Black chicken in the old courtyard, characterized by five black and one green, hair, skin, meat, entrails black, eggshell green, contains a large number of lecithin, vitamins, collagen, trace elements, is a unique natural health food, it has both The advantages of black chicken, but also the characteristics of producing green shell nutritious eggs, has become the highest return of the new breed of poultry. The characteristics of the old hospital black chicken are:
1 easy to raise: strong disease resistance, staple food grains, feeding such as chicken, can be raised throughout the country. 2 High value: It has good health care effects on hypertension, coronary heart disease, diabetes, chronic bronchitis, promoting children's intellectual development, and improving immunity. 3 Market: The old hospital black chicken has always been a best-selling product in China. It is now a very small amount of domestic farming and is very popular in five years. It is currently the golden opportunity for introduction. 4 High efficiency: The annual production of eggs is about 160, and the green shell rate is about 30%. The current green shell egg 2 yuan / piece -4 yuan / piece. Therefore, the development and development of old farm black chicken breeding has very good prospects. Now we will refer to the breeding technology of the black chicken breeding cooperative of Jinshilian old hospital in Jingmen for many years.
1. Construction of the chicken house: The chicken house is built with sunny slopes on the slopes of mountains and forests. Before and after the chicken house, a 70*120 cm light window can be opened every 3 meters. The indoor can be placed on one side. The drinking fountains and troughs are at equal distances. Distributed in the house, at the same time, on the side of the sunny side, a small door with a height of 160 cm and a width of 70 cm was opened, and a sports ground with sand was set outside the door. General common chicken houses are suitable for keeping black chickens in the old hospitals. The chicken houses can also be used for leisure accommodation or simple shelters.
Second, hatching: Eggs should be selected more than 40 grams each, the use of artificial hatching, hatching plant hatched, a large number of breeding hatchery hatchery. Hatching technology points: 1 Temperature and Humidity: Incubation in batches should adopt constant temperature incubation. Each batch of eggs should be placed in a cross interval. The hatching eggs should be noted that the head should be placed upwards on the egg tray, and the first day of incubation should be -18 days. (The egg surface temperature) should be 37.8°C in cold days, and 37.5°C in summer. It should be transferred to the hatching machine on the 19th day of hatching. The eggs should be laid flat. The temperature in the machine should be 37.2°C in cold days and 37°C in summer. . The relative humidity was 60% on days 1 to 18, and 70% on day 19 to day 21. 2 turn the egg: turn the egg every two hours, the angle of 90 degrees. 3 hatching: general hatch to hatch on the 20th day, basic hatching completed in 21 days. 4 Disinfection: The hatching must be disinfected once half an hour after hatching and before hatching. The hatching is completed, and the cleaning and disinfecting is done once. Frequent use of formalin fumigation or 100-total poison spray disinfection.
Third, nutrition and feeding: The old hospital black chicken nutrition requirements are as follows: chicken diet crude protein 20%, metabolic energy 2850 kcal/kg, young chicken crude protein 15%, metabolic energy 2750 kcal/kg, breeder crude protein 17 %, metabolic energy 2800 kcal / kg. The hatching period is generally within 30 days of hatching. The key is the heat preservation during the brooding period. The method of heat preservation is the same as other chickens. The common electric heat insulation umbrella is used to add the underground flue, and a small amount of breeding heat is used for the infrared light insulation. The shell is about 33° C. within 3 days after shelling. Reduce the temperature by 2°C per week. The principle is to evenly distribute the chicks around the heat source. After drinking water, start eating, feed the full-price chick material throughout the day, feed 2 times -3 times a day, and also pay attention to ventilation and ventilation during the brooding period. Density is generally 40-50 eggs per square meter on the 10th day of the 20th. Thirty birds were aged 30 and 20 were young. After 20 weeks of age, about 10 eggs were raised per square meter. After 30 weeks of age, quantitative feeding is used to prevent premature and overweight. The body weight of 20-week-old hens is generally controlled to be about 1.5 kilograms, the weight of the cocks is about 2 kilograms, and the number of breeder chickens is 100-200 per group. Restricted breeding, but also limited conditions to light, preferably 8 weeks after the change began to black chicken house, 8 hours of light daily. The requirement for egg production is that the pre-harvest light is up to 16 hours per day up to 20 weeks of age, and the peak egg production is 16 hours to 17.5 hours. At the age of 20 weeks, young chicken feed was changed to full-priced egg-laying chicken feed, and water-soluble multivitamins were added to drinking water. Farmers bred old chickens in the old hospital to feed some green fodder. The general dosage is about 20% of the total feed, but Do not mix in dry feed. The feed consumption of laying hens is about 85 grams per day. Pay attention to the regular feeding of medium and coarse grains. The dosage is 6 kg to 7 kg per 1000 chickens. The breeders can be equipped with nest boxes, rectangular egg production basins made of wood, and fine sand to keep the environment quiet and dry.
4. Disease prevention and treatment: Disease prevention runs through the entire feeding process. The hatchling chicken should be injected with Marek's vaccine for chickens. The chicks are on the 1st, 5th, 12th, and 14th days of age, and the poor management of the disease is 35 days. Age - 37 days of age each drug once, every 3 days - 5 days, to prevent Salmonella, E. coli and other bacterial diseases, the preferred drug is enrofloxacin, with 10% solution 100 ml dissolved in 100 kg of water to let the chicken drink half a day Or 10 mg per kilogram of body weight. In addition, drugs such as tylosin and doxycycline are used to prevent respiratory diseases such as mycoplasma and mycoplasma. Frequently use 100 to kill disinfection disinfection syrup. Care should be taken to prevent coccidiosis before and after 3 weeks of age. 7 days old and 10 days old for Newcastle disease II seedlings and nasal drops or drinking water. At the same time, chicken pox vaccine was used. 12 days old and 14 days old, and the first free chicken bursal vaccine was used to drink water. . Breeding chickens should do preventive work on inactivated oil seedlings such as Newcastle disease, bursa of Fabricius, infectious bronchitis and egg drop syndrome, and be formulated according to the local chicken immunity program.
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