Fly maggot is rich in nutrition, good palatability, and is one of the excellent animal feeds for snapper with and direct feeding. According to relevant reports, the fly maggot contains an active ingredient of antibacterial enzyme, which has a good effect on the prevention of disease.
(1) the life and reproduction habits of the housefly housefly suitable for room temperature 22 ~ 32 ℃, relative humidity 60% ~ 80% of the environment to live and reproduce. Under the above conditions, the pupa develops after 3 days, from soft to hard, from beige, light brown, dark brown to black, and finally the adult fly breaks its shell from the pupa. Adult flies that have just come out of the shell will only crawl but not fly, and it will take 1 hour before they can spread their wings and start to eat and drink. Adult flies are active during the day and stay still at night, and they start mating and laying eggs when they become sexually mature after 3 days. 6-8 days old is the peak of egg laying, and then it decreases day by day and basically loses the ability of egg laying at the age of 15 days. The fly eggs hatch into maggots in 0.5 to 1 day, and the maggots are cultivated in the feces of pigs and chickens for about 5 days before becoming pupae. A generation of flies takes about 28 days. In artificial breeding conditions, control the optimal temperature and preparation of nutrient-rich culture materials, breeding maggots large, high yield and quality. (2) Breeding facilities can be decided by yourself according to the scale of snapping turtle breeding. The basic facilities of general seed fly breeding, there are breeding workshop, breeding boxes and cages and breeding utensils.
The size of the aquaculture workshop, the snapper farms according to their own needs. However, the workshop is required to achieve a heat preservation, ventilation and cleanliness. The ground is preferably cement floor, so that it is easy to clean, in order to effectively prevent other insects from entering the outdoor breeding workshop, the ventilation window needs to be installed with a fine screen.
The cage frame of the breeding box can be made of steel or wood, and then the cage frame is covered with fine nylon mesh. The specifications of the cage box are 150 centimeters long, 100 centimeters wide and 120 centimeters high. The bottom of the cage box is required to be 30 centimeters above the ground when it is installed. (3) Breeding utensils mainly include feed pots, drinking pots, feathering tanks and egg-laying tanks. (4) Breeding flies breeding flies in cage boxes, generally the above specifications of the cage box breeding flies 15,000, each cage box should be added to the side of the cloth sleeve, in order to reach out to feed, water and egg collection. 15,000 adult flies are fed with 25 grams of powdered milk per day, the feed is placed in a gauze cushion surface of the basin, so that the adult flies stand in the gauze sucking the feed and water, and change 1 time a day. The water basin was put into the gauze, and the spawning tank was put into the wet wheat husk for the fly species to lay eggs, and the eggs were taken once a day and sent to the maggot room for maggot breeding. Breeding flies lay eggs at 8:00 to 15:00 every day in the largest number, the time to take the eggs should be appropriate. Each batch of seed flies will be eliminated after 15 to 20 days of feeding. Use hot water or steam to kill them, dry them and grind them into powder, which can also be used as feed for snappers, and then replace them with the last batch. During the breeding period of seed flies, the doors and windows are installed with glass and screens to facilitate temperature regulation, and fans are installed on the walls to regulate the air. It is desirable to have heating equipment in the room to keep the temperature at 22~32℃ in winter and the relative humidity in the room at 60%~80%. Be careful when operating to prevent the seed flies from escaping. (5) fly maggot breeding fly maggot breeding can be in the heat preservation and ventilation conditions in good indoor, brick side height of 20 cm, an area of 2 ~ 5 m 2 maggot, or wooden frame with a plastic tray maggot. A diameter of 50 centimeters of plastic disk, with 3 kg of bran breeding a day, you can produce maggots 1.5 kg.
Specific maggot operation method is: the fly eggs and wheat skin material poured into the disk, add wine lees, soybean dregs or maggot material such as wheat skin, a little mixing can be. Note that the fly eggs should not be exposed on the surface of the maggot material, so as not to lose water and dead eggs. The thickness of maggot material is generally 5 to 10 centimeters, maggot material within the fermentation temperature is not higher than 40 ℃, not less than 20 ℃ as a standard. If it is summer, the temperature is high, maggot material should be appropriate thin; on the contrary, winter temperature is low, maggot material can be appropriate to increase the thickness of some. If you use human and animal feces, it should be used after killing bacteria and parasites. The ratio of its material and maggots, chicken manure, for example, generally 3.5 ~ 4 kg to produce 0.5 kg of fresh maggots. Regardless of which raw material maggot farming, maggot dry humidity should be mastered in 60% ~ 65% is appropriate. (6) fly maggot collection using fly maggots afraid of light characteristics of collection. With the dung grill in the maggot pool feed surface, and constantly push, the fly maggots will drill down, the surface layer of feed away, this method repeated many times, and finally left a small amount of feed and a large number of fly maggots, at this time you can take the fly maggots, mixed with other feed feeding snappers. (7) Breeding flies in the production of maggots at the same time, let part of the maggots pupation, as a source of new fly species. There are two ways to pupate: one is to let the maggots in the material of natural pupation, wash out the maggots with water, that is, to get the fly pupa; the other is when the maggots in the maggot material to about 5 to 6 days to yellow maturity, the maggots will be removed to the basin containing dry wheat, to promote the pupa, and then use a sieve to separate wheat to get the pupa. The size of the pupae is required to reach 50 pupae per gram.