Running water fish farming is carried out in an artificially controlled water body for intensive, high-density, intensified culture. It has the advantages of short cycle, fast growth, high yield, high benefit, and high commodity rate. Running-water fish farming is generally about 40% more than conventional fish farming, and it is an emerging breeding technology promoted nationwide. The development of running fish farming has great prospects. First, because there are numerous reservoirs, rivers, and mountain streams in China, as long as conditions are created, it is possible to carry out fish farming. Second, the water flowing out of the fish ponds can still be used to irrigate farmland. Do a lot of water, do not waste water. First, flow pool site selection. The aquaculture pond requires ample water sources, excellent water quality, stable water level, suitable water temperature, and water temperature between 15 and 30°C between May and October. Requires sufficient sunlight, high dissolved oxygen, and easy supply of feed and fish species. The fish ponds can be best built in the vicinity of a natural drop, but can also refer to the reservoir, canal flow, the flow of water stream near the flow, or built in the pollution-free, long-standing mountain spring water system, or built near the power plant Waste hot water can be used. The ability to use these streams to fish can reduce production costs and increase economic efficiency. Second, the pool shape and area. The aquaculture pond is best rounded, oval or fan-shaped. The benefits of the square pool culture are poor, and it is difficult to reach the dead-end part due to running water in the pool. Pool walls are made of bricks or stones. Light the surface with cement, the bottom of the tank is leveled with concrete, and the pool is strong. A slope is built at both the inlet and outlet to guide the flow of water to the bottom, turning the entire pool of water, ensuring the exchange of water at the bottom of the pool and smooth drainage. The area of ​​fish ponds with a self-fluidized water source is 40 to 100 square meters, and 20 to 40 square meters for the purpose of pumping water as a water source. The fish pond inlets and outlets should be installed with fish-restricting facilities. The mesh depends on the size of the fish species, and the outlets and outlets should be designed separately. Third, fish stocking. Flowing fish farming can help promote the exchange of water, increase dissolved oxygen in water, and enhance fish metabolism and digestion and absorption. Appropriate increase in stocking capacity can also increase water production rates. The types of water-feeding fish are generally dominated by dietary fish such as grass carp, clams, and tilapia. Grass carp pool can be mixed with 10% of oysters or clams. The grass carp species should be large in size, with a tail weight of 150-400 grams, stocking 5-10 per square metre, and the stock size of carp ponds should be tidy and large, with a tail weight of 100-150 grams, and generally 25-35 stocks per square meter. Fish species gain 8-10 times. Tilapia is resistant to disease and has a short breeding cycle. Tilapia weighing about 30 grams at the time of stocking is fed for 40 days and can obtain about 100 grams of commercial fish. Tilapia is best kept as a single species due to the time it takes to catch other fish. Fourth, feeding and management. 1, water regulation. In natural water, surface water has high dissolved oxygen and water temperature, and surface water flow should be cited as much as possible. The amount of fish cultured in running water should be large, and the flow rate should be small. Excessive flow rate not only increases the physical exertion of the fish, but also causes difficulty in feeding. 2, feed feeding. Grass carp ponds are mainly fed with green fodder, such as aquatic plants, terrestrial grass, pumpkin leaves, bean leaves, etc., properly supplemented with concentrated feed, and carp ponds: they are mainly fed with concentrate feeds, such as barley, compound feeds, and water-feeding fishes. The feed coefficient is generally around 2. In the first few days of the fish pooling, the daily feeding was based on 3% of the fish's body weight. As the fish grew, it gradually increased to 5%-7% and was fed once every 2 hours during the day. 3, prevention and treatment of fish diseases. Before the fish species landed, the fish he used to disinfect with lime, 120 grams per square meter amounted to the entire pool. Before the fingerlings were placed, the seeds were soaked with 3% salt solution for 5 minutes and the grass carp was injected with the vaccine for immunoprophylaxis. 4, regular sewage. Take it once every two days or once daily. In order to observe the fish eating and growth, we must conduct a patrol pool and check the fish facilities.
Anti-wrinkle Ingredient
Anti-wrinkle ingredients are those active substances that can help slow the skin aging process, fade wrinkles that have formed, or prevent the development of new wrinkles. These ingredients generally achieve their anti-wrinkle effect by promoting collagen and elastin synthesis, increasing skin moisture, antioxidants, and promoting skin cell regeneration.
Here are some common anti-wrinkle ingredients
1. Hyaluronic acid
A naturally occurring polysaccharide substance in the human body, with excellent moisturizing properties, can attract and lock a lot of water, make the skin appear full and reduce fine lines.
2. Peptides (such as pentapeptides and hexapeptides)
Small molecular protein fragments that can stimulate the production of collagen, reduce the depth of expression lines and wrinkles, and have a certain anti-inflammatory effect.
3. Retinol (vitamin A alcohol)
Widely considered to be one of the most effective anti-wrinkle ingredients, it can promote skin cell renewal, increase skin thickness, reduce fine lines and wrinkles, and improve skin texture.
4. Vitamin C (ascorbic acid)
Powerful antioxidant, can promote collagen synthesis, reduce UV damage, lighten skin, and fight wrinkles caused by light aging.
5. Nicotinamide (nicotinamide)
A form of vitamin B3, which can enhance skin barrier function, reduce water loss, reduce color spots, and have a certain anti-wrinkle effect.
6. Coenzyme Q10
A powerful antioxidant that protects the skin from free radical damage, promotes cellular energy production, and helps maintain skin elasticity and firmness.
7. Tea polyphenols(especially green tea extract)
It has antioxidant and anti-inflammatory effects, can help resist environmental stress on the skin damage, slow the skin aging process.
8. Seaweed extract
Rich in a variety of minerals, Amino Acids and vitamins, can provide moisturizing, antioxidant and promote skin repair function, help reduce wrinkles.
When choosing products containing these ingredients, you should decide according to your skin type and specific needs, and pay attention to the method of use and possible side effects of the product, especially retinol products, which may cause skin sensitivity or dryness during initial use, and need to gradually establish tolerance. In addition, continuous sun protection is also one of the important measures to prevent wrinkles.
Anti-wrinkle Ingredient, Anti-wrinkle material, Anti-wrinkle effect,Crease resistant Ingredient
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