above 90%.
5. The stocking density of fry is 8 to 10 thousand pigs per cubic meter. The volume of water exchange per hour is 80% in the first 3 days, 100% in 4 to 7 days, and 150% in 8 to 12 days. The oxygen content is kept above 6 mg/l. When the water temperature was 211°C, Wuzi was grown after 10-12 days, and the survival rate was 90%.
6. Prevention of Fish Diseases The best source of water for greenhouse incubation is well water. Because it is cloudy with natural water, it is not easy to filter. At the same time, natural water will bring in some germs. When the broodstock enters the pond, it is necessary to sterilize the fish. The eggs and the tools used must be strictly sterilized before use to prevent fish disease.
VII. Economic Benefits The production capacity of the squid hatchery in the greenhouse is: production of 20 million ebony. If calculated according to 10 million, the annual production cost is: 5000 yuan for bait, 25,000 yuan for depreciation of artificial equipment, 12,500 yuan for coal and electricity, 17500 yuan for broodstock breeding and other fees, totaling 60,000 yuan. The production cost is 60 yuan/million pounds. If the shipment of Southern Black Tail Fry is to be 180/ten thousand, 120 yuan/ten thousand can be profited. If the water pond is used to cultivate Wuzi, the cost will be RMB 80/million, and the profit will be RMB 100/million. If the production of 20 million tails, only in the pro-fish breakage fees and bait charges to increase 1 times, 15,000 yuan, then the cost is only 40 yuan / ten thousand or so, can profit 140 yuan / ten thousand, the economic benefit is considerable.
Eight, summary
1. The use of artificial temperature-raising technology to breed young shoots for early seedlings can be advanced to Heitang in May 20th in Heilongjiang Province. This will lay a foundation for the cultivation of large-species fingerlings and shorten the cycle of fish farming.
2. It can be used for the transportation of fry fish fry in southern China, grasshoppers and grass carp. It can be cultivated indoors to avoid the natural low temperature period and improve the survival rate so as to reduce the cost of Wuzi.
3. Most of the fish species production units in Heilongjiang Province use hot water boilers for heating in the winter, and they can use the existing heating equipment to construct a greenhouse for early propagation of fry in accordance with local conditions, so as to solve the problem of early-stage seedling production.
4. With the development of the famous, special and excellent fish breeding industry, the breeding of famous, special and excellent aquatic products can be carried out by using the greenhouse season and outdoor plastic greenhouses.
Diatomite Deodorization Desiccant
Air Freshener Balls,Diatomite Deodorization Desiccant,Diatomite Desiccant,Diatomite Drying Egg
Dongguan Vanilla Bioengineering Co., Ltd. , http://www.healthecigarette.de