Analysis on how to culture maggots in the outer plane of the room

1. Selection of breeding site. In the place away from the house and near the livestock house, choose a flat, rammed, high above the ground, as the training surface. The area of each culture surface is about 4 square meters. The number of culture noodles is determined according to the feeding scale.

two。 Scaffold making. Use iron or wood to make a scaffold that can cover the culture surface, with a high 50cm, and paste a layer of Kraft paper on the top and both sides of the scaffold to block direct sunlight. Then around the bracket is a layer of plastic film (which can be lifted on both sides of the east and west) to make a cover for heat preservation and moisture preservation. The scaffold is as large as the culture surface, is movable, and can be removed at any time, making it easy to feed and pick up maggots.

3. Laying dung. With fresh chicken manure, pig manure, press 1 ∶ 1 to mix well and then spread out, then spread the dung loosely and evenly on the culture surface with thickness 5~10cm, thin when hot, thick when cold, and finally move the support to the culture surface to cover the dung layer, lift the plastic sheets on both sides of the east and west, and put several dead rats or 0.5~1kg animal carcass, viscera, fish intestines, etc., into the dung surface at the entrance to attract flies to come in to lay eggs.

Within 24 hours after laying dung, spray water several times according to humidity requirements to keep the surface of the dung layer moist, so as to facilitate fly spawning and fly eggs hatching. If you spray water with chicken dung; if you use pig manure alone, you can add 0.03% ammonia or ammonium bicarbonate to the water to attract flies to lay eggs. After spawning in the dung layer for 1 day and night, the fly can put down the plastic sheet on the east and west sides of the bracket and press it around to maintain the temperature in the cover, so that the fly eggs can hatch in the dung layer.

4. Breeding maggots. Maggots can be hatched from fly eggs after 8 to 12 hours at 25 ℃. After the maggots are hatched, they should still spray water to the fecal layer according to water evaporation, but there should be no stagnant water in the fecal layer to prevent maggots from suffocating. The plastic sheeting on the east and west sides of the opening and closing bracket is used to adjust the temperature in the cover, which is generally 20-25 ℃. In the later stage of maggot growth, the humidity of the fecal layer should be reduced, and it is better to be wet inside and dry outside.

5. Take maggots and use them. Maggots can be used after hatching for 6 or 9 days. Because maggots are afraid of direct sunlight, you can remove the bracket when taking maggots and let the sun shine on the dung layer. The maggots drill to the bottom of the dung layer, shovel the surface dung, then strip away the dung and maggots from the bottom, and put the chickens in and peck at them. This is the easiest way to collect maggots. After eating maggots, the chicken will gather the dung into a pile, add 50% fresh dung and mix it evenly, water it flat, and then re-breed the maggots. This method is based on 500g maggots per square meter, each chicken needs 20g per day, and the maggots produced in one cycle in a culture area of 4 square meters can be fed by 100 chickens for one day.