CATDOLL : CATDOLL: Breeding technology of fly maggots (to be detailed)

1. Breeding technology of fly maggots (to be detailed)

After learning the eel farming technology in our company, some trainees found that it takes a while, sometimes several months, to introduce earthworms to feed the eels, as maggots and earthworms are needed for eel farming. In some places, there is little source of manure for maggot farming, and it has to go through fermentation and repair maggot houses, making it difficult to produce normally in a short period of time. There is no source of feed for the domesticated eels, so some trainees cannot carry out eel farming for a while.

In order to help students quickly start eel farming and solve the problem of eel taming food as soon as possible, our company's farm carried out experiments on simple fly maggot farming technology in July 2005 and summarized a set of quick and simple methods for breeding fly maggots. Using this method, there is no need to build a special maggot breeding room, and corn flour, wheat bran, rice bran, etc. that eels do not eat can be converted into fly maggots that eels like to eat. The specific method is as follows:

1. Cultivation tools: General household plastic basins, plastic buckets and other containers can be used, the four walls must be relatively smooth, and the depth of the basin must be greater than 25 cm.

2. Selection and preparation of egg-sucking materials and collection and cultivation of fly eggs. If there is fresh chicken manure, you can directly use fresh chicken manure as egg-sucking materials to collect fly eggs. The method is: put fresh chicken manure in a basin. If the chicken manure is too dry, sprinkle a little water on it. Put it in a place where there are many flies in the wild. It should be placed in a cool place as much as possible. If the sun is too strong, use shade to shade it. Generally, flies will gather and lay eggs immediately after putting it in. Take back the egg-sucking materials every afternoon. You can see that there are clumps of fly eggs on the surface of the chicken manure. You should immediately cover it with corn manure or wheat bran mixed with water to ensure that the egg masses have a certain humidity. You can see many small maggots the next day, and you can raise them in separate basins. The method of raising maggots is to first spread about 3-5 cm thick wheat bran or corn flour mixed with water in the basin, and then put the hatched maggots together with the egg sucking material on the wheat bran or corn flour. After eating the egg sucking material, the maggots will quickly drill into the feed below. Under normal circumstances, they can grow into large maggots in 3 days. The powder used to raise maggots can be fermented or used directly. If rice bran is used to raise maggots, it must be fermented, and the rice bran must be of good quality. The "rice bran" that is completely rice husk is not effective in raising maggots. Fermentation can increase the yield of fly maggots. Generally, 1 catties of wheat bran can produce about 0.5 catties of maggots, and 1 catties of corn flour can produce 0.4 catties of maggots. The yield can be increased by about 1 times by adding waste such as pig blood. The powder mixed with water is easy to heat up, so the thickness of the powder in the basin should not be too thick to prevent the fly maggots from dying from heat. The maggot breeding pot should be placed in a place with higher temperature (25-30℃) but slightly dim light.

3. Cage management of flies. Using this method to collect fly eggs will not only not increase the number of wild flies, but also gradually reduce the number of flies in the wild if used for a long time. However, in some densely populated areas, in order to avoid causing people's disgust, especially if you want to use red-headed flies for breeding, you can keep the flies in cages. The specific method can be found in Appendix II, pages 34-36 of the third volume of the eel training materials.

4. Separation of fly maggots. There are several methods for separating fly maggots. (1) Separation between large and small basins. Place a smaller plastic basin inside a larger basin, wet the four walls of the small basin with a damp cloth, pour the maggots and feed into the small basin to a thickness of about 2 cm, and the fly maggots will crawl along the basin wall into the large basin. (2) Photo separation. Place a sieve with holes large enough for the maggots to drill through on a plastic basin, wet the maggot feed with water, and then pour it into the sieve. The thickness should not exceed 2 cm. Place it in the sun. Since the fly maggots are afraid of light, they will try their best to drill down and fall into the basin below. (3) If there is a maggot breeding room, pour it into the maggot breeding pool and let it separate automatically.

The waste from breeding fly maggots can be directly used for raising chickens, pigs, fish, etc. It is still a very good feed, and animals love to eat it.

Using this method, based on the calculation of using only fly maggots to breed yellow eels, generally about 7 catties of fresh maggots can make the yellow eel gain 1 catty, and the feed cost is not very high. Taking wheat bran as an example, 1 catty of fermented wheat bran can produce 1 catty of fresh maggots. Calculated at 0.7 yuan per catty of wheat bran, each catty of wheat bran can produce 0.4 catties of waste after producing fly maggots, which is worth 0.24 yuan as feed. The cost of 1 catty of fresh maggots is about 0.46 yuan, and it costs about 3.3 yuan to use pure maggots to make the yellow eel gain 1 catty. In addition, the yellow eel gains weight quickly and will not pollute the pond water, which is worthy of widespread use by many students. When fresh maggots are added to fish feed for feeding, the feed coefficient will be significantly reduced, and the breeding cost will be lower.

2. Can maggots be farmed on a large scale and automatically?

In theory, fly maggots can be farmed automatically, but there are no real examples yet.

This theory is not a basic theoretical viewpoint, but an applied technical theoretical viewpoint, so it is completely feasible. There are no cases at present because there are problems with the outlet of the product. At present, it is all raised by small units for their own needs, and has not been sold on the market as feed or for other purposes.

3. Do carp eat fly maggots? Can carp raised in ponds be scaled up?

Eat! But why do we need to raise carp? This guy likes to muddy the water when he eats! Not only does it waste feed, but other fish can't eat it either! There is no large-scale breeding now! Generally, it accounts for only 10% of the total pond breeding volume! And the selling price is not high! If there are maggots, carnivorous fish should be bred, such as catfish, black carp, snakehead, soft-shelled turtle, yellow eel, loach, etc.! I use maggots to breed snakehead! The selling price is high, and of course the profit is also high!