Simple outdoor maggot culture technique
Although the yield 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 effect, no introduction, no feeding of flies and low cost, which is the choice of most farmers at present.
The suitable season for outdoor simple maggot breeding is generally from the end of April to the middle of October every year. The construction site of the simple breeding house is located far away from the living area, with shade but a certain amount of light, and where there are more wild flies. The area should be determined according to the output you need, according to 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 prevent animals such as chickens and ducks from entering. The aquaculture pond requires a simple cement pool, each with an area of 1.5 square meters ~ 2 square meters and a pool edge of 20 centimeters. The preparation and storage of dung is 70% of fresh pig manure (within 3 days of pig drop), 30% of chicken manure (within a week), 100% of fresh pig manure of slaughterhouse, 75% of pig manure, 25% of bean curd residue, 50% of chicken manure, 25% of pig manure and 25% of bean curd dregs. 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 from 4: 00 to 5: 00 every afternoon. The preparation and placement of egg collectors because they are outdoors, egg collectors can have more choices. Dead fish can be placed directly on the dung pile, or they can be prepared according to the following formula: 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 the egg collection is placed, it is forbidden to walk 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 with 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 the hatching rate and reduce the damage of insects such as ants. The fly eggs will all hatch in the next morning. In 36 to 48 hours, the maggots have cluttered the previously neatly stacked dung pile. In 72 hours, the maggots that first grew up began to climb out of the dung pile and automatically separate into the maggot bucket. Generally, on the seventh day, all the maggots in the feces have been separated. 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. Such a cycle of production. At 10:00 in the morning, we collect maggots from the maggot bucket, shovel out the remnants of the maggots, and put the other pools 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 confusion in the way when the maggots are separated. Simple outdoor breeding of maggots does not need to be fed. But in order to keep the flies around the maggot house, new feces and egg collections must be put every day, and flies' food mainly comes from feces and egg collections. Outdoor maggots cannot be disinfected, so the cultured maggots must contain a lot of harmful bacteria. It is recommended to soak them in 7/10000 potassium permanganate water for 5 minutes before feeding economic animals.
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