Efficient techniques of feeding fly maggots to chickens

The larvae of Musca domestica are called maggots, which are high-quality animal protein feed. The nutritional composition of fly maggots is similar to that of high-quality fish meal. The crude protein content of dry products is 59%-65%, crude fat 11%-13%, calcium 0.3%-0.7%, and phosphorus 1.7%-2.6%. When the laying hens were fed with 10% fly maggot powder, the laying rate was 20% higher than that of the layers fed with the same amount of fish meal, and the feed reward was increased by more than 15%. The breeding of fly maggots can be divided into two stages: fly breeding and maggot breeding. The purpose of breeding flies is to obtain a large number of eggs for breeding maggots. The eggs laid by chickens raising fly maggots are rich in a variety of vitamins and carotenoids. Fat worms in eggs are generally packed with no more than 3%, protein content is more than 12%, and contains a variety of essential amino acids, sodium, potassium, calcium and other minerals necessary for the human body.

1. Breeding flies

1. Fly cage. Seed flies have the ability to fly and must be kept in captivity. A rectangular frame of 65 cm × 80 cm × 90 cm is made of wood strips or 6.5 mm diameter steel bar, covered with plastic window screen or fine-eyed copper wire mesh, and gauze gloves are installed on one side of the cage net for feeding and operation. Each fly cage is equipped with a feed basin and a water fountain. 40 000 ~ 50 000 flies can be cultivated in one cage.

two。 Prepare the feed. Seed flies are fed with 5% syrup and milk powder, or grind fresh maggots, take 95 grams of maggot, 5 grams of beer yeast, add 155 milliliters of cold boiled water, mix well and feed. When raising for the first time, rotten eggs can be used and fed in a small white porcelain jar. Feed and water are changed once a day.

3. Breeding flies. As the source of the seed fly, the pupae can be washed and put into the cage of the seed fly, and when the emergence reaches 5%, it begins to feed and supply water. The seed fly was put into the spawning plate 3 days after mating. Fill the plate with 2 beat and 3 height attractants. The attractant is made of wheat bran, chicken feed or pig feed, mixed with appropriate amount of dilute ammonia water or ammonium carbonate water. The eggs were collected once or twice a day, and the eggs were poured into the larval culture room together with the attractant.

4. Control temperature and humidity. The temperature of the seed fly room should be controlled at 24 ℃ ~ 30 ℃, and the air relative humidity should be controlled at 50% to 70%.

2. Raising fly maggots

1. Breeding equipment. A small amount of breeding can be raised in tanks, pots, etc., and large-scale breeding should be raised in a pool. A 1.2 × 0.8 × 0.4 m pool is built with bricks on the ground, and the wall of the pool is covered with cement. The pool mouth is covered with fine-eyed copper wire or sieve silk with a wooden frame.

two。 Maggot culture. The culture material can be prepared with livestock and poultry dung, as well as distiller's grains, sugar trough, bean curd dregs, slaughterhouse scraps and so on. The water content of the culture material is 65%-70%, and the PH value is 6.5-7. The culture pond per square meter was poured into 35 40 kg of culture material with a thickness of 4 5 cm, and 200000 ~ 250000 fly eggs were inoculated per square meter, weighing 20 × 25 g. When inoculating, the fly eggs can be scattered evenly on the material surface. The culture room was kept dark and the temperature of the culture material was controlled at 25 ℃ ~ 35 ℃. After several days of culture, the temperature of the culture material decreased and the volume decreased. At this time, fresh materials should be added according to the number and growth of maggots. At the temperature of 24 ℃ ~ 30 ℃, the individual weight of fly maggots can reach 20 ~ 25 mg after 4 ~ 5 days and nights. The maggots tend to mature, and the maggots can be separated and harvested in the following ways, except that they are reserved for seed use to pupate.

3. Separate harvesting. ① chicken food separation. Sprinkle the maggots and the remaining culture material into the chicken coop, let the chicken eat the fresh maggots, and then clean up the culture material. ② was separated by strong light irradiation. Because the maggots are afraid of strong light, they can be irradiated by strong light. After moving down from the surface of the culture material, the surface culture material is peeled off layer by layer, and a large number of maggots can be obtained in the bottom layer. ③ water separation method. Pour the maggots and the rest of the culture material into the water tank, stir until the maggots float on the water and sift them out.

4. Scientific feeding. Fly maggots are used as feed, and most poultry are fed directly with fresh maggots (dry powder is often used to feed livestock, that is, maggots are scalded to death, dried and ground powder, and added to formula feed).