CATDOLL : CATDOLL: What details and techniques should be paid attention to when raising flies?

What details and techniques should be paid attention to when raising flies

The use of cage nets to raise flies in ordinary houses has been a commonly used technology in China in recent years.

This technology requires heating facilities to be installed in the room. Otherwise, when the indoor temperature in autumn, winter and spring does not reach 27 degrees Celsius, the reproduction capacity of flies will be seriously reduced. When the room heating temperature is low, especially in the north, flies have to be pupated to survive the winter, which causes the fly breeding to be interrupted and the economic benefits to decline sharply.

Breeding flies in plastic greenhouses has successfully solved this problem. It allows flies to be produced continuously all year round, increasing breeding efficiency several times, making it a very promising technology.

Flies have the following requirements in terms of temperature, humidity and light:

The most suitable temperature for flies is 27℃～30℃. At 8～12℃, flies can move, but cannot mate or stand on food. They can only land on the ceiling and walls and do not like to move. At -5℃, they die in 3～5 days. Fly larvae require higher temperatures than adults. The most suitable temperature for their fastest development is 35℃. They stop moving at -1～2℃ and die at -5～6℃. When the temperature is too high (45～55℃), their growth rate is reduced by half compared with normal temperature.

Fly larvae require a food temperature of 30-35℃. In terms of humidity, adult flies require an indoor humidity of 55%-60%. When the humidity is too high, the legs and body of flies are easily wet and hinder their activities. The humidity required during the growth period of larvae is 65%-70%. Flies like to move around in bright places. The brighter the light, the more active they are. Artificially bred flies should be equipped with lighting in the room, with more than 10 hours of light per day.

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 feeding temperature is significantly increased

Without the need for special heating facilities, the temperature in the shed can be easily maintained at 27-30℃ in spring, summer and autumn. By rolling up and covering the straw curtains on the roof, the temperature increase and decrease measures are simple and easy, and almost no increase in breeding costs. Even in the cold winter, the temperature in the shed can reach an average of about 20℃.

2. Humidity is stable and easy to maintain

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

3. Adequate lighting

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 lighting maintenance simple and easy.

The area of ​​the greenhouse can be determined according to the size of the breeding. There are two ways to raise flies in a plastic greenhouse: one is to set up a three-dimensional gauze net in the greenhouse and raise flies in the net; the other is to raise flies in the greenhouse, stack a certain amount of straw and straw rope in the greenhouse, and regard each greenhouse as a cage. This method requires more investment than the previous method, occupies a large area, and has a low breeding density.

The breeding method of setting up gauze in the greenhouse generally builds a plastic greenhouse with a length of 20 meters, a width of 4 meters, a low wall height of 2 meters, and a high wall height of 3 meters, with 3 layers of gauze.

How to raise adult flies:

Breeding cage: The cage frame is 50×50×50 cm in size, with a gauze of the same size tied on it. In the center of one end of the gauze is a cloth sleeve with a diameter of about 20 cm and a length of 33 cm, which is used to take flies out and change food.

A feeding dish (7-9 cm in diameter) is filled with sugar for adult flies to eat, or a piece of water-soaked foam plastic is placed inside it to provide a water source for adult flies, which can also be used to attract eggs.

8,000 to 10,000 adult flies are raised in each cage. Whether it is newly collected adult flies or adult flies that have just emerged, sugar and water must be provided in time to prevent them from starving to death. Adult flies lay eggs 3 to 5 times in their lifetime, up to 10 times, and each time they lay 100 to 150 to 300 eggs.

Larvae rearing method:

First place the feed in the breeding box with a thickness of no more than 4 cm. Then use a worm shovel to slowly place the trapped fly eggs (one-day-old larvae) on the feed in the breeding box. The young maggots will slowly disperse and drill into the feed. When the larvae eat the feed, they generally eat from top to bottom. If the humidity or temperature in the box is high, or the feed is insufficient, or the insect density is too high, the young maggots will crawl out. The breeding staff should check at any time and take timely measures such as adding feed or lowering the temperature or humidity.