Detailed Explanation of Simple Outdoor Fly Maggot Farming Technology

Although outdoor fly maggot farming has lower yields than three-dimensional fly maggot farming and is not as stable as three-dimensional fly maggot farming, it has the advantages of low investment, quick results, no need to introduce breeding stock, no need to feed the flies, and low cost, making it the choice of most farmers at present.

The suitable season for simple outdoor fly maggot farming is generally from late April to mid-October each year. The construction site for the simple farming house should be chosen far from living areas, in a place with tree shade but some light, and with many wild flies. The area should be determined according to the yield you need; based on production experience, the average yield is about 0.5 kg per sq m. The farming house only needs to be able to keep out rain; a thatched hut, cement tile house, or bark house will all do. The house must be enclosed with 1 m high screen windows to prevent chickens, ducks, and other animals from entering. The farming pools should be simple cement pools, each with an area of 1.5 sq m to 2 sq m and a pool edge height of 20 cm. Preparation and placement of manure material: fresh pig manure (from pigs within 3 days of defecation) 70%, chicken manure (within one week) 30%; 100% fresh pig manure from slaughterhouses; pig manure 75%, okara 25%; chicken manure 50%, pig manure 25%, okara 25%. Mix the above manure materials, with a moisture content of 100%, pile the manure to a height of 20 cm, cover tightly with agricultural plastic film, and it can be used after 24 hours to 48 hours. Since this is outdoor farming, the manure material can also be used without fermentation and sent directly into the farming pools. Send the fermented manure material into the maggot house, and pile three strips in each pool, each strip 0.8 m long, 0.2 m wide, and 0.15 m high. The time for placing manure is from 4 pm to 5 pm every day. Preparation and placement of the egg-collecting material: because this is outdoors, there are more choices for the egg-collecting material. You can put dead fish and other items directly on the manure pile, or prepare it according to the following formula: based on 100 kg of manure material: wheat bran 1 kg, fish meal 2 liang, peanut bran 3 liang, water 1.5 kg. After mixing evenly, it can be placed on the manure pile. After placing the egg-collecting material, walking around the maggot pool is prohibited. Daily management: after the manure material is placed and the egg-collecting material is put on (for the first few days, it is best to use dead fish or fish innards to attract wild flies), in places with many wild flies, a large number of flies generally gather on the egg-collecting material to lay eggs within half an hour. At 9 pm, use a small amount of egg-collecting material to cover the fly egg clusters with a thin layer, so as to improve the hatching rate and reduce damage from ants and other insects. The fly egg clusters will all hatch the next morning. After 36 hours to 48 hours, the fly maggots will have crawled the previously neatly piled manure into a very scattered state. At 72 hours, the first fly maggots to grow larger begin to crawl out of the manure pile and automatically separate into the maggot collection bucket. Generally, by the seventh day, the fly maggots in the manure material have all separated cleanly. Suppose you have 14 maggot pools in total; you should add manure to two pools every day, and all will be full by the seventh day. On the eighth day, shovel out the residual manure from the first day after the fly maggots have finished emerging, and put in new manure material again. Production cycles in this way. At 10 am, collect the fly maggots from the maggot collection bucket, shovel out the residual manure after the fly maggots have finished emerging, and shovel the manure from other pools, which has been scattered by the crawling fly maggots and has blocked the pool edges, onto the middle of the manure pile, so as to avoid blockage that would make it impossible for the fly maggots to tell the route during separation. Simple outdoor fly maggot farming does not require feeding. However, in order to keep the flies around the maggot farming house and unwilling to leave, new manure material and egg-collecting material must be placed every day. The flies' food mainly comes from the manure material and egg-collecting material. Because outdoor fly maggots cannot be disinfected, the fly maggots produced will certainly carry many harmful bacteria. It is recommended to soak them in 7 parts per ten thousand potassium permanganate water for 5 minutes before feeding them to economic animals.