I. Breeding of black-bone chicken The black-bone cock was sexually mature as early as 15 weeks of age. The hens were sexually mature at 25 weeks of age and began to lay eggs. The hens reached the peak of egg production at 33 weeks of age. Usually cocks and hens are naturally mated and mated. The ratio of males to females is 1:10 for large-scale free-range breeding. When paired with cages, each cage had 7 animals and the ratio of male to female was 1:6. The natural life of black-bone chickens can reach more than 10 years, but the prolific breeding period is only 2 years. Formalin fumigation disinfection immediately after collection of eggs, storage after disinfection. The suitable temperature for egg storage is 10°C~15°C and humidity is 65%~70%. After storage for more than one week, transfer the egg once a day to prevent the adhesion of egg yolk and shell membrane. Normally, the small head of the egg is placed upright and the incubation period is 21 days. There are six incubation conditions: temperature, humidity, ventilation, turning eggs, continuation of eggs and eggs. The suitable temperature is 39°C; the humidity is 55% in the early and middle stages of hatching; the later period (19 days to 21 days) prevents the adhesion of the villi and eggshell membranes of the chicks to 60% to 70%; ventilation is maintained, and fresh air is supplied to the embryos; You must turn the egg and turn the egg every 3 hours. Stop turning the egg after the age of 18 embryos, turning the egg before and after the angle of 45. After 17 embryos need to cool eggs to cool, cut off the power, open the hatchery door, turn the fan as usual, the eggshell can be cool to 32 °C. Eggs are based on observing whether the embryos are normal. If they are found to be abnormal, find out the reasons in time to adjust the hatching conditions. Second, feeding and management of black-bone chicken Brooding feeding management. 0 to 6 weeks of age of black-bone chicken, to warm and warm, 1 week, 35 °C, weekly drop 2 °C ~ 3 °C, 6 weeks of age, 23 °C is appropriate. Suitable density is 50 eggs per square meter from 1 week to 2 weeks, 30 eggs per square meter from 3 weeks to 5 weeks, and 20 eggs per square meter from 6 weeks to 10 weeks. After the chicks enter the brooding room, they should drink water and drink water for 2 hours to 3 hours before eating. For the first feeding, you can use broken rice, millet, or pellets to eat. When chicks learn to drink water and feed automatically, they should try to have the chicks eat full-fledged, full-priced compound feed on the second day. The feed formulation for brooding period is: corn 60%, bean cake 24%, bran 5%, imported fish meal 6%, yeast powder 2%, bone meal 2.5%, salt 0.4%, trace element 0.1%, multidimensional pigment 10g, feed 6 per day ~8 times, 4 to 6 times a day after 3 weeks. Under normal circumstances, the chicks should be ventilated and ventilated from the fourth day, emit ammonia and carbon dioxide in the house in time, and create safe environmental conditions so that the chick population is not disturbed. Breeding and breeding of black-bone chickens. The 7- to 25-week-old broiler chickens were transferred to the rearing period and should be raised from cage to ground level. In order to facilitate the promotion of sports and promote growth and development, do not leave as a species of chicken as a commercial product, male and female separate management, flat raising to 100 ~ 150 as a small group. Feed formula: corn 64.5%, soybean cake 23%, bran 4%, imported fish meal 3%, bone meal 2%, salt 0.4%, yeast powder 3%, trace elements 0.1%, multi-dimensional 10 grams, 3 times a day. The stocking density under flat-keeping conditions was 10 per square meter at the age of 18 weeks and 7 per square meter after the age of 18 weeks. It should also be weighed periodically to increase the amount of feeding or the number of feedings below the standard, and vice versa. Feeding management of adult chickens. Supply sufficient nutrients, reduce nest eggs, increase fertility, and maintain cleanliness outside the shell. The peak of light during the production of eggs reaches 16 hours per day. For hens that have just embraced their nests, testosterone propionate can be injected immediately and 12.5 mg/kg body weight can be injected. Third, the black-butterfly disease prevention and control Prepare for chickens. Thoroughly clean the brooding house. Block rat holes, and then use 2% to 3% of fire alkali water spray disinfection, and finally sealed chicken house, fumigation with formaldehyde and potassium permanganate. After entering the chicken house, it is sprayed with 2%~3% of fire alkali water every month to disinfect once, weekly with 100 toxin or peracetic acid to disinfect the chicken in the house. Timely prevention of infectious diseases such as Marek’s disease, Newcastle disease, infectious bronchitis, and infectious bursal disease. 1 day old to 21 days old feeds or drinking water to prevent the bacterial disease by adding drugs such as norfloxacin and ciprofloxacin; 15 days old to 70 days old to add such drugs as Madurathromycin and Tetrachlor in the feed Prevention of coccidiosis.
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