CATDOLL : CATDOLL: Which one is more suitable for fish farming, mealworms or fly maggots?

1. Which one is more suitable for fish farming, mealworms or fly maggots?

Mealworms are better, as they are nutritious, clean, sanitary, not disgusting, and available in all seasons. This is better than maggots.

2. [Help] Yellow catfish breeding

This fish feeds at night. So you need to feed it once at night and pay attention to preventing and treating viral diseases. Once infected with a viral disease, there is no medicine to treat it.

3. Can duck manure with maggots be fed to fish?

Therefore, fish fed with fly maggots grow faster. But the price of fresh fly maggots in our area is about 5 yuan per catty. It would be a waste to use fly maggots. The meat quality is better than that of feed. If the fish is fed with fly maggots, the price is relatively low. Moreover, the nutrition and digestion and absorption of fly maggots are much better than that of feed.

4. How to raise maggots? I hope experts can help answer this question.

There are maggots only when there are flies. To raise maggots, you must first raise flies. Flies have a very strong reproductive capacity. A female fly lays 100 to 200 eggs each time. A pair of flies can reproduce 10 to 20 generations in a year. In 4 months, 266 billion flies can be produced, and the cumulative pure protein is more than 600 tons, which is unmatched by other methods of producing animal protein. 1. Design of fly house. Breeding flies should be raised indoors. 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 an enclosed corridor in the house. The corridor is entered 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 to 30 degrees Celsius, with a minimum of no less than 15 degrees Celsius and a maximum of no more than 35 degrees Celsius. 2. Main equipment. There are fly cages, food trays, egg-laying trays, and eclosion trays. Fly cages can be made into 60-80 cm cubes 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. Use black cloth to make a sleeve at the opening to prevent flies from escaping. Each cage is equipped with 3-4 medium trays for flies to lick the food. Put a small water cup in each cage, and put a sponge pad in the cup. Put an egg-laying primer 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. Feeding and management. ① Feed for breeding flies: grind the 4-day-old maggots cultured in sterile culture, 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 for better results. ③ Stocking density: 50,000 to 80,000 flies can be raised per cubic meter of fly cage, usually 10,000 to 20,000. ④ Management method: When the male and female flies are found to have mated, they should be 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. The most eggs are laid by the flies between 8 and 15 o'clock every day, and the egg-laying tray should be replaced in time. ⑤ Overwintering seed preservation: The fly pupae that have been selected and removed from the inferior ones can be stored in a container with appropriate temperature, humidity and loose manure, and placed indoors and covered with straw for heat preservation and moisture retention. Main facilities and management for maggot breeding 1. Maggot breeding facilities. At present, maggot breeding is mainly carried out in three forms, namely, maggot breeding room, vertical maggot rack and maggot breeding basin. Maggot breeding room can be semi-underground indoors. The bottom and wall of the pool should be cemented for waterproofing to prevent maggots from climbing up. It is best to stick a layer of 3 cm thick light glass on the four walls. A small 5 to 8 cm wide ditch should also be set around the pool to prevent ants and adjust the humidity. Room temperature should not exceed 35℃. Vertical maggot racks can be welded with steel bars or made of cement into three-dimensional or stepped styles. The height of the maggot basin should be 10-20 cm (the basin surface should be smooth) and the inner material should be 5-8 cm. 2. Preparation of breeding materials. 50%-60% fresh chicken manure or pig manure, 35%-45% bran, and 5% coarse bran. After the three materials are evenly mixed, they are mixed into a breeding material with a water content of about 65%, and the pH value is adjusted to 6.5-7. 3. Inoculation and hatching. Inoculate 1 gram of fly eggs per kilogram of breeding material, and evenly sprinkle it on the surface of the breeding material in the maggot basin. After 8-12 hours, they will hatch into maggots. Keep the temperature of the breeding material stable and no water should be accumulated. 4. Separation and collection. Maggots are collected when they turn yellow after 5 days. Taking advantage of the maggots' fear of light, place the maggot breeding basin under strong light, use a dung shovel to move the maggots from the bottom, and finally remove the nutrients on the upper layer and sieve them out with a 10-16 mesh sieve. The maggots can be used fresh after washing or processed for later use. 5. Usage of fly maggots. In addition to feeding livestock and poultry directly, the remaining fresh maggots produced daily can be dried in an oven at 200-250℃ for 15-20 minutes, and then ground into maggot powder for winter ingredients. The general addition amount is about 5%.