1, plastic pot (barrel) propagation method
This method can be produced in small quantities, and each plastic pot produces about 1 ~ 1.5 kg of fly maggots. Can I feed the pheasant 50? 75. Put fresh animal viscera, dead mice, etc. Where there are many flies, let the flies lay eggs on it, release them early and collect them later, and put the collected fly eggs into a large basin with a diameter of 6 cm (or a plastic bucket with a diameter of 30 cm). Sprinkle water into the plastic basin, keep it moist and cover it. After 2-3 days, maggots will grow out. This method can breed fly maggots in the wild without introduction. Feeding maggots, the food intake is from less to more, that is, putting fresh chicken manure and pig manure into a basin according to the ratio of 1: 1, feeding 1 kg in a plastic basin with a diameter of 60 cm every day (barrel feeding is halved), and then spraying 100 ml of 3% sugar water (or sugar mill waste liquid and molasses). Feeding method: pour the water into the basin, stir it gently with a wooden stick, remove the fresh maggots floating on the water surface, clean and disinfect them, and feed them directly to the animals. The residual water is poured into biogas digesters or cesspits for fermentation and sterilization. If it is used to feed turtles, eels and fish, it can be poured into the pond with manure to feed.
2, outdoor floor culture method
This method is suitable for large-scale breeding in farms.
(1) Selection of breeding grounds. In places far away from houses and close to livestock houses, a piece of land should be leveled and compacted, and it should be kept above the water surface as a breeding surface. The area of a culture surface is about 4 square meters. The number of culture surfaces is determined according to the feeding scale.
(2) Fabrication of the bracket. Make a scaffold with iron or wood to cover the culture surface, with a height of 50 cm. Cover both sides of the scaffold with a layer of kraft paper to block the direct sunlight. Then put a layer of plastic cloth around the bracket (the east and west sides can be lifted) to make a cover to keep warm and moisturize. The scaffold is as big as the culture surface, movable and removable at any time, which is convenient for feeding and taking maggots.
(3) spread manure on the cultivation surface, mix fresh chicken manure and pig manure evenly according to the ratio of 1: 1, spread them flat, wet them with water before spreading them flat, spread the manure loosely and evenly on the cultivation surface with a thickness of 5- 10 cm, which is thin in hot days and thick in cold days, and finally move the bracket to spread the manure layer.
(4) Within 24 hours after laying manure, spray water several times according to the humidity requirement to keep the surface of manure layer moist, so as to facilitate flies to lay eggs and hatch eggs. If you spray water with chicken manure; If pig manure is used alone, three ten thousandths of ammonia or ammonium bicarbonate can be added to the water to attract flies to lay eggs. After the flies lay eggs in the dung layer for a day and night, the plastic sheets on the east and west sides of the bracket can be put down and pressed around, and the temperature in the hood can be maintained, so that the fly eggs can hatch in the dung layer.
(5) The fly eggs can hatch into maggots at 25℃ for 8 ~12 hours. After maggots hatch, water should still be sprayed on the dung layer according to the evaporation of water, but there should be no water in the dung layer to prevent maggots from choking. The plastic sheets on the east and west sides of the opening and closing bracket are used to adjust the temperature in the cover between 20 ~ 25℃. In the late growth stage of maggots, it is better to reduce the humidity of dung layer, which is wet inside and dry outside.
(6) The maggots can be used after hatching for 6-9 days. In principle, a large number of maggots cannot be pupated. Because maggots are afraid of direct sunlight, when taking maggots, they can remove the bracket and let the sunlight shine on the dung layer, so that maggots can drill to the bottom of the dung layer, shovel the dung on it, then peel off the dung and maggots at the bottom and put the chickens in for pecking. This is the easiest way to collect maggots. After the chicken eats the maggots, gather the feces in piles, add 50% fresh feces, mix them evenly, water and flatten them, and then raise the maggots again. The method can be carried out at the temperature above 5℃, and the temperature below 65438 00℃ can be improved by adding 20% horse manure for fermentation. If 500 grams of maggots are produced per square meter and each chicken needs 20 grams per day, then 4 square meters of breeding area can produce 1 cycle to feed 100 chickens 1 day.
3, soybean milk blood single tube propagation method
This method is suitable for breeding in seedling markets or food processing plants that specialize in breeding and produce a small amount of fly maggots in urban areas.
First, put 1 vat in a place where there are many flies, grind 500 grams of soybeans into soybean milk and pour it into the vat, then add 10 kg of water and mix well, then pour 2.5 ~ 3 kg of fresh pig blood or cow blood, and then add 5 kg of rice washing water and mix well, so that flies can feed and lay eggs in the vat, so as to catch maggots and feed them to animals. Feeding once can be used continuously for 2 ~ 3 months. The requirement of this maggot raising method is to keep 40 ~ 50 kilograms of soybean milk blood in the tank, and pay attention to adding it when the volatilization of soybean milk blood decreases; In addition, the jar must be placed where there are many flies.
4. Multi-cylinder fecal cycle propagation method
This method is suitable for small feed farms, small fish ponds and fry farms. ..
Take 12 tanks that can hold 30kg of water, and arrange them in two rows in a place where there are many flies. The numbers are 1 ~ 12 in turn. 1 day, put 1 kg fresh chicken manure, 1 kg fresh pig manure, 500g human urine, 2 dead rats (frogs) or 250g animal carrion and internal organs into 1 cylinder, and then add urine water every day to keep it moist. On the second day, according to the method and quantity of the first day, put the No.2 tank into the pond, put the No.3 tank into the pond on the third day, and so on. /kloc-put 12 into the pond on 0/3, then pour the adult maggots in 1 into the pond to feed the fish. If you feed livestock food, you can fill the tank with water, let the maggots float to the surface and take them out to feed. Then dump the manure water, clean the tank, and feed it again according to the practice of 1 day. The second tank was taken on 14 day, and the third tank was taken on 15 day, so that fresh fly maggots were continuously obtained and used as feed for livestock and poultry and live bait for animals.
5, platform introduction pond propagation method
This method is suitable for small-scale farms.
(1) 1 m2, several small square cement pools with a depth of 5cm will be built. Build a feeding platform with a height of 1 200 cm by the pond, and then inject water into the pond. The water level is slightly lower than the feeding platform, and the pond is covered with a sunshade canopy with a height of1.5 ~ 2 m.
(2) Put 500 grams of leftover meat, skins, intestines or internal organs discarded by slaughterhouses on the feeding table, or 300 grams of animal carcasses such as rats and rabbits to lure flies to feed and lay eggs.
(3) Put the culture material placed on the platform for 2-3 days into the pool water and stir for a few times, shake off the young maggots and fly eggs attached to it into the water, and then put the culture material back on the platform to lure the flies to lay eggs again.
(4) Put 2kg of fresh pig and chicken manure or 4kg of human manure into each pond, feed it for 24h, and then feed it after the fly maggots decompose the floating manure.
(5) Keep in the pond for 4-8 days, and catch the adult maggots in time when they climb to the edge of the pond to prevent the adult maggots from escaping. Take out the maggots with a colander or gauze, wash them with clear water and feed them while they are hot.
(6) clear the pool. When the insoluble dirt layer at the bottom of the pond exceeds 15 cm, which affects maggot fishing, the dirt at the bottom of the pond can be removed at one time and new water can be injected.
Twenty-four ponds were built and two ponds were fed every day. By circulating feeding, 6 kilograms of fresh maggots can be produced every day, which can feed 12 pigs or 300 chickens.
6, pond hanging basin feeding method
Rows of supports are arranged at the distance of 1 m from the bank of the pond, and 1 ~ 2m intervals are used to hang1washbasins with a diameter of 400 meters in rows on the pond surface of special economic animals, and the basin is about 20cm away from the water surface. Put the same amount of pig manure and chicken manure in the washbasin, wet it with water, sprinkle a few drops of ammonia water, and then put a few dead fish or mice on the basin surface to lure flies to lay eggs. Houseflies or other wild flies will fly to the basin to feed and lay eggs. After a week, the maggots will crawl out of the basin and fall into the water, where they will be directly eaten by the animals in the pond. By adopting this method, the equipment is simple and the operation is simple. Two kilograms of feces can produce 500 grams of fresh maggots. Several points should be paid attention to in gymnastics: first, the basin should not be too deep, and 10 ~ 15 cm is appropriate; Second, it is best to use a plastic basin with 2 ~ 3 water holes at the bottom to prevent water from accumulating in the basin during heavy rain; 3. After the basin is filled with manure, it is best to cover 3/4 of the basin surface with lotus leaves or kraft paper, leaving14 of the basin surface for dead animals to attract flies, which is beneficial to the growth and development of maggots. Fourth, high-temperature water evaporates quickly in summer, so it is necessary to check and water it frequently to keep the culture material moist.
7, outdoor soil pond feeding method
This method is suitable for forest areas and farming areas near reservoirs, and is combined with the cultivation of dung piles and pits on the ground.
Choose a dry and warm place in the leeward facing the sun, 2m high, 1m wide and 0.6m deep, put in livestock manure, straw and bagasse, water them, mix them by wet fermentation, and put in the stench of dead fish and dead animal viscera. It is covered with wooden boards with 1 0.3m square movable glass windows for adult flies to fly into branches to feed and lay eggs. Pay attention to dig drainage ditches around the outside of the pool, and no water can accumulate in the pool. Every 7 ~ 10 days after discharging, open the wooden board cover, peel off the dung layer on the surface, drive the chickens and ducks into the into the pit to feed, or shovel the dung and maggots into the bucket and pour them into the pond reservoir to feed the fish.
8, outdoor plastic greenhouse fly maggot culture method
Shallow pits 1 each with a length of 5 meters, a width of 0.8 meters and a depth of 0.25 meters are dug between rows of outdoor fruit trees or under trees, thick material films are laid in the pits, and manure water 15 cm is injected. Put 2 loads of chicken manure, 2 loads of pig manure, 1 load of cow manure and 65438 loads of carrion and internal organs of dead mice or animals in each pit. Sprinkle some quicklime and plant ash along the pit to prevent maggots from escaping. Then use bamboo strips to make the pit into a semi-circular bracket with a height of 1 m, cover it with plastic film, and tamp the periphery of the plastic film with soil. A hole of 20 cm -30 cm is opened in the middle and at both ends, so that flies can fly in to feed and lay eggs. After 5-7 days, the plastic film can be opened and cleaned to make maggots, which can be used as bait.
9. Fertilize the fruit trees and raise maggots.
This method is a combination of fly maggot breeding and fruit tree fertilization, which is suitable for raising birds in fruit forest. The specific operation is: in the young orchard, dig an annular ditch 40-50 cm away from the tree, with a width of 20-30 cm and a depth of 30 cm. Put a load of fresh pig and chicken manure in each ditch, and then put some dead mice, animal offal or pig hair blood to attract flies to lay eggs. Pay attention to watering every day and keep it moist. After three days, cover the manure with turf. A week later, open the turf and let the chickens go into the garden to scrape dung and eat maggots. Then cover it, and then open it a week later to feed the chickens. Repeat this for 4 ~ 5 times, the maggots are temporarily less, and the maggot-raising ditch can be covered with soil to complete fertilization of fruit trees. Dig 3 ~ 4 symmetrical point maggot pits along the crown of forest orchard, with the specifications of 0.8m long, 0.4m wide and 35cm deep.
10. Advantages of keeping flies in big cages
In the past, people kept flies in small cages. There are about 654.38+00000 flies in a cage of about 0.2 cubic meters. Feed them with information on egg collection every day, and take out the eggs and pour them on feces or wheat bran. When maggots grow up, they are screened out in the sun. This method is not only inefficient, but also has high labor intensity, high labor cost and low output.
The relatively perfect way of keeping flies in houses appears around 200 1. Because the manual operation process is simple, the labor cost can be significantly reduced, so that the cost of raising fly maggots can be really low. Large-scale breeding and utilization of fly maggots have largely replaced expensive protein feed such as fish meal, which has since become a reality. It not only improves the effect of animal breeding, but also significantly reduces the breeding cost. The benefits brought by the successful popularization of flies in the house to farmers are also very obvious. [ 1]
Of course, no technology can be perfect, and keeping flies in the house is no exception. In the practice of fly breeding, three main shortcomings are found:
1, hard to be true? Sterile?
Flies move in maggot houses and often stay in various environments such as dung piles, walls, flowers and plants. Although feces are fermented by organisms, it is obviously unsanitary for such flies to crawl on people's clothes or bodies.
2. Flies often escape.
Although our fly breeding house uses two screen doors to prevent flies from escaping, some flies often gather at the door, and it is easy for breeders to escape outside, especially in the maggot room, which will lead to flies in the farm. Wild? The number of flies has increased.
3. There is shit flying in the sky, which seriously affects the working environment of farmers.
Anyone who has the experience of keeping flies at home knows that the frequency of excreting feces during feeding is relatively high. In order to ensure the high yield of fly maggots, we often carry out flies? High-density farming? That it always rains in the maggot room? Rain in Mao Mao? Not surprisingly. Farmers often need to wear work clothes and straw hats when they enter the maggot house, because once the excrement pulled by flies falls on the clothes, it is difficult to wash it clean. However, under the high temperature in midsummer, is it really the working environment for aquaculture operators to wear long-sleeved overalls for aquaculture operations? Not good? .
Indoor vertical movement maggot method
(1) Prepare 12 large plastic pots with a diameter of 60 cm and 8 small plastic bowls as the production team. Set a wooden or iron frame with a length of 1 .3m, a width of 0.6m and a height of 1.5m indoors. Scaffold * * * is divided into five layers, each with a height of 26 cm. Each floor is equipped with two plastic pots, and even the top floor is equipped with 12 plastic pots.
(2) Put 5 kg of fresh pig and chicken manure, human urine 1 kg (or 5% carbon ammonia water) and 500 g of 3% sugar water (or waste liquid from sugar factory) into each pot.
(3) Put 8 plastic egg catching bowls containing 250g dead rats, carrion and animal viscera in pig farms or places with many flies to attract flies to feed and lay eggs. After 2 ~ 3 days, the fly eggs and young maggots were washed with clean water and put into two plastic pots respectively. Inoculate two pots every day. After 5-6 days of culture in plastic pots, fresh maggots can be separated as bait.
Design of small fly field
With the improvement of rural science and technology level and production conditions, the shortcomings of current fly maggot production will be overcome. Farmers will start from breeding flies and gradually adopt the efficient breeding mode of small fly farms to produce fly maggots. Based on the advanced experience at home and abroad, a high-tech scheme for a small family fly maggot farm with a daily output of 100 kg is specially designed. For the reference of aquaculture professional households.
First, the basic conditions for running a venue
(1) Calculate the number of breeding flies.
According to the measurement, every 654.38+00000 flies can lay 4 kilograms of fresh maggots in 5-6 days after spawning. The daily output of fresh maggots is 100 kg, and 250,000 adult flies are needed at the peak of normal spawning. To be on the safe side, the number of breeding flies in a production unit should be determined to be 300 thousand. Considering that the breeding flies should be destroyed after spawning, it takes at least 4 days to update them. Therefore, it is necessary to prepare the production scale of two units of fly maggot breeding to ensure the continuous supply of egg pieces needed by 100 kg of fly maggots every day.
(2) The area and cage number of fly breeding houses
There are three kinds of flies: house feeding, cage feeding and cage feeding, among which cage feeding is the best. If each cage is 1m long, 1m wide and 0.8m high, 12000 kinds of flies can be kept. A unit needs 25 cages, which are hung indoors and fixed on the upper and lower floors, and 26 cages are placed in a 30㎡ room. Two production units need a 60-square-meter fly breeding house and 50 cages.
(3) calculating the culture area for feeding maggots.
According to the calculation that the culture area of 1 m2 can produce 500 grams of fresh maggots, the daily production of 100 kg of fresh maggots requires 200 square meters of culture area. If flat tillage is adopted, 1 unit needs to build a plastic greenhouse with a total area of 250 square meters; If three-dimensional culture is adopted, it is necessary to build 1 plastic shed with a total area of 70 square meters according to the calculation of four floors. Compared with expanding the shed surface, the investment is basically the same. If land conditions permit, flat farming should be promoted in rural areas. According to the calculation of 5 days from hatching to maturity, in order to ensure the continuous production of maggots, it is necessary to build 5 production units by adopting the flow production method. That is, plane culture 1250 square meters, three-dimensional culture 350 square meters.
(4) Preparation of fertilizer (culture medium)
It takes 400 kilograms of fertilizer to produce 100 kilograms of fresh maggots every day. According to the formula of 2 portions of pig manure and 0/portion of chicken manure, 266.8 kg of pig manure and 0/23.4 kg of chicken manure are needed. According to the calculation that 1 pig excretes 4kg per day and 1 chicken excretes 68.5g per day, 70 pigs and 1725 chickens need to provide fresh feces. If you can't cooperate with the farm, the fly farm must raise about 80 pigs and 2000 caged chickens. Only in this way can the output of 100 kg of fly maggots per day be ensured.
Production technology and operation method of fly maggot
(1) Building a fly house
Choose a place far away from residential areas with good lighting and ventilation to build a fly house. It is required that the skylight of 1/2 should be made of transparent material, and the doors and windows should be fitted with gauze or iron mesh where flies can escape. Install a ventilator on the wall every 20 square meters, and provide a mobile ventilator in the room. If possible, it is best to install a temperature controller. When the indoor temperature exceeds 33℃, the ventilator and mobile ventilator will automatically work. There are two fly breeding rooms * * *, with an area of 30 square meters and ***60 square meters respectively. The three-dimensional culture is built indoors, with a height of 2 meters and a width of 1 meter, which is divided into two floors. The frame is divided into 13 cells, each cell 1 m, and the upper and lower floors * * * accommodate 26 cages, covering the whole room. Sew a closed cage with nylon gauze according to the specifications of 1m length, 1m width and 0.8m height, open 1 small opening with a width of 25cm and a height of 10cm below one side of the cage, and sew a sleeve with the corresponding size 15 ~ 20cm outside the mouth with nylon gauze. When in use, the cage is fixed on the frame layer, just like hanging a mosquito net, and the bottom of the cage is supported on a small flat plate. In order to make the cage easy to hang, disassemble, disinfect and clean, the four corners of the cage can be fixed on the scaffold layer with clips or hooks. Each cage contains four plastic plates, two for feed and drinking water and two for collecting eggs.
(2) Building a plastic fly maggot shed.
The basic structure is the same as the expansion of the anti-season vegetable greenhouse. If the plane aquaculture infrastructure is16m long, 8m wide and 2m high (effective area 100 m2), there will be 10 plastic greenhouses. There are 1 doors in the east, west, north and south of the greenhouse, which are used for ventilation and feeding and discharging. Two exhaust fans are installed above the greenhouse. If it is a three-dimensional culture, only five greenhouses need to be built, each with a length of 14m, a width of 6m and a height of 3m, with a single area of 84m (the actual culture area is 70m2) and a total area of 420m. There is a 1 m wide walkway in the middle and in the front and back of the shed. There are three layers of culture racks on both sides, each with a height of 30 cm. Even on the top floor, there can be four layers of three-dimensional culture, and there are 200 rectangular bamboo-woven culture baskets 1 square meter. Opening doors and installing ventilation equipment in the shed are the same as those in the flat plastic shed.
(3) Collection and domestication of fly species
Housefly is the intermediate host of many bacteria. After the artificial feeding density is increased, the introduction must be disinfected before it can be used as a kind of fly. Specific methods: Mix 50% pig manure, 30% chicken manure and 20% chopped animal offal, add water to make the water content reach 60% ~ 70%, lay a culture plane with an area of 2 square meters and a thickness of 7 cm outdoors, add a few drops of ammonia water, and lay a plastic sheet on it to avoid rain, which is open around to attract houseflies to feed and lay eggs. The eggs hatch into larvae after 8 ~ 12 hours, and the larvae pupate after 5 ~ 6 days of production. Pick out the pupa with tweezers, soak it in 1% potassium permanganate solution or 3% bleaching powder solution for about 3 minutes to kill the bacteria on the surface of the pupa, and then put it in a cage for raising flies.
Each cage contains 250 grams of sterilized fly pupa, about 654.38+0.2 million. Generally, the feed for raising flies is one of the following: ① 654.38+0.8% rice flour, 20% brown sugar, mixed with water to make a dilute solution; (2) Mashing and refining the steamed and chopped animal viscera or minced meat; ③ Mix 95g fly maggot pulp, 5g beer yeast and 150ml water evenly. If there is no sugar in the above formula, it is best to add some brown sugar or waste liquid from the sugar factory. When 15% pupae become adults, put one of the above feeds into the feed tray in the fly cage. At the same time, water is injected into the drinking plate, and a sponge is placed on the drinking plate, so that flies can perch on it to absorb water without being drowned. 10000 kinds of flies feed about 10 g per day. Put 25 grams of material in 2 dishes at a time, and change 1 times of material and water every two days. There are few materials for raising flies, so the above concentrate formula should be adopted to ensure that a large number of eggs are laid in a short time without degradation. In a suitable environment with temperature 17 ~ 33℃ and relative humidity of 50% ~ 75%, the fly matures and lays eggs 3 days after emergence (it takes more than 5 days in a temperature and humidity environment outside the above range). When flies are about to lay eggs, wheat bran with water content of 60% ~ 70% receives eggs 1 ~ 2 times a day. Pour eggs and wheat bran into a larval feeding basin or pond. Larval culture materials are dried and disinfected pig manure and chicken manure. The disinfection method is generally composting and fermentation, and then exposure to the sun. The method of cultivating maggots is as described above. After pupating, larvae (maggots) are moved into the cage of breeding flies for eclosion and feeding. In this way, after 8 ~ 10 generations, excellent domesticated houseflies can be obtained.
Problems needing attention in raising fly maggots
Third, the problems that should be paid attention to in mass production of feed maggots
The technical operation of mass production of feed maggots is exactly the same as the simple breeding method of maggots introduced earlier. Just expanded the production specifications, so we should pay attention to the following issues:
(1) Before putting into production, a plot test is needed, and the area can be expanded for production only after the relevant data of the design scheme are corrected through the test.
(2) Do a good job in production management, adjust the temperature, humidity, light and heat according to seasonal changes, and patrol and check 4 ~ 6 times a day to create the best ecological environment for fly maggots.
(3) Strengthen the planning and continuity of production, do a good job in assembly line operation, inoculate 1 unit every day, produce 1 unit, and update a batch of flies.
(4) do a good job in comprehensive management, support pig and chicken production and agricultural feed-related industries, and ensure that there is enough feces for fly maggot production. Pay attention to reducing production costs and improving the comprehensive benefits of running a field.
(5) Continue to do a good job in purifying and rejuvenating the seed flies, and increase the output of fly maggots per unit area.
(6) Flies can spread various diseases. In the process of cultivating fly maggots, it is especially necessary to prevent sterile flies from flying out of cages, and it is even more necessary to prevent outside flies from flying into cages for breeding flies.
Separation and fecal treatment
4. The separation of maggots from feces and the treatment of feces after maggots breed.
(1) Method for separating maggot dung
After 4 ~ 5 days of culture, it will grow into a fly maggot. In addition to being left as a kind of fly, it should continue to pupate in the feces, and fresh maggots should be separated from the feces in time.
1, light separation method Because maggots have strong light resistance, they can be irradiated with strong light. When maggots move down from the surface, the remaining culture manure can be peeled off layer by layer. Finally, a small amount of feces mixed with a large number of maggots can be shoveled into the water. After stirring, maggots float on the water surface and are fished out with gauze.
2. According to the habit of the third instar larvae of fly maggots to find dry and dark localized pupae, the dry chaff can be scattered around the surface of the culture medium, so that the third instar larvae can automatically climb into the chaff. At this time, fresh maggots can be collected with a small brown brush to achieve the purpose of separation.
(2) Disposal of feces after maggot feeding.
A small amount of maggots and pupae often remain in the separated feces, which will cause environmental pollution if it is not handled properly. The treatment method is composting. Choose a well-drained place to dig a rectangular pit, pour manure into the pit, spray disinfectant, cover it with plastic film and compost it for half a month, which can be used as fertilizer.
Feed maggots to animals.
Fifth, feed the animals with maggots.
(1) Animal species that can be fed by fly maggots
Shrimp, crab, loach, Monopterus albus, eel, grouper, pond fish, seven-star fish, giant salamander, tropical fish, soft-shelled turtle, grasshopper, frog, toad, pheasant, bamboo chicken, black chicken, guinea fowl, wild duck, mandarin duck, sparrow (young bird), etc.
(2) Feeding method of fly maggots as bait 1. Disinfect before feeding and raise maggots with feces. Generally, fly maggots carry more bacteria. It is best to wash with water before feeding. If you feed precious economic animals, rinse them with 0. 1% potassium permanganate water for 3 minutes.
2. Pay attention to the age and feeding amount of animals. Birds such as ducklings are 10 days old, and chicks are 15 days old. Mammals can only be fed after weaning. Precious birds can only be fed after eating insects. Sparrows can be fed after hatching. The feeding amount should be less at first, gradually increased, and it is advisable to feed it to half full at most.
3. Feeding time Except for animals that prey at night such as clams, most animals are better fed during the day. Those who feed at night should be fed before dark. In order to avoid being thirsty and unable to find water to drink after eating maggots, it will cause animal anxiety. Don't go into the water immediately when the ducks are full. If they eat too much, they can feed dry yeast at 0. 1% ~ 0.2% of the feed.