Spotted shrimp because of its high quality and high price, sought after by high-end consumer groups, prices have soared in recent years in the western region of Guangdong rapid expansion of aquaculture scale. mid- to late February period, a number of empty ponds around South China farmers have begun to carry out the seedling, and spotted shrimp has become a popular selection of objects, and because the farmers are generally optimistic about the market environment after the outbreak, the recent spotted shrimp farmers to sow a high degree of enthusiasm! At the same time, as farmers are generally optimistic about the market environment after the epidemic, the enthusiasm of spot prawn farmers has been high recently.

1, the most suitable in the mud and sand substrate soil pond culture, showing strong adaptability, faster growth, individual specifications neat advantage.

2. It shows better anti-stress ability during the breeding process, quick recovery after shelling and low mortality rate.

3, suitable for a variety of breeding modes, can be mixed with tilapia, grouper, also can be high-density intensive farming.

4, can raise large-size commercial shrimp, meat firm, high protein content. Steaming color red and bright, meat tender and delicious.

Myth 1: indiscriminate use of farmyard manure fertilizer pond

Many farmers like to use biological manure, such as chicken and duck manure, pig manure, etc. to fertilize the pond, and the amount of use is also very large, and some even more than 10 kg / acre, not knowing that these untreated feces contain a large number of pathogenic micro-organisms, after a large number of reproduction to become the dominant population, is the shrimp disease that leads to the main culprit of stealing the death of the culprits.

Myth 2: not feeding, late mixing a variety of nutrients

Many farmers believe that as long as the natural bait cultivated, the culture of the early stage of the basic can not feed, and to the late shrimp found slow growth, and a large number of feeding a variety of highly nutritious biofeeds, such as snail meat, duck eggs, etc., not only can not be as desired, but lead to further deterioration of the water body, increasing the breeding risk.

Misunderstanding three: heavy water, light bottom change

Since the Japanese shrimp farming cycle is up to half a year or more, the water quality requirements are also relatively high, so most farmers know the importance of water transfer, but also very willing to invest in this area, but the bottom of the pond for the Japanese shrimp habitat on the less concern, resulting in high ammonia nitrogen in the water body, nitrites and other substances, resulting in the occurrence of shrimp yellow gills, black gills and other phenomena.

Spotted shrimp, the water body ammonia nitrogen, nitrite and other substances high, resulting in shrimp yellow gills, black gills and other phenomena.

Spotted king prawns do not tolerate low temperatures, suitable for breeding in the early and mid-creation of higher temperatures. Earth pond seedling density of 2~5 million/? Mu, mu yield can reach 500 to 1200?jin. Shrimp feeding ability at night, feeding can be a little more.

Seeding

1, it is recommended to choose a sunny day, the water temperature stabilized at 25 ℃ or more when casting;

2, 2 hours before the casting of seedlings should be turned on the oxygenator stirring the water, while putting stress products such as VC, glucose;

3, casting the seedlings to try to avoid muddying the pool water, the first seedling bag into the pool to dip for 20 minutes, so that the bag of water temperature and the pool water temperature Close (temperature difference of no more than 3 ℃), in the wind where the water is deeper downwind release of seedlings, shrimp fry pond water and shrimp pond water salinity difference of no more than 5%.

Feeding

1, generally choose high-quality feed feeding, depending on the density of seedlings to determine the number of feeding, it is recommended to try to follow the "small amount of multiple meals" principle;

2, feeding according to the weather, water quality, shrimp health and activity and other flexibility, the first 40 days is difficult to observe through the Net measurement of material, generally check the bait table does not leave residual bait for the principle of feeding within 2.5-3 hours after eating the best; mid and late measurement of material can be mastered within 1-1.5 hours is good;

3, hot and muggy weather or thunderstorms or even heavy rainstorms, you can feed less or do not feed, so that you can reduce the feed coefficient to reduce the contamination of the water body;

4, in order to enhance the immunity of shrimp body, it is recommended to add bile acids in the feed. It is recommended to add bile acids, microbial preparations, vitamins in the feed, fed 2 meals a day, to protect the spot prawn hepatopancreas, effectively improve the shrimp's ability to resist disease.

Water control

1, water quality pH value is best in the range of 8.0-8.8, 6:00 a.m. before the measurement of dissolved oxygen content should not be less than 4mg / L, salinity control in the 15-25 ‰ between the most appropriate;

2, the ideal color of the water should be formed by the green or green algae or diatoms yellowish-green or dark brown, do not sudden changes in the color of the water and the overpopulation of filamentous algae, in particular, should be consciously raise the water level. In the early stage, the water level should be consciously raised, a small number of times to add water;

3, breeding in the middle and late stage, the pond water should be at a high water level, the average water level to be higher than the best 160cm, the water intake to sewage replenishment is appropriate to keep the transparency of the pond water in 30-40cm;

Change of the bottom

1, since the release of the seedling before the addition of beneficial microbial preparations every 7-10 days, the continuous use of the can be Reduce the accumulation of organic matter in the pond, for the later management to bring convenience;

2, the selection of high-quality products, the use of effective improvement of the pond bottom, reduce hydrogen sulfide, ammonia nitrogen and nitrite, etc.;

3, microbial preparations for growth and reproduction of certain conditions, such as dissolved oxygen, light, a certain carrier, and so on, the use of its effect is different in different conditions, so you should grasp the conditions of use. The use of microbial agents requires certain conditions for growth and reproduction, such as dissolved oxygen, light, certain carriers, etc. The effect of their use varies under different conditions, so the conditions of use should be grasped.

Disease prevention

1, white spot syndrome, baculovirus disease: all can be taken internally Duchenne leaf extract, florfenicol, vitamins, etc., for 5-7 days. Treatment is strictly prohibited during the drainage and irrigation of water, sterilization is strictly prohibited to stimulate shrimp stress, daily feeding feed halved, if in the late stage should be arranged in a timely manner in order to reduce the loss of shrimp, while attention should be paid to isolation, so as not to infect the surrounding shrimp ponds.

2, ciliosis: conventional insecticides on shrimp damage is great, we recommend the use of natural plant extracts, safe deworming. Eucalyptus essential oil can penetrate the biofilm structure of the worm body, so that the cellular fluid outflow, affecting the normal metabolism of the worm body, to achieve the effect of deworming.

3, red gill, black gill disease: mix with florfenicol for internal use, while disinfecting 3 times in a row, once a day. Drain 20% of the water level before disinfection, replenish the water to the original water level 2-3 days after disinfection, and regulate the water quality with microbial agents.

4, soft shell disease: refill new water, improve water quality, lime with water splashing, improve the pH value of the water in the shrimp pond, feeding high-quality feed, internal bile acid (to promote calcium absorption), active calcium (supplemental trace elements), vitamins, intensive calcium supplementation to promote shelling, strengthen the body.