Two farming techniques

Pond intensive breeding, particularly the Wujing method, has gained popularity in Zhejiang, Guangdong, and Shandong provinces, achieving impressive yields of up to 5,000 kilograms per mu. These ponds typically range from 1 to 1.5 mu in size, with a depth of 2 to 2.5 meters and a water level of 1.5 to 2 meters. The pond's edge should be 0.5 meters above the water level. Water quality must be neutral or slightly alkaline, and both intake and drainage systems require secure anti-escape measures. Fences made of bamboo or fish nets are commonly used, while aquatic plants are planted around the pond, occupying no more than 25% of the total area. Before stocking, the pond is disinfected using 100–150 kg of fresh lime per acre, followed by a one-week exposure period before refilling with water. Fish are stocked after 10 days of water infusion. Prior to disinfection, the mud is dug to remove any remaining black worms. Fish species are introduced when they are 10–20 cm long, divided into 2–3 groups to ensure uniform growth. They are fed a day before each division. Once they reach 20 cm, they are moved to larger ponds. Stocking usually occurs between June and August for main species, and between March and April for winter fish. Stocking density varies depending on water depth and pond conditions, with adjustments made for shallow or poorly supplied ponds. Fish are briefly immersed in 2–3% saltwater for 10–15 minutes before being placed in the pond. Feeding follows the "four set" principle, with two feedings daily—once in the morning (8–9 AM) and once in the afternoon (4–5 PM). Fresh small fish and shrimp are gradually introduced into the feeding area, which is enclosed by bamboo fences to create a 9–16 square meter zone. Artificial compound feed is placed on a feeding table, 1 meter away from the pond edge, with a water depth of 20–30 cm. Initially, fish are fed 8–10% of their body weight, decreasing to 6% as they grow, then to 5–8% as they mature. Daily patrols are essential to monitor fish behavior, feeding patterns, and water quality. During hot seasons, water changes are frequent: one-third weekly in early stages, half every two weeks, and four-fifths at later stages. This helps maintain optimal conditions for fish growth. For home fishponds, the pond should be high with a thin layer of sludge at the bottom to avoid low catch rates and poor performance in the following year. Efficient drainage and irrigation systems are necessary to keep the water clean and allow timely water quality adjustments. When stocking black mullet, it's important to follow the rule that their size should not exceed half that of the main fish species. Ideal sizes range from 4–13 cm, with 8–10 cm being most common. Fish should be healthy, disease-free, and of uniform size. Stocking times vary by region, with northern areas stocking between June and July, and southern areas between May and June. Stocking should not exceed 7 months to avoid overlapping with the main fish harvest. Stocking density depends on fish size and pond conditions. For example, 10–20 fish per acre for 50–150 gram fish, 20–30 for 12–15 cm fish, and 40–50 for 8–10 cm fish. Proper management ensures an average yield of 10–15 kg per mu. Feeding for polyculture includes extra feed for natural prey fish, indirectly supporting the growth of wild species. Floating aquatic plants like water hyacinths and water lettuce are added in limited quantities (no more than 20% of the pond surface) to provide shelter, shade, and water quality regulation. Wushao fish are known for their jumping ability, so ponds must have barriers at least 40 cm above the water. Anti-escape measures at inlets and outlets are crucial, especially after heavy rain. Ferrous sulfate should be avoided, as it can be toxic to black mullet. Instead, copper sulfate or trichlorfon may be used for disease control. At the end of the season, dry pond fishing requires removing all remaining fish to prepare for the next year. Any leftover fish should be treated with medication to ensure a clean pond for future use.

Anti Aging Raw Materials

Recommendations for selecting anti-aging raw materials:

5. Sustainability: Anti-aging cosmetic ingredients should be sustainable and be able to be produced and used under environmentally friendly conditions, without causing pollution or damage to the environment.

6. Retinol: can promote cell regeneration, reduce wrinkles, and improve skin elasticity.
7. Vitamin C: Has an antioxidant effect, can resist free radical damage, and brightens skin.
8. Vitamin E: Helps skin retain moisture and strengthens skin barrier function.
9. Peptides: such as hexapeptides, which can stimulate collagen production and reduce fine lines.
10. Polyphenols: such as resveratrol, have powerful antioxidant effects.
11. Hyaluronic acid: keeps skin hydrated, and makes skin fuller and smoother.
12. Coenzyme Q10: Enhance cell energy, and enhance skin vitality.
13. Grape seed extract: Rich in antioxidants that protect skin from the effects of aging.
14. Soy isoflavones: regulate hormone levels and have a certain nourishing effect on the skin.
15. Plant extracts: such as green tea extract, pomegranate extract, etc., have antioxidant and anti-inflammatory properties.

Anti Aging Raw Materials,Astaxanthin,Bakuchiol,Resveratrol,Superoxide Dismutase

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