The American gold cocoon, commonly known as the silk cocoon fish, is one of the most renowned carp species in the United States. It's also highly regarded as a popular warm and cold water freshwater fish, widely found in the central and northern regions of the country. This fish is not only visually striking but also prized for its tender, flavorful meat. Its nutritional profile is impressive, with higher levels of protein and amino acids compared to the Chinese mandarin fish, often called the "king of freshwater." It even surpasses herring, soft-shelled turtles, and stingrays in these nutrients. Additionally, it's rich in essential minerals like calcium, magnesium, and phosphorus, as well as trace elements and vitamins such as iron, sodium, and potassium.
**First, Artificial Breeding**
Artificial breeding of the American gold cocoon begins when the water temperature stabilizes around 14°C. The optimal temperature for spawning is between 18°C and 20°C. Before breeding, mature broodstock are placed in cages two hours in advance and given a slow water stimulation to encourage spawning. Commonly used hormones include salmon pituitary glands, human chorionic gonadotropin (hCG), and luteinizing hormone-releasing hormone analogs. Males receive one injection, while females receive two. Artificial insemination is typically carried out 8 to 24 hours after the injections. The incubation period varies depending on the water temperature—around 12 days at 12°C, and about 5 days at 18°C. Within the range of 14°C to 18°C, the hatching rate usually reaches 85% to 90%.
**Second, Aquaculture Production**
**1. Larval Fish Rearing**
When raising the fish in large ponds, the area should be between 3 to 5 mu (approximately 0.2 to 0.3 hectares) with a water depth of 1.0 to 1.5 meters. Water quality must be carefully managed before stocking. The stocking density is generally between 50,000 to 100,000 fry per mu. A semi-intensive system is often used, where small cement pools (dozens of square meters) are used to raise the young fish. Typically, thousands of eggs are placed per square meter. In intensive systems, stocking densities need to be carefully controlled, starting at 100,000 to 200,000 per acre.
**2. Fish Growth Stages**
Once the fish reach a size of 2 to 3 cm, they are transferred to grow-out ponds. Stocking density is usually 500 to 600 per mu, and this can be increased to 7,000 to 10,000 per mu in intensive farming. Once the fish reach 1.8 cm in length, they can be trained to eat artificial compound feed.
**3. Adult Fish Cultivation**
For adult fish, the pond size ranges from 5 to 15 mu, with a water depth of 1.5 to 2.5 meters. When using full-price compound feed, the stocking density should be kept between 1,500 to 3,000 fish per acre for those measuring 10 to 15 cm. A combination of light fertilization and feeding is used for daily management. By the end of the year, the average market size can reach 150 grams per fish, with a yield of over 400 kg per mu.
Monitoring without network means that mobile phones and cameras can only be seen within a certain range of 5~10 meters.
Therefore, no network and no power is just a gimmick. We must pay attention to distinguish when buying.
Is the Solar Camera easy to use
Jiajie intelligent surveillance camera is very good
Advantages and disadvantages of solar monitoring
Probably.
Generally, offline display has the following two conditions.
One is that the installed 4G card has no traffic and cannot provide network connection for monitoring;
The other is that there is a problem with the signal receiving device, which makes it unable to connect to the network. Therefore, the user can access the APP connected to the monitor to check whether there is still traffic on the 4G card. If there is still traffic, there is a problem with the monitoring; If there is no traffic, the renewal fee can continue to be used.
Which is the best solar Outdoor Camera
It may be that the poor contact of the power plug causes power on, heating and power failure, or it may be that the camera's internal control motherboard fails, causing power on for several minutes and automatic power off protection.
The camera works continuously, and the internal chip may overheat, which also exists in many SLR cameras. Some cameras impose time limits on continuous shooting. Centralized power supply with high-power switching power supply
Disadvantages of camera solar power supply
The main advantages of solar photovoltaic power generation are:
(1) Simple structure, small and light volume;
(2) Easy to install, easy to transport, short construction period, and short time to obtain energy;
(3) It is easy to use and maintain, and can work normally in the temperature range of - 50 ℃~- 65 ℃;
(4) Safe, reliable, noiseless, pollution-free, and absolutely clean (pollution-free);
(5) The advantages of building roofs can be used without the restriction of resource distribution regions; For example, areas without electricity and areas with complex terrain;
(6) The rate of price reduction is fast, and the time for energy repayment may be shortened;
(7) It can be matched with the battery to form an independent power supply, or it can be connected to the grid for power generation.
(8) Local power generation and supply without fuel consumption and transmission lines
The main disadvantages of solar photovoltaic power generation are:
(1) Low solar energy density and large coverage area;
(2) Photovoltaic power generation is intermittent and random;
Does the solar PTZ Camera System Kits work well
In fact, there are no network and no electricity cameras, but they have certain limitations. The working time of a camera with batteries or external solar panels is limited.Monitoring without network means that mobile phones and cameras can only be seen within a certain range of 5~10 meters.
Therefore, no network and no power is just a gimmick. We must pay attention to distinguish when buying.
Is the Solar Camera easy to use
Jiajie intelligent surveillance camera is very good
Advantages and disadvantages of solar monitoring
Probably.
Generally, offline display has the following two conditions.
One is that the installed 4G card has no traffic and cannot provide network connection for monitoring;
The other is that there is a problem with the signal receiving device, which makes it unable to connect to the network. Therefore, the user can access the APP connected to the monitor to check whether there is still traffic on the 4G card. If there is still traffic, there is a problem with the monitoring; If there is no traffic, the renewal fee can continue to be used.
Which is the best solar Outdoor Camera
It may be that the poor contact of the power plug causes power on, heating and power failure, or it may be that the camera's internal control motherboard fails, causing power on for several minutes and automatic power off protection.
The camera works continuously, and the internal chip may overheat, which also exists in many SLR cameras. Some cameras impose time limits on continuous shooting. Centralized power supply with high-power switching power supply
Disadvantages of camera solar power supply
The main advantages of solar photovoltaic power generation are:
(1) Simple structure, small and light volume;
(2) Easy to install, easy to transport, short construction period, and short time to obtain energy;
(3) It is easy to use and maintain, and can work normally in the temperature range of - 50 ℃~- 65 ℃;
(4) Safe, reliable, noiseless, pollution-free, and absolutely clean (pollution-free);
(5) The advantages of building roofs can be used without the restriction of resource distribution regions; For example, areas without electricity and areas with complex terrain;
(6) The rate of price reduction is fast, and the time for energy repayment may be shortened;
(7) It can be matched with the battery to form an independent power supply, or it can be connected to the grid for power generation.
(8) Local power generation and supply without fuel consumption and transmission lines
The main disadvantages of solar photovoltaic power generation are:
(1) Low solar energy density and large coverage area;
(2) Photovoltaic power generation is intermittent and random;
(3) Solar energy resources in various regions are not available, so photovoltaic power generation is highly regional.
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Shenzhen Fuvision Electronics Co., Ltd. , https://www.outdoorsolarcamera.com