Introduction to the method of simple outdoor maggot culture

Although the output of outdoor maggot culture is lower than that of three-dimensional maggot culture, and it is not as stable as three-dimensional maggot culture, it has the advantages of less investment, quick results, no introduction, no feeding of flies, low cost and so on, which is the choice of most farmers now.

The season for maggot farming is usually from the end of April to the middle of October every year.

The production of simple breeding house

The garden chooses the place far away from the survival area, where there is shade but positive light, and there are more wild flies. The area should be determined according to the output required by the body. according to the production experience, the average output per square meter is about 0.5 kg. As long as the breeding house can cover the rain, thatched houses, cement tile houses, bark houses are all fine. The house should be surrounded by 1-meter-high screen windows to guard against the entry of chickens, ducks and other animals. Aquaculture ponds are required to accept simple cement ponds, each with an area of 1.5 square meters ~ 2 square meters and a pool edge of 20 centimeters.

Preparation and arrangement of manure

Strange pig manure (within 3 days) 70%, chicken manure (within a week) 30%; strange pig manure 100%; pig manure 75%, bean curd residue 25%; chicken manure 50%, pig manure 25%, bean curd residue 25%. Mix the above dung with a water content of 100%, pile the dung into a height of 20 cm, cover it strictly with agricultural film, and use it after 24 hours to 48 hours. Because it is raised outdoors, the manure can be sent directly to the culture pond without fermentation. Send the fermented manure to the maggot room and stack three strips in each pool, each 0.8 meters long, 0.2 meters wide and 0.15 meters high. The time of releasing feces is 4: 00 ~ 5: 00 in the afternoon every day.

Preparation and arrangement of egg collectors

Because there are more choices for collecting eggs outdoors, dead fish can be placed directly on the dung pile, or they can be prepared according to the following formula: 100 kg of dung: 1 kg of wheat bran, 2 taels of fish meal, 3 taels of peanut bran and 1.5 kg of water. Mix well and put it on the dunghill. After putting on the egg collection, refrain from walking around the maggot pool.

After putting away the feces and collecting eggs (preferably the internal organs of dead fish or fish in the first few days to attract wild flies), a large number of flies lay eggs within half an hour in places where there are more wild flies. At 9 p.m., a thin layer of eggs laid by flies should be covered with a small amount of egg collectors to improve hatching rate and eliminate damage caused by insects such as ants. The fly eggs will all hatch the next morning. In 36 to 48 hours, the maggots have scattered the previously uniform pile of dung. The maggots that have grown up in 72 hours begin to climb out of the dunghill and evacuate automatically. Lost in the maggot bucket, all the maggots normally guessed in the feces on the seventh day have been evacuated.

Suppose you have a total of 14 maggot ponds. You should fill two ponds every day, fill them all on the seventh day, shovel out the maggots on the eighth day, and put new dung into them. Circular production.

At 10:00 in the morning, maggots are collected from the maggot bucket, the remnants of the maggots are shoveled out, and the other pools are loosely crawled by maggots and the dung has been piled up into the middle of the dung pile, so as not to cause blockage and the maggots can't know the way when they evacuate.

It is not necessary to raise maggots outdoors. But in order to make the flies stop around the maggot house, new feces and egg collections must be put every day. The food tension of flies originates from feces and egg collections.

Outdoor maggots cannot be disinfected, so the cultured maggots must contain a lot of harmful bacteria, so it is best to soak them in 7/10000 potassium permanganate water for 5 minutes before feeding economic animals.