A new method for rapid propagation of fly maggots
Author: dzyzw article source: this site original hits: 6270 update time: February 20, 2008
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Some students need to domesticate Monopterus albus with fly maggots and earthworms after learning Monopterus albus culture technology in our company, and it takes a period of time, sometimes as long as several months, from the introduction of earthworms to the supply of earthworms to cultivate Monopterus albus. In some places where fly maggots are cultured, there are few dung sources, so it is difficult to produce them normally in a short time because they have to be fermented and repaired in maggot houses. The feed domesticated by Monopterus albus has not been settled, which has caused some students to be unable to breed Monopterus albus temporarily.
In order to help students develop eel breeding quickly and solve the problem of eel breeding as soon as possible, our company's farm quickly carried out the simple breeding technology experiment of fly maggots in July 2005, and summarized a set of fast and simple breeding methods of fly maggots. Using this method, there is no need to build a special maggot house, but corn flour, wheat bran, rice bran and so on. What Monopterus albus doesn't eat is transformed into fly maggots that Monopterus albus likes to eat. The specific method is as follows:
1, a training tool. General household plastic pots, plastic buckets and other containers can be used, as long as the wall is smooth and the depth of the pot is more than 25 cm.
2. Selection and preparation of egg attractant and collection and cultivation of fly eggs. If there is fresh chicken manure, it can be directly used as an egg suction device to collect flying eggs. The method is: put fresh chicken manure in a pot, sprinkle some water if it is too dry, and put it in a place where there are many flies in the wild, as far as possible in the shade. If the sun is too strong, use a shade to cover it properly. Generally, flies will pile up and lay eggs immediately after they are put in. Every afternoon, the egg sucker will be retrieved, and you can see pieces of flying eggs on the surface of chicken manure. You should immediately cover them with corn fertilizer or wheat bran mixed water to ensure that the eggs have a certain humidity. You can see a lot of maggots the next day, and you can raise them in separate pots. The feeding method is as follows: firstly, spread wheat bran or corn flour with a thickness of about 3-5cm in the basin, wet it with water, and then put the hatched maggots on the wheat bran or corn flour together with the egg sucker. After eating the egg sucker, maggots will quickly get into the feed below, and normally they will grow into big maggots in 3 days. The powder used to raise maggots can be fermented or directly used. Rice bran must be fermented to produce maggots, and rice bran must be of high quality. It is not effective to produce maggots completely with rice husk. The output of fly maggots can be increased by fermentation. Generally, 1 kg wheat bran can produce about 0.5 kg maggots, and 1 kg corn flour can produce 0.4 kg maggots. Adding pig blood and other wastes can increase the yield by 1 times. Powder mixed with water is easy to generate heat, so the thickness of powder in the basin should not be too thick to prevent fly maggots from dying of heat. The maggot basin should be placed in a place with high temperature (25-30℃) but slightly dark light.
3. Cage management of flies. Collecting fly eggs in this way will not only increase the number of wild flies, but also gradually decrease after long-term use. But in some densely populated places, in order to avoid causing people's antipathy, especially those who want to use red-headed flies as breeding people, flies can be kept in cages. See Appendix II on pages 34-36 of Book III of Monopterus albus Training Textbook for specific methods.
4. Separation of fly maggots. There are several ways to separate fly maggots. (1) large and small basin separation method. Put a smaller plastic basin in a larger one, wipe the four walls of the small basin with a wet cloth, and pour the maggots and materials into the small basin with a thickness of about 2 cm, so that the fly maggots will climb into the large basin along the basin wall. (2) Optical separation method. Put a sieve with a hole size that allows maggots to drill out on the plastic basin. First, mix the maggots with water, and then pour it into the sieve, preferably with a thickness of less than 2 cm. Put it in the sun, because 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 room, it can be poured into a maggot pond for automatic separation.
The waste after breeding maggots can be directly used for raising chickens, pigs and fish. And it's a good feed, which animals like very much.
Using this method, according to the calculation of single use of fly maggots to breed Monopterus albus, generally about 7 kg of fresh maggots can make Monopterus albus gain weight 1 kg, and the feed cost is not very high. Taking wheat bran as an example, 1 kg fermented wheat bran can produce 1 kg fresh maggots. Calculated by 0.7 yuan per kg of wheat bran, 0.4 kg of waste can be produced after producing maggots per kg of wheat bran, and the feed value is 0.24 yuan, so the cost of 1 kg of fresh maggots is about 0.46 yuan. It takes about 1 kg of pure maggots to make Monopterus albus gain weight. Moreover, Monopterus albus gains weight quickly and will not pollute the pool water, which is worth being widely used by students. When fresh maggots are fed with fish feed, the feed coefficient will be significantly reduced and the breeding cost will be lower.
Sichuan jianyang city Dazhong Breeding Company Technology Department July 2005