Efficient breeding techniques of Black Chicken

The black chicken looks like a domestic chicken, but its head is small, its neck is short, and its eyes are black. The crown is small and the wings are short, and the flying ability is poor. The whole body has white feathers, short and black legs, dense capillaries and bifurcated hind toes. The black chicken is small, the male adult chicken weighs no more than 2 kg, and the female weighs 1 kg-1.5 kg. It lays about 80 eggs a year, with an average egg weight of 41 grams.

Breeding of black fowl

The black rooster matured early, about 15 weeks old, and the hens matured sexually at the age of 25 weeks, began to lay eggs, and reached the peak of egg production at 33 weeks old.

The natural mating method of rooster and hen is usually adopted, and the proportion of male and female is 1 ∶ 10 in large groups. In the matching group, there were 7 rats in each cage, and the ratio of male to female was 1 ∶ 6. The natural life span of black chicken can reach more than 10 years, but the breeding peak period is only 2 years. The eggs were collected and fumigated with formalin immediately and stored after disinfection. The suitable temperature for storage of breeding eggs is 10 ℃-15 ℃, and the humidity is 65% Mel 70%. After storage for more than a week, the eggs are turned once a day to prevent yolk from adhering to the shell membrane. The eggs are usually stored with their heads upright and the incubation period is 21 days.

There are six incubation conditions: temperature, humidity, ventilation, egg turning, egg drying and egg lighting. The suitable temperature is 39 ℃; the humidity is 55% in the early and middle stages of hatching, and the adhesion between chick villi and eggshell membrane is prevented from increasing to 60% Mel 70% in the later stage (19 days-21 days); keep ventilated and supply fresh air to embryos; eggs must be turned after hatching, once every 3 hours. Stop turning eggs after 18 years of age, and the angle of turning eggs is 45 °. After 17 embryo age, it is necessary to cool the eggs, cut off the power supply, open the hatchery door, turn the fan as usual, and cool the eggshell to 32 ℃. According to the egg is to observe whether the embryo is normal, if found abnormal, timely find out the reason to adjust the incubation conditions.

Feeding and Management of Black Chicken

Brood feeding and management. Black chickens aged 0-6 weeks should be kept warm by 35 ℃ in one week, 2 ℃-3 ℃ per week, and 23 ℃ in 6 weeks. The suitable density was 50 rats per square meter from 1 week to 2 weeks old, 30 rats per square meter from 3 weeks to 5 weeks, and 20 mice per square meter from 6 weeks to 10 weeks.

After entering the rearing room, the chicks should drink water for 2 hours-3 hours before eating. When feeding for the first time, you can eat with broken rice, millet or particulate material. When chicks learn to drink and eat automatically, they should try their best to eat nutritious full-price formula feed the next day. During the breeding period, the feed formula was as follows: corn 60%, bean cake 24%, wheat bran 5%, imported fish meal 6%, yeast powder 2%, bone meal 2.5%, salt 0.4%, trace elements 0.1%, multivitamin 10 grams, fed 6-8 times a day, and 4-6 times a day after 3 weeks.

Under normal circumstances, chicks should be ventilated from the fourth day, discharge ammonia and carbon dioxide from the house in time, and create safe environmental conditions so that the chicks will not be disturbed.

Breeding and management of black fowl. The silky chickens aged from 7 weeks to 25 weeks should be transferred from cage breeding to ground level breeding. In order to strengthen exercise and promote growth and development, do not leave for breeding as commercial chickens, male and female separate management, flat breeding with 100-150 as a small group. Feed formula: corn 64.5%, bean cake 23%, wheat bran 4%, imported fish meal 3%, bone meal 2%, salt 0.4%, yeast powder 3%, trace elements 0.1%, multivitamin 10 grams, 3 times a day.

Under the condition of flat feeding, the feeding density was 10 per square meter at the age of 18 weeks and 7 per square meter after 18 weeks of age. Should also be weighed regularly, below the standard to increase the amount of feeding or feeding times, and vice versa.

Feeding and management of adult breeder chickens. Provide adequate nutrients, reduce the number of eggs outside the nest, improve the fertilization rate, and maintain the cleanliness of the eggshell. During the peak laying period, the light should reach 16 hours a day. For hens who have just hugged their nests, testosterone propionate can be injected immediately, 12.5 mg per kilogram of body weight.

? Prevention and Control of Black Chicken Blight

Get ready to get into the chicken. Sweep the brooding house thoroughly. Plug the rat hole, then spray and disinfect it with 2% Mel 3% caustic soda water, and finally seal the chicken coop and fumigate with formaldehyde and potassium permanganate.

After entering the chicken coop, the henhouse was sprayed with 2% Mel 3% caustic soda water once a month, and the chickens in the henhouse were sterilized once a week with chlorotoxin or peracetic acid.

Timely immune prevention of Marek's disease, Newcastle disease, infectious bronchitis, infectious bursal disease and other infectious diseases. From 1 day old to 21 days old, norfloxacin and ciprofloxacin were added to feed or drinking water to prevent bacterial diseases, and from 15 days to 70 days old, Maduratomycin and Tamijing were added to feed to prevent coccidiosis.