First, the prerequisite for fly breeding
Natural conditions: Temperature is one of the prerequisites for maggot farming. Below 25°C, the fly stops breeding or enters a hibernating state and does not feed. Plastic sheds can only be cultivated seasonally. In late autumn, severe winter and early spring, the temperature is less than required. At this time, shed farming is futile.
Feeds for fly maggots: Feeds for productive breeding of fly maggots must be cheap waste, preferably chicken feces produced by specialized chicken farmers. According to 3 kg of chicken manure and 1 kg of pupae, the amount of feed required for productive aquaculture is large. If you buy soy sauce scum or other waste, the cost is too high and the result is often not worth the candle.
Self-consumed capacity: productive breeding fly maggot products must have self-consumed ability. Currently, there are not many purchasing departments for fly larvae products, and there are not many deep processing units for fly larvae and oyster shells. Therefore, the production bred larvae must have their own special households for poultry and fish breeding, which can be used for self-production and consumption reduction. Feed costs for poultry and fish increase economic efficiency.
Second, site selection for breeding sites
Breeding of fly maggots is to a large extent impediment to sanitation. Therefore, the following points must be taken into account when choosing a breeding site: Keep away from residential areas: chicken dung or other wastes are piled up in hospitals, adults fly into the house and affect human health. . Pay attention to the perennial wind direction: Pay attention to the local dominant wind direction throughout the year. Set the fly maggot farm on the downwind side of the chicken farm to prevent odors from drifting into the rearing room and several clubs, which will affect the healthy growth of the breeder and chickens. Keep away from water sources: fly maggot farms must stay away from self-contained water sources and public water sources to prevent sewage from seeping into the ground, causing water quality to deteriorate and affecting the flock water use. Waste dumps: The production sites for fly larvae must have special sites for the stacking of chicken dung and fly larvae to prevent environmental pollution.
Third, the breeding room, shed building
The area of ​​the heat preservation room and shed is calculated on the basis of 1 square meter for every 1 kg fly larvae produced. Excessive room or shed is not conducive to heat preservation, and too small can not guarantee production. This is a big problem for fly maggot farming, which involves investment issues. Funds allow the construction of cold insulation rooms for perennial farming; insufficient funds can engage in greenhouse seasonal farming. Simple outdoor farming is affected by temperature and rainwater. Longer farming time in the south and shorter northern China, this way of cultivation can neither guarantee production but also impede environmental sanitation and should not be promoted. The following points should be noted in the construction of a production breeding shed:
Cold insulation: In order to ensure that the temperature inside the shed is above 25°C, the wall must have a certain thickness, the doors and windows should be tight, and the room should have heating and temperature adjustment facilities. The summer temperature of plastic sheds is too high, and it is difficult to reach 25°C in the cold season, so it is not suitable for breeding.
Rain and sun protection: shed farming should pay attention to rain, so as not to destroy the breeding environment of fly maggots. During the summer season, we must also pay attention to avoid sun exposure and prevent the fly maggots from being hardened to cause the locusts to die.
The specific structure, size, and shape of the room and shed can be adapted to local conditions. It is not necessary to force the sheds to be consistent and applicable.
IV. Production Aquaculture Management
The production management of fly maggots can generally be divided into two parts: the induction of fly spawning and the growth of pupa.
The female fly is instinct for safe hatching. When it lays eggs, it is often carried out in a sheltered place or sheltered place with rich nutrients. This habit of the female flies can be mastered by using plastic square plates, cans, and other containers to contain nutrients ( Meat bones, residual dregs, fish guts, watermelon rind, wheat bran, sugar liquid and other wastes) are placed in sheltered areas to attract flies and spawned. When the eggs hatch into aphids, they can be moved into chicken dung for growth.
During the growth and management of the fly, it is necessary to grasp the habit of no longer feeding on the feed after it has matured, and to start crawling into the soil to degenerate this habit. Collect or fly the fly larvae in time.
The fly maggots can be divided into two types, dry and wet. Dry-type rearing is: Spread chicken litter on plastic cloth or concrete floor, 80 centimeters wide and 10-15 centimeters in height. After the fly eggs or hatching cubs are moved on, sprinkle water to maintain a certain humidity, and the eggs or larvae can be hatched and grown. Wet breeding is to build an impervious pool with a depth of 30 cm and a width of 60-80 cm in the room or shed. The pool is filled with water, and the chicken manure is put into a thick paste and transferred into the fly eggs. He grew up. Regardless of dry or wet feeding, when the fly larvae grow, it is necessary to clean up the worms in time and regularly replace the new chicken worms to increase the yield.
Fifth, fly maggot processing and storage
The fly maggots collected or collected should be put into hot water and burned immediately, and then they should be removed from the sun (baking) or directly mixed into the comminuted feed for corn and fed in time. Stir in cornmeal for a long time to prevent mildew.
The fly larvae have more daily output and can control the moisture after drying so as to facilitate long-term preservation. When the fly larvae are processed, we must pick out dead worms that are spoiled and deteriorated so as not to affect the quality of mash.
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