Main modes and main points of sea cucumber breeding
Whitening And Clearing Speckles Raw Materials Whitening And Clearing Speckles Raw Materials,Personal Care,Beauty & Personal Care,Glycyrrhetinic Acid Cream Xi'an XJeson Biotech Co., Ltd , https://www.xjesonbio.com
First, shrimp pond breeding points
1. Use existing shrimp ponds and put stones, tiles, and old tires as artificial reference reefs for sea cucumbers to inhabit.
2. Juvenile feeding density is about 5 cm in length and 3000 to 5,000 heads per mu.
3. Sea cucumbers are used as baits for benthic diatoms and organic debris attached to reefs. At the same time, artificial diets can be fed or algae like seaweed, kelp, and seaweed can be fed.
4. The depth of the shrimp pond should be maintained at 1.5 to 2.0 meters. The summer and winter water levels should be high to facilitate the smooth hibernation and wintering of the sea cucumber.
5. It is forbidden to use chemical disinfectant drugs and discharge oil sludge to shrimp ponds to prevent autolysis of the body. Also, pay attention to the temperature and salinity of the pool water, pay close attention to the water environment around the pool when receiving water, and ensure that the daily exchange of pool water is between 10% and 15%.
Second, the main point of sea bream farming
1. The sea area has a smooth flow, no major storms, and no pollution from industrial and domestic sewage.
2. When breeding, scallop cages, cages and plastic buckets are commonly used for aquaculture, and most of them are mixed with abalone. Senate seedlings have a body length of about 5 cm, a density of 200 to 300 heads per square meter, a hanging water layer of 5 to 8 meters, and a cage spacing of 3 to 4 meters.
3. The bait is Rhizoma ore, kelp, or artificial bait. The density of the individuals should be gradually reduced as they grow up, and the degree of damage of the cages should be checked at any time.
4. Before a typhoon or storm surge arrives, the cage net should be lowered in time to avoid loss.
5. Sea cucumbers and sea cucumbers can also be mixed with algae.
Third, the submarine cage culture points
1. Select inner bay area with calm seas, unobstructed tides, and no fresh water injection, and make net cages with coarse steel bars, which can be circular or rectangular, cover nets, and put some stones (3 kg to 5 kg/a). .
2. The stocking density is 3 cm to 5 cm, 200 to 300 heads per square meter, and the bait is artificially mixed with bait, kelp, and scallop. According to the situation, it can be fed once every 3 days to 5 days, or once a week.
3. Pay attention to the damage situation of the nets everyday, and timely and densely according to the speed of sea cucumber growth.
Fourth, intertidal belt stone cultivation points
1. In the intertidal zone, according to the characteristics of the terrain, steel bars, stones and cement are used to build dams.
2. The height of the dam should be determined according to the highest tide level in the calendar year. The bottom of the dam must be left in the drainage hole, and it can be naturally drained.
3. Stocking densities range from 1 cm to 2 cm, 20000 heads/mu, and 5 cm to 8000 heads to 10,000 heads/mu.
4. The bait may be artificially mixed with bait, and may also be kelp, benthic diatoms, and rata.
5. Note that the high water level should be advanced early in the rainy season, and chemical disinfection materials and oil pollution should be strictly prohibited to prevent the autolysis of the sample body. Regularly remove starfish and other predators.
V. Polygonization of factory-based abalone and ginseng
1. The use of existing facilities at the factory-financed Bao workshop has resulted in the use of mixed sea cucumbers.
2. Polyculture density is 4 cm in abalone 100 heads/m2, 3 cm to 4 cm in sea cucumbers 6 to 8 heads/m2.
3. During the cultivation period, the deep seawater wells should be used for cooling in the summer, and the boilers can be used to increase the water temperature in the winter so that the sea cucumbers do not experience the phenomenon of summer sleep and shorten the growth cycle.
Whitening ingredients can be divided into the following categories:
1. Inhibit tyrosinase raw materials: the main function of this kind of raw materials is to inhibit the activity of tyrosinase in the skin and prevent the formation of melanin, so as to achieve the effect of whitening and spot removal. Commonly, there are vitamin C, tyrosinase inhibitors.
2. Promote the renewal of the stratum corneum raw materials: these raw materials can promote the metabolism of the stratum corneum of the skin surface, remove the surface of the pigmentation spots, so that the skin becomes smooth and delicate. Common fruit acids, salicylic acid, etc..
3. Antioxidant raw materials: these raw materials can resist the attack of free radicals, prevent the formation of melanin, protect the skin from oxidative damage, so as to achieve the effect of whitening spots. Commonly, there are vitamin E, green tea extract and so on.
4. Raw materials to block melanin transmission: these raw materials can prevent melanin from basal layer to surface layer transmission, thus reducing pigmentation and achieving the effect of whitening and eliminating spots. The common ones are aloe vera extract and peony extract.
5. Skin repairing raw materials: these raw materials mainly help to repair damaged skin and promote the skin's self-repairing ability, so as to reduce the formation of pigmentation. Common hyaluronic acid, collagen and so on.
6. sunscreen raw materials: these raw materials can block ultraviolet damage to the skin, to prevent the formation of melanin, to achieve the effect of whitening spots. Commonly, there are titanium dioxide, zinc oxide and so on.