Introduction of New Varieties of Freshwater Breeding--Macrobrachium rosenbergii

Macrobrachium rosenbergii, also known as Malaysian prawns, is native to Southeast Asia. Macrobrachium nipponensis, which is known to China, belongs to the genus Macrobrachidae. Macrobrachium rosenbergii is one of the largest freshwater shrimps in the world. It has the advantages of good meat quality, fast growth, and easy culture. It is a high-quality breeding breed with promising future. China's introduction of Macrobrachium praecox in Guangdong province in 1976 was successful and has now been extended to all parts of the country. In addition to supplying the domestic market, commodity live shrimp also provides exports. With a protein content of 18.3% and a fat content of only 1.97%, Macrobrachium rosenbergii is a high-protein, low-fat luxury aquatic product. With a large individual, the meat yield is high, the meat is refreshing, and the taste is delicious. The market at home and abroad is selling well. The price is quite high, and the price per kilogram of live shrimp is equivalent to the price of 5 to 10 kilograms of four major fish. In natural waters, the largest individual body of Macrobrachium rosenbergii is 40 centimeters long and weighs 600 grams. In stocking in ponds, 20,000 shrimps can be stocked per acre pond, reared for 4 to 5 months, average body length is 9 to 10 centimeters, weight is 20 to 30 grams, that is, about 40 pigs per kilogram, can be listed, and the largest Individuals up to 160 grams. The average shrimp production per acre pond is 150-200 kg. Macrobrachium rosenbergii is a benthic shrimp and prefers to live in a fresh, watery environment. It feeds at night. Macrobrachium rosenbergii is native to the tropical coast, warm and chilly, and its optimum temperature range is 18°C ​​to 32°C. Every year from April to November is the ideal time for shrimp farming. In the water temperature below 14 °C for several days will die. Macrobrachium rosenbergii also requires fresh water and rich dissolved oxygen. The technical requirements for the breeding of Macrobrachium rosenbergii in ponds are as follows: disinfection of clear ponds prior to stocking of shrimps, planting some aquatic plants at the bottom of the pond, and fertilizing water quality; strengthening management after stocking, rational feeding, frequent water changes, and prevention of disease; Shallow water fishing is required. Hard-shelled shrimps and soft-shelled shrimps should be kept separately so that live shrimp can be listed. The growth of larvae of Macrobrachium rosenbergii needs to live in seawater with lower temperature. After the larvae become metamorphosed into juvenile shrimps, they need to go through the desalination stage, so that the shrimp seedlings are suitable for stocking in freshwater ponds. The technical requirements for seedling production are relatively high. Guangdong, Guangxi, Zhejiang, Jiangsu, Shanghai and other provinces and cities have already built a number of factory-built Macrobrachium sulphureus nurseries, organized the production of shrimps, and provision of stocking throughout the country.

Nutrient supplements

What is Nutrient supplements?

Nutritional supplements are preparations used to supplement nutrients that may be lacking in the body's daily diet. These formulations may be single or a combination of multiple nutrients, including but not limited to the following ingredients:
- Protein (e.g. protein powder)
- Fish oil (contains omega-3 fatty acids such as DHA)
- Various vitamins (such as vitamin A, B vitamins, vitamin C, vitamin D, vitamin E, etc.)
- Minerals (e.g. calcium, iron, zinc, selenium, etc.)
- Dietary fiber
- Other specific nutrients, such as Amino Acids, enzymes, probiotics, plant extracts, etc
The purpose of nutritional supplements is to meet the nutritional deficiencies that individuals may have due to special needs, dietary habits, digestive and absorption problems, health conditions (such as disease, pregnancy, aging, etc.) or other reasons. They are usually available in the form of tablets, capsules, oral liquids, powders, etc.
When choosing a nutritional supplement, one should consider an individual's physical condition, diet, and possible side effects. Although nutritional supplements can provide additional nutrients, it does not mean that they are a substitute for a balanced diet. The best strategy is usually to get most of your nutrients through a varied diet and use nutritional supplements when necessary under the guidance of a medical or professional. In addition, excessive consumption of certain nutritional supplements may also pose health risks, so it is recommended to consult a professional before use.

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Xi'an Day Natural Inc. , https://www.dayqc.com