CATDOLL : CATDOLL: How much is the profit of fly farming? (How much is the profit of fly farming? Zhihu)

1. What are the correct methods and precautions for breeding flies?

1. Design of fly house. Flies should be raised indoors, and it is best to build a new fly house in a semi-basement. The breeding room of the fly house does not open directly to the outside. There is a closed corridor in the house, which leads to the corridor from the back door of the studio. Black curtains should be hung on the door to prevent flies from escaping. Screens and heating equipment should be installed on the windows. The room temperature should be kept at 20-30℃, with a minimum of no less than 15℃ and a maximum of no more than 35℃.

2. Main equipment for flies. There are fly cages, food trays, egg-laying trays, and eclosion trays. The fly cage can be made into a 60-80 cm cube with thick iron wire, covered with white gauze, with an operation opening on one side. The size of the opening is suitable for placing food trays and egg trays. A sleeve is made of black cloth at the opening to prevent flies from escaping. Each food tray is equipped with 3-4 medium trays for flies to lick the feed. A small water cup is placed in each cage, and a sponge pad is placed in the cup. An egg-laying primer is placed in the egg-laying tray to induce female flies to lay eggs. The eclosion tray is used to hold the quickly eclosing fly pupae during the generation change.

3. Fly breeding and management. ① Breeding fly feed: grind the 4-day-old maggots cultured aseptically, add 60% brown sugar, 2% yeast powder and appropriate amount of water to make a paste, and add 0.1% sodium benzoate. ② Egg-laying primer: take bran and add 0.03% ammonium bicarbonate and mix well, or use chicken feces is better. ③ Stocking density: 50,000 to 80,000 flies per cubic meter of fly cage, generally 10,000 to 20,000. ④ Management method: When the breeding flies are found to be mating, they are placed in the egg-laying tray 2 days later. The egg-laying primer should be loose and evenly spread, with a thickness of 1 to 2 cm. Breeding flies lay the most eggs between 8 and 15 o'clock every day, and the egg-laying tray should be replaced in time. ⑤ Winter seed preservation: The fly pupae that have been selected and removed from the inferior can be stored in a container with appropriate temperature, humidity and loose feces, and placed indoors and covered with straw to keep warm and moist.

Key points for breeding and reproduction of flies

The use of plastic greenhouses to raise flies can easily meet these characteristic requirements of flies during reproduction, and its advantages are as follows:

1. The breeding temperature is significantly increased. There is no need for special heating facilities for flies. In spring, summer and autumn, the temperature in the shed can be easily maintained at 27-30℃. By rolling up and covering the straw curtains on the roof, the temperature increase and decrease measures are simple and easy, and the breeding cost is almost not increased. Even in the cold winter, the temperature in the shed can reach an average of about 20℃.

2. Stable humidity is easy to maintain. To raise flies in ordinary houses, you need to constantly sprinkle water on the ground to maintain a certain humidity. In the plastic greenhouse, because of its good airtightness and the ground not hardened with cement, there is no need to sprinkle water or specially adjust the humidity.

3. Sufficient light In the plastic greenhouse, lift the straw curtain on the roof, and the sunlight filtered by the plastic film will illuminate the entire greenhouse, making it simple and easy to maintain light.

2. Why do some people raise flies?

Flies are raised to feed chickens and ducks. Fly larvae, also known as maggots, are the best feed for chickens and ducks. Maggots contain a lot of protein and are top-quality feed. Now many people raise flies to raise meat maggots, which are healthy and clean, and also to sell to people for eating. Fried meat maggots are sterile and healthy. They are all raised to make money.

3. How many flies can be raised in one square meter? How many maggots will be produced?

Fly farming, 80,000 to 100,000 flies per cubic meter, and 10,000 flies can produce 1 to 2 kilograms of fresh maggots per day

4. Is it profitable to raise flies?

The benefits are considerable!!

Since ancient times, fly maggot protein food has always been a hot topic of discussion. As early as the Ming and Qing Dynasties, the famous Zhong Jiefu Pharmacy in Xitang Town, Jiashan County, Zhejiang Province, used fly maggots to make the famous Eight Immortals Cake, which has been passed down to this day (now called Eight Treasures Cake). It has become a local food therapy product suitable for both the young and the old, with a unique flavor and both medicinal and edible. It is used to entertain guests and give gifts to relatives and friends during festivals. After years of careful research, American scientist Lind first proposed in 1919 that flies can be used to turn decay into magic and convert human and animal feces into animal protein. In the 1960s, the Soviet Union and North Korea and other countries successively established fly maggot factories specializing in the production of animal protein nutritional powder. In Paris, the capital of France, there is a famous insect restaurant that specializes in serving fried flies and other famous dishes. North American Indians have long cooked flies into the unique "Guchabi" cake, which is mouth-watering. In Mexico, the "hometown of insect food", fly eggs are processed into delicious and fragrant "caviar". According to a report by Swedish media in 1982, a popular dish called Housefly Lobster was first introduced in a hotel called Fokfu in the capital Stockholm. It is made by mixing 5%t fly maggot powder into flour, adding lobster and other ingredients, and deep-frying it in a frying pan to make a high-end delicacy with color, aroma and taste. It is delicious and refreshing, and has become a long-lasting signature dish of this hotel. The world-renowned American Coca-Cola Company heard the news and used 3% fly maggot protein powder. After baking and other processes, it was cooked into a unique infant biscuit, which was praised by the media as "the best food for babies". It is said that this fly maggot powder biscuit has the effect of enhancing the body's immune function and preventing colds. It is also suitable for the elderly with declining digestive function. In recent years, a new health food "Old People's Crisp" developed by a Japanese food company is also cooked with nutritious and well-known fly maggot protein powder as the main ingredient. In London, the capital of the United Kingdom, some famous restaurants have launched an innovative dish - lion snake salad, which is made by mixing fly maggot protein powder with high-grade flour, mixing it into salad, and frying it in warm oil. As soon as it was launched on the market, it was highly praised by gourmets. Other hotels are not far behind. After cooking the sterile fly maggot protein powder, they use the soy product "Qian Zhang" as a coating, add Western seasonings such as beef curry, and wrap it into a Chinese-style "baiye bun". It has become a delicious snack that people are eager to taste. In the past decade, the technology of extracting fly maggot protein has been improved day by day, and the benefits are remarkable. This new type of protein can be widely used to make pastries, nutritional supplements and additives for fortified foods, becoming an important raw material for the food industry. Germany's insect protein purification project has been put into large-scale production. The nutrients such as protein, amino acids, and fat extracted from fly maggots are used to make new health foods, which have been recognized and approved by food hygiene departments in many countries.

Not long ago, more than 80 entomologists in my country gathered at the National Resource Insect Industrialization Development Seminar to discuss the prospects of insect industrialization, including flies. During the meeting, my country's first large-scale "insect banquet" with a unique style was set up. More than ten kinds of insects that were once daunting, such as locusts, ants, and red bollworms, have been transformed into a dazzling array of delicious dishes after careful planning by scientific researchers and processing by chefs. Among them, the exquisite dishes and drinks cooked and brewed with fly maggots as the main ingredients, such as Yusun Ma Fruit, Engineering Bread, Narcissus Active Nutrition Wine, and Narcissus Active Nutrition Drink, have opened the eyes of viewers and tasters and have been praised.

There are so many of them. Authoritative sources predict that as the leader of insect food, especially fly maggots, will rise rapidly and become one of the important resources of human protein food in the 21st century, with huge development potential and promising market prospects. No wonder the Insect Protein Research Institute of Shandong University has invested 7 million yuan to build a large fly maggot factory with a monthly output of 2 tons of dried fly maggots, specializing in the production of nutritional protein powder, deacetylated chitin and maggot oil and other rare products in the market.

According to British and American medical literature, fly maggot therapy can be used to treat seriously infected wounds. The main arguments are: First, fly maggot therapy can avoid the disadvantages of antibiotic treatment that produces antibiotic properties. This treatment has no adverse reactions, does not require anesthesia, and does not harm healthy tissues at the wound. It is recommended to use fly maggots to treat necrotic wounds at an early stage. Second, fly maggots can treat infections caused by antibiotic-resistant strains. Fly maggots can eliminate bacteria in the wound, which is believed to be related to the fact that fly maggots can produce antibiotic substances and change the pH value of the wound when engulfing bacteria. Third, clinical practice has shown that fly maggots have a good effect on bedsores, diabetes, foot ulcers and postoperative wound infections. Fourth, place sterile fly maggots on the wound and cover it with a dressing to prevent escape. The fly maggots will engulf the necrotic and infected tissues at the wound. Remove the dressing after 1-3 days. At this time, the fly maggots have matured and will not continue to harm healthy tissues.

It can be said that flies are the real antibacterial champions in the insect world. They live in rotten and filthy places for their entire lives, pushing billions of bacteria and viruses but never get sick. One of the secrets is that they contain unique "antibacterial active proteins" in their bodies. Only one ten-thousandth of the concentration of this protein is enough to kill all the bacteria in the human body. Its bactericidal factor is thousands of times higher than that of penicillin! This active protein can also stimulate the secretion of human growth factor, which is conducive to wound healing. This provides new clues for humans to develop new and efficient antibiotics. Scientists imagine that if the precious antibacterial active proteins can be extracted from flies and transferred to humans, an indestructible and powerful defense line that can resist any disease can be built in the human body. In addition, the hemolymph of flies contains anti-cancer ingredients such as lectins, and the maggots contain "fecal alkali-producing bacteria", which can inhibit various bacteria of skin abscesses and promote the formation of new epidermis and wound healing. According to measurements, flies also contain 2-%-4% phospholipids, which have the functions of protecting cell membranes, lowering blood lipids, and preventing cardiovascular diseases.

In 1997, the Shanghai Science and Technology News reported that a group of experts from Wuhan University and Huazhong Agricultural University, in cooperation with American scholars, extracted chitosan, Linuo Vitality, which is highly promising and known as the "sixth essential life element for the human body", from the maggots of "engineered flies" that are "immune to all kinds of poisons and diseases". They also extracted a new type of nutritious tonic product, Linuo Jianzhisu, from the lymphatic blood of fly maggots. It has now entered commercial production.

According to a report by Jinwanbao on November 22, 2000, after two years of intensive exploration, researchers from the School of Life Sciences of Nankai University and the School of Materials Science of Tianjin University successfully isolated a series of antimicrobial peptides from the maggot plasma proteins in flies, which are efficient enough to kill a variety of pathogens. The researchers placed the antimicrobial peptides in a bacterial culture dish, and after 5-6 hours, a clear antibacterial circle was formed, and all the bacteria in the circle died. Experts confirmed that antimicrobial peptides have a power in killing bacteria that is unmatched by current medical antibiotics. Experts predict that by the 21st century, flies are expected to become the "nemesis" of a variety of pathogens.

In summary, flies and their larvae have a wide range of uses in medical care, have great potential, and have broad development prospects.

5. Is it really profitable to raise fly maggots?

I have also seen the person you mentioned. He was once broadcast on CCTV. I personally think it is true. But to be honest, the development of this industry has reached a bottleneck period. Some superficial resources have long been exhausted, such as using fly maggots as feed. As long as you have some knowledge, you can learn it. The market space is not large. Some deep technologies are still being developed, such as the extraction of chitin from fly egg shells, etc., but the research and development of these extraction technologies requires a lot of investment, so it is reasonable for experts to say that it is not suitable to raise maggots now.

As for Professor Hu Jinlin's "Flies, Breeding and Utilization" that you mentioned, it is indeed not available on the Internet, but what is certain is that fly breeding does exist.