In the next ten years, fish fish in the main stream of the Yangtze River and in the key waters of the Yangtze River Basin will be prohibited. After many people receive a ten-year ban on fishing in the Yangtze River, their first reaction is: will this affect our eating of fish. At present, it is clear that consumers who live by the Yangtze River and are accustomed to eating Yangtze River fish will no longer be able to eat Yangtze River fish in ten years.
For example, in Hubei Province, the Yangtze River and the Han River run through the whole territory, and the ravines formed by Dongting Lake, Honghu Lake and Liangzi Lake make the people here "no fish and no joy". After the ban on fishing in the Yangtze River, does it have an impact on the local people eating fish?
In fact, before the ban on fishing, there were already expert teams that studied artificial breeding of Yangtze River fish. These artificially farmed fish, whether from the taste or nutritional value of the fish, are fully capable of replacing wild fish, and in terms of price, they can also compete with wild fish.
The Yangtze River fish specialty species, the black-tailed near-red bass, has become an endangered species because of the sharp decline in natural populations in recent years. In the 1990s, it was called a "third-class urgent protection animal". In 1996, the conservation of the black-tailed near-red carp began, and in 2002, the local fisheries research institute in Wuhan joined the research ranks, with the goal of targeting the expansion of the black-tailed near-red carp.
After a series of studies and breeding, Pioneer One and Pioneer Two were introduced one after another.
Pioneer No. 1, using black-tailed near-red carp and large white fish for hybridization, has the characteristics of low breeding cost. Compared with the original mother-billed carp, the breeding cost is reduced by 40%, and the 40% of the breeding cost is mainly reflected in the feed. The reduction in feed costs did not affect the protein content of fish, but the protein increased by 2%, increasing to 22%. The protein of ordinary fish is around 18%.
Pioneer No. 2 is a hybrid of the black-tailed near-red carp and the Wuchang fish. In Wuhan, Hubei Province, it is known as the "upgraded version" of Wuchang fish. In 2019, Pioneer No. 2 passed the approval of the National Aquatic Origin and Fine Species Approval Committee, and the Wuchang Fish Family added new Ding. Pioneer No. 2 has strong disease resistance, almost no medication in the breeding process, and the survival rate can reach more than 98%. This high survival rate, especially during long-distance transportation, is most prominent, and the loss will be small.
What breeding techniques do Pioneer One and Pioneer Two have?
In Hubei, a method of container fish farming is quietly becoming popular. In April 2020, this containerized fish farming model was adopted in a farm farming base in the Dongxihu District of Wuhan City, Hubei Province. The most important feature of container farming is the 24-hour circulating water. Water is pumped from the purified pond into the container.
Through the nanotubes connected to the inside of the box, the bottom layer of feces is turned up, with the thrust of circulating water, feces and other excrement, it is pushed to the bottom of the container, the bottom of the container has a layer of sewage pipe, the three links of the sewage pipe is responsible for controlling the water level. The amount of inlet water is consistent with the amount of sewage and effluent, which is equivalent to the water circulation in the entire container plus the filtration function. Filtered debris and feces, through the function of particulate machine and anaerobic fermentation, can be used to grow vegetables and plant fruit trees.
Container farming gives Pioneer One and Pioneer Two a clean and comfortable farming environment, so that fish no longer swim on the lake and water, but land in containers. One of the most critical breeding points here is to let the fish live in the flowing water, and the purpose of this is actually to imitate the natural environment of the Yangtze River. Because fish like to swim against the water, when the water is swimming for 24 hours, the fish living in this environment are like stepping on a treadmill, the fish move, and the natural taste and deliciousness are closer to wild fish.
In this private farm, Pioneer No. 1 and Pioneer No. 2 each cultivate more than 5,000 catties, which have all been booked at present, and the price is 10 yuan per kilogram, which is 2 yuan more expensive than ordinary Wuchang fish per kilogram. The price has gone up, the taste is similar to that of wild fish, and in the context of the ban on fishing, the changes in the species produced by these technologies may be more in the future.