Breeding techniques of Black Black Chicken

Green-shell laying hens are the leading breeds in the series of laying hens in 2011. the profit of their eggs is higher than that of other egg lines, and their nutritional value is also higher, which is determined by their genetic properties. Purebred five-black green-shell laying hens are not only in demand. And the price of its eliminated chickens in the market is also twice as high as that of other chickens, and demand exceeds supply. Five black chicken "black hair, black skin, black meat, black bone, black viscera, eggs are green, is a collection of natural black food and green food as one of the best rare birds, its green shell eggs are known as" Oriental Divine Egg, Huaxia Pearl ". It is an ideal nutrition and health product. 1. The construction of the chicken coop shall be built in a ventilated and sunny place. A 70 cm × 120 cm daylighting window can be opened every 3 meters before and after the chicken coop. Perched racks, drinking fountains and material troughs can be placed on one side of the room, which are evenly distributed in the house. At the same time, a small door 160 cm high and 70 cm wide is opened on the sunny side, and a playground covered with sand is set outside. Ordinary henhouses are suitable for raising green-shell laying hens, and henhouses can also use spare rooms or set up simple sheds according to local conditions. 2. Hatching eggs should weigh more than 40 grams and adopt artificial hatching. Key points of hatching techniques: ① temperature and humidity: constant temperature should be used for hatching in batches, and each batch of eggs should be placed at cross intervals. The hatching eggs should pay attention to putting the big head upward on the egg plate on the 1st ~ 18th day of hatching. The incubator (egg surface temperature) should be 37.8 ℃ in winter and 37.8 ℃ in summer, and be transferred to the hatching machine on the 19th day of hatching. Keep the eggs flat. The temperature inside the machine is 37.2 ℃ in winter and 37 ℃ in summer. The relative humidity is 60% from day 1 to day 18 and 70% from day 19 to day 21. ② eggs: turn the eggs every two hours at an angle of 90 degrees. ③ hatching: generally hatching to the 20th day began to shell, 21 days and basically finished hatching. ④ disinfection: eggs must be sterilized half an hour after laying and before hatching. After hatching, cleaning and disinfection should be done. Spray disinfection such as formalin fumigation or permethrin is commonly used. Third, nutrition and feeding out of the shell within 30 days is generally the breeding period, the key during the breeding period is heat preservation, the heat preservation method is the same as other chicks, generally commonly used electric thermal insulation umbrella plus underground flue, a small amount of breeding with infrared light heat preservation. It is appropriate to take 33 ℃ within 3 days, and then reduce it by 2 ℃ per week. The principle is that the chicks are evenly distributed around the heat source. First drink water and then eat, feed full-price chicks throughout the day, feed 4 ~ 6 times a day, and pay attention to ventilation during the breeding period. the density is generally 40 ~ 50 per square meter at 10 days old, 30 at 20 days old, 20 at 30 days old and about 10 at 20 weeks old. After 30 days of age, quantitative feeding was used to prevent precocity and overfertilization. the body weight of 20-week-old hens was generally controlled to be about 1.16 kg and that of Roosters was about 2.01 kg. Breeder chickens can be raised in each group of 100 ~ 200 chickens. In addition to restricting breeding, breeder chickens should also be conditionally limited to light. It is best to start raising in a black chicken house after 8 weeks, with light for 8 hours a day. During the laying period, the light was required to reach 16 hours a day before the beginning of laying at the age of 20 weeks, and the peak of egg production was 16 hours ~ 17.5 hours. At the age of 20 weeks, the young chicken feed is changed into full-price egg-laying chicken feed, and water-soluble multivitamins are added to the drinking water. Farmers can feed some green vegetables or grass, accounting for about 20% of the total feed, but not mixed with dry feed. The feed consumption of laying hens is about 85 grams per day. Pay attention to adding medium and coarse sand grains frequently, feeding 6 ~ 7 kilograms per 1000 hens. The breeding henhouse can be equipped with an egg laying box and a rectangular egg laying pool made of wood, which is filled with fine sand to keep the environment quiet and dry. Fourth, disease prevention and prevention should run through the whole feeding process. The chickens coming out of the shell should be injected with Marek's vaccine. The chicks were injected with Marek's vaccine at the age of 1 day to 5 days, 12 days to 14 days, 35 days to 37 days with poor disease management, 3 to 5 days each time. To prevent bacterial diseases such as salmonella and Escherichia coli, enrofloxacin is the first choice. Drink 100 milliliters of 10% solution in 100 kg of water for half a day, or 10 mg per kilogram of body weight. In addition, Tylosin, doxycycline and other drugs are used to prevent respiratory diseases such as mildew plasma. Drinking water is often disinfected with disinfectants such as Baidu. Pay attention to the prevention of coccidiosis before and after 3 weeks of age. From 7 days to 10 days old, the chickens were given Newcastle disease Ⅱ vaccine nasal drip or drinking water, and the chickens were vaccinated with fowlpox vaccine at the same time. From 12 days to 14 days old, the chickens were first immunized with infectious bursal disease vaccine in drinking water, and it was better to strengthen the immunization once after the first immunization for 2 weeks. Breeder chickens should do a good job in the prevention of inactivated oil emulsion vaccination against Newcastle disease, infectious bursal disease, infectious bronchitis and egg drop syndrome, which can be formulated according to the immunization procedures of local domestic chickens.

Also known as Medicinal Chicken and Bao Black Chicken, it is a natural black medicinal nourishing rare bird, and it is the only surviving rare breed in China. It is characterized by "five black and one green", with black feathers, black skin, black bones, black flesh, black viscera and toes are all black. The hen has compact feathers, 5-6 crown teeth, bright eyes, most of the ear leaves are light green, the meat droop is deep and thin, the feathers are flaky, the shins are thin and short, and the adult hens weigh 1.1-1.4 kg. The rooster is vigorous, singing forcefully, single crown erect, dark purple, crown teeth 7-8, ear leaves purplish red, neck feathers, tail feathers green and warped, weighing 1.4-1.6 kg, V-shaped. Its red crown has high egg laying performance and produces 180 eggs a year. For the commercial generation raised in large groups, the ratio of green shell eggs is about 80%. This chicken breed has significantly higher resistance to environmental changes than ordinary domestic chickens, and can be raised in the north and south.

Green shell egg black chicken, the natural green shell egg is natural green, the egg yolk is big, the color is red, the protein is tender, the egg taste is fragrant, and the meat is delicate, fragrant, delicious, edible and ornamental value. It is rich in protein, amino acid, vitamin A, D, E, calcium, iron, zinc and other nutrients needed by the human body, which is two or three times higher than that of ordinary native chicken, but the fat content is very low. it is a pure natural high nutrition and health food. For hundreds of years, the chicken has been locally selected as an excellent tonic for women to replenish their nutrition and a good gift for relatives and friends.