Have you heard that fish also have regenerative capacity? Look here, the tails are all short, but do not worry that they will soon open a new tail, hey, and like the sea cucumber it also has the ability to regenerate, curious enough, this kind of fish must be very nutritious. You may be able to name it here when you see it. Dragons, shovels, tongues, seesaws, and glutinous rice are all local names. Its real name is semi-smooth tongue. As the saying goes, it's easy to know that eating squid in autumn is a rare enjoyment. However, it is still impossible to artificially breed semi-slip tongues two years ago.
Because the Huanghai Institute conducted its investigations and biological studies in 1978, it was found during the study that the difference between male and female was particularly large. The female gonads were particularly large, the males were very small, and only the peanuts were so large. The male fertility was relatively speaking. It is relatively weak. Under natural conditions, the semi-smooth tongue is benthic, its mobility is small and its migration distance is very short, so its colonization is not so easy. In the natural world, reproductive ability is weak.
It seems that artificial breeding of semi-slip tongue licking is by no means an easy task. However, in the last two years, Liu Shoutang, the young entrepreneur of Haiyang City, Shandong Province, who is rich in marine technology, spotted this rare business opportunity. The first-class experts of China’s research on semi-slippery tongues were invited to Haiyang and provided first-rate research conditions and a full range of services. The artificial breeding of semi-smooth tongues has landed in its hometown of Haiyang, and it has finally produced fruitful results. This year, they have bred nearly 2 million semi-smooth tongue fish fry, with an overall hatching rate of more than 90%. It is also because of their farsightedness and enthusiasm that this place hangs on the national 863 plan mariculture seed project north base brand. Wait until autumn comes here will create a lot of value. When it is worthless, it has become China's largest artificial breeding base for glutinous rice.
From a cost-effective point of view, the semi-slip tongue licking is a newly-developed species, and this fish is the first artificially cultured species of the oysters. Now the north and the south have very much recognized this fish, and the market price of one kilogram of fish can be purchased. 320 yuan, if calculated in this way, raising 10,000 sticks of a semi-skid tongue can create a production value of 3 million yuan. The economic benefits are enormous.
According to experts, the semi-smooth tongue worm grows fast and has large individuals. After 26 years of research and research, the artificial breeding technology of semi-slip tongue licking has made breakthrough progress. The successful breeding and breeding techniques are applied to the production, and the semi-smooth tongue can be used high. The factory-based aquaculture production can also be used for low-cost pond aquaculture production. At present, there are 20,000 cubic meters of nursery water, 20,000 cubic meters of factory demonstration farms, and 2000 acres of pond culture demonstration area.
Relying on the Yellow Sea Fisheries Research Institute and many other scientific research institutions for technical support, each year bears a number of 863 issues, among which the semi-slip tongue is a high-quality breed. This fish is very suitable for artificial breeding. After more than two years of scientific research, it has now achieved A major breakthrough has been achieved with factory-scale, full-scale manual production. This year, the number of seedlings has reached 2 million, and the specifications have now grown to 5-10 cm. The quality of the seedlings is very healthy, and factory-based artificial breeding can be carried out after the Spring Festival.
Special effects: The fry of the factory culture technology is so delicate, and after being trekking, it is still intact and has to be admired by the ingenuity of the staff. So what is it doing? After a month of careful cultivation of the fertilized eggs, the fry grew up every day, but their physique has also changed. At this time, the staff must timely separate the different specifications of the seed, and according to the requirements of stocking density Into the culture tank.
Character version: General 8-10 cm 400-150/m2
15-20 centimeters 100-60 tails/square meter
5-30 centimeters 35-20 tails/square meter
35-45 cm 18-10/m2 So, what kind of breeding environment is needed for half-sliding tongues? The semi-smooth tongue adapts to a very wide temperature range. It can be used for winter at 3 degrees Celsius and summer at 32 degrees Celsius. The whole adaptation temperature is suitable for farming in most of the sea areas of China. The semi-slip tongue licking culture area goes north to Liaoning and south to Fujian and Guangdong.
In the process of industrial aquaculture, daily temperature of seawater aquaculture is changed from 300 to 500% per day, in summer, the daily water exchange capacity is 500 to 800%, and in winter, the daily water exchange capacity can be reduced to 200 to 300% at low temperatures. In the aquaculture process, the bottom of the pool is strictly required to be cleaned once a month. The fish needs to be moved to a clean pool for culture, the original pool bottom and the pool wall should be brushed and sterilized with potassium permanganate.
In fact, the key to the success of artificially cultured semi-smooth tongue licks is feeding on feed. Experts have found that due to slow licking and long feeding time, feeding pellet feeds is the main process in the culturing process, and different physique fish have to be fed differently. The feed is generally fed 2-3 times a day, and the daily feed is 2-3% of the fish's body weight. Looking at this bulging stomach is only a small part of the fish body. It can be imagined that the feed conversion rate is quite high.
Under the conditions of factory culture, the semi-slip tongue licks can reach 50 cm in length after two years, and can weigh more than one kilogram. The economic benefit is very high under the condition of factory culture. Through two years of practice, it has been proved that the tongue can be widely used.鳎 factory culture.
In recent years, due to the landslide of the shrimp aquaculture industry, many shrimp ponds have been abandoned and abandoned, and through simple modification and treatment, semi-smooth tongue gill culture can be carried out. Pond culture has rich biological feed, high output-to-investment ratio, and easy management and management.
Because there is less activity in the semi-slip tongue licking, the squid body is easily attached with dirt. Therefore, fresh suspended matters are required, the water body must have certain fluctuation, the transparency of the water in the culture pond is 50 cm, and the depth of water is more than 1 meter. It is convenient to change the natural tide.
Experts suggest that the size of the ponds and ponds should be about 8 cm, and the temperature above 15 degrees should be better.
From the perspective of industry prospects, I believe that there are very few hopes for breeding fish. The main reason is that there are relatively few high-quality breeds. Now, there are many farmed fish, including sea cages, but there are fewer quality fish and the price is one. More than a hundred dollars, but now that the turbot can be achieved, slate fish can be achieved, other fish can not reach this price, semi-slip tongue tongue is a high quality variety of our country, especially the coastal cities are very Understand that the price of one kilogram of dead fish on its sea is also more than one hundred yuan, so the market will be very welcome after we develop this fish.
Semi-slip tongue licking is a typical endemic species and is a precious fish species. The breeding ability of the fingerling itself is very weak and the amount is small, so it is precious and it is also called as a noble fish. Because of its high economic value, it is welcomed by the aquaculture industry, which is an optimization of the fishery industry in China. The structure and enhancement of the aquaculture industry's ability to participate in the international market will have a positive impact. It is believed that in the next few years, its large-scale promotion of breeding semi-slip tongues will surely set off another new upsurge of the breeding industry. (CCTV International)
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