CATDOLL : CATDOLL: How to quickly raise fly maggots, mainly for feed, requiring simple operation, fast speed and high yield

How to quickly raise fly maggots, mainly for feed, requiring simple operation, fast speed and high yield

The specific method is as follows:

1. Cultivation tools: General household plastic basins, plastic buckets and other containers can be used, the 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 cage the flies. 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. Using pure maggots to make the yellow eel gain 1 catty costs about 3.3 yuan. And the yellow eel gains weight quickly and will not pollute the pond water, which is worthy of widespread use by many students. Using fresh maggots and fish feed for feeding will significantly reduce the feed coefficient and lower the breeding cost.

What temperature is required for maggot breeding?

The temperature should be controlled at 24-30℃.

According to the phototaxis of adult flies and the photophobia of larvae (maggots), the place for raising adult flies should be bright to facilitate egg laying; the place for raising larvae should be dim to facilitate larval growth. Therefore, two places, one bright and one dark, should be prepared for raising flies and breeding maggots. The place should be equipped with window screens and door curtains to prevent other animals from eating. If you raise flies outdoors, pay attention to wind and rain protection and direct sunlight.

Relationship between temperature and ecological growth rate

Temperature 16℃ 18℃ 20℃ 25℃ 30℃

Lowest Highest Lowest Highest Lowest Highest Lowest Highest Lowest Highest

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Egg stage source (hours) 36 40 27 30 20 30 12 20 8 12

Larval stage (days) 11 26 10 14 8 10 7 8 5 6

Pupa stage (days) 18 21 12 15 10 11 7 9 4 5

Egg to adult (days) 40 48 23 30 18 22 14 17 9 11

Average egg to adult 44.8 26.7 20.5 16.1 10.4

(number of days) ___________________________________________________

As can be seen from the table, at 16°C, the egg stage, larval stage, and pupal stage have a longer growth period, which is 40-48 days, with an average of 44.8 days. At 30°C, the growth period is shorter, which is 9-11 days, with an average of 10.4 days. It can be seen that the relationship between temperature and the ecological growth rate of flies is very close. Controlling the temperature is a key measure to increase the yield of fly maggots. In particular, the temperature in the larval stage is more important, which directly affects the growth and maturity time of the larvae, involves the yield and maturity of maggots, and also has a certain impact on the quality of protein. Therefore, it is necessary to control the breeding temperature.

When breeding fly maggots at a temperature below 30°C all year round, it is best to build a simple greenhouse and breed them indoors. In spring and autumn, the room can be slightly heated to reach the appropriate temperature for breeding fly maggots, which is beneficial to increase the yield of fly maggots.