Yudong Native Chicken Stocking Technique

Yudong Native Chicken is an excellent local breed in the border area between Sulu and Yuzhou. It belongs to egg and meat type, has a high egg production rate, and has good egg quality, tender meat, delicious taste, and is favored by consumers. Yudong Native Chicken also has the characteristics of small size, beautiful appearance, resistance to rough feeding, strong disease resistance, and is suitable for stocking. The current stocking techniques for Yudong chickens are described below:

First, brooding

1. Brooding time and methods

Yudong chicken brooding is generally selected in the spring (from March to May). During this time, the climate is dry, the temperature rises and there is plenty of sunshine, which is conducive to the growth of chicks. Ground chicken brooding uses litter on the ground in random range, and wheat straw and wood chips with a thickness of about 6 cm are used as litter on the brooding room floor. The chicks live on litter during the entire brooding period, and the litter is replaced after the brooding.

2. Preparations before brooding

1 Trimming, disinfection and testing of brooding houses. The brooding house should be trimmed, sterilized and tested for temperature before each chickling. The ground of the brooding house was disinfected with 2% sodium hydroxide solution, all utensils were cleaned, and the brooding house and utensils were fumigated one week before the hatching. The temperature of the brooding house should be tested 2 to 3 days before the hatching. When testing temperature, raise the temperature of the brooding house to 32~35°C and check the chimney pipe for air leakage.

2 Preparation of brooding items. Brooders should have enough feed and necessary vaccines and drugs. The vaccine is mainly prepared for Marek vaccine, Newcastle disease vaccine, infectious bursal vaccine, chicken pox vaccine, infectious bronchitis vaccine and bird flu vaccine, etc. The disinfecting drugs are mainly prepared for 100 toxins, chlorhexidine and benzalkonium, etc.; anti-drugs and nutrition Drugs mainly prepare oxytetracycline, bacitracine zinc, chlortetracycline, electrolytic multidimensional, vitamin C, rehydration salts, and glucose. In addition, the necessary equipment must be purchased, including food plates, buckets, drinking fountains, disinfection equipment, and veterinary equipment.

3. The purchase of chickens

When purchasing Dongchi chickens, they generally require lively, powerful, uniform and uniform hair color. The individual's head is thick and has big eyes, eyes are convex, and they are struggling.

4. Feeding and water supply

Chicks from 0 to 6 weeks of age are fed with millet and chicken full-priced compound feeds, and can also be formulated on their own. Chicks should be fed for the first time 2 to 3 hours after the initial drinking. Chicks are fed 6 times a day at 7 days of age and every 3 hours from 6 a.m. At the age of 1 to 3 days, 1/3 semi-matured millet and 2/3 of the compound feed should be fed into pellets. Each time, 100 chicks should be fed with 1 additional egg yolk. 4 to 7 days of age should be fed by mixing 1/4 semi-boiled millet and 3/4 compound feed. After 7 days of age feed the full-priced compound feed in the chute. The supply of drinking water should be ensured at the same time. The initial drinking time of the chicks should be 24 hours after hatching. After 5% glucose drinking water is supplied for the first time, warm boiled water containing enrofloxacin is supplied, and tap water is supplied after 7 days, and water is supplied at a feed water ratio of 1:3.

5. Management

Brooding is the key link in the feeding of chickens. Strengthening density, temperature and humidity and light management are important measures to improve the breeding efficiency. In the first week of brooding, there were 60 birds per square meter, in the second week 50 eggs per square meter, in the third week, 35 eggs per square meter, and then 10 eggs per square meter. The temperature of the house is controlled at 32°C for the first week, then 2~3°C per week, until the temperature is 21°C, ie 0~1 33~30°C, 1~2 weeks old 30~27°C, 2~3 weeks. Age 27~24°C, 3~4 weeks old 24~21°C, and normal temperature after 5 weeks old. The relative humidity of the house should be maintained at 60% to 65%. Under the premise of not affecting the temperature, as much as possible to open the window ventilation, timely discharge of ammonia, hydrogen sulfide, carbon dioxide and other harmful gases, to ensure that the air inside the house is fresh, but to prevent the thieves. The lighting should be appropriate. During the brooding period, the lighting time is long and the light intensity is small. A 15- to 25-watt fluorescent lamp can be used to light the light. The daylight illumination is 23 hours, and the daylight intensity is reduced by 1 hour every 2 to 15 days, and the natural daylight after 16 days. Lights turn on at night only when feeding. The light intensity is controlled between 2 and 3 W/m2 before 15 days of age, and the light intensity is controlled between 0.7 and 1 W/m2 after 15 days of age.

Second, bred

1. Feeding. When broilers are stocked, they are fed one at a time each day at 7 and 18 o'clock, and the amount of feed each time is approximately 40 minutes. The amount of feeding accounts for about 40% of the daily feed intake. When there are more insects in midsummer, it can be fed with less feed. In addition, sand should be placed next to the chicken house for the chicken to eat, in order to train the digestive function of broiler chickens and improve feed digestibility. Every time you feed, you should supply enough water. Drinking water with tap water or clean well water is appropriate. When the weather is hot, add vitamin C to drinking water to relieve heat stress.

2. Management. During the growing period of the chickens, the method of “grazing + feeding” was adopted. The bred chickens were placed in fields, floodplains, and wasteland. The plastics nets were used to enclose the free-range areas to form a closed space. Usually, an area of ​​1 mu was a breeding unit. The net height is 1 to 1.5 meters, and each unit is stocked with 300 chickens. The chickens are allowed to feed freely within the fence and can get plenty of sunshine and fresh air, which is conducive to growth. The way, using whistling or tapping combined feeding to make the chicken form a conditioned reflex, so that after hearing the sound signal, it will automatically go home.

In order to fatten the market, the Yudong native chicken should focus on promoting the rapid growth of muscle and deposition of body fat after 8 weeks of age, increasing the chicken's fatness and improving the meat flavor. At this stage, we must appropriately increase the amount of dietary supplements and increase the metabolic energy of the diet. Add 1% soybean oil to the diet.

Third, the egg production management

After entering the laying period, it is necessary to create the necessary conditions for laying chickens. First, set up a nest box. Nests can be made of wood and are of a moderate size, allowing the chickens to come and go freely. The nest box should be placed in a quiet, sheltered place while preventing animals such as snakes from entering it. Secondly, a proper amount of soft hay is placed in the production nest and replaced regularly. During the production of eggs, appropriate supplements should be added, and appropriate amounts of soybean meal, grains, vitamins, and calcium and phosphorus should be added. The supplementation of calcium is particularly important. A calcium supplementation tank can be placed around the house, and bone powder, stones, etc. can be placed in the tank for chickens to eat freely. The feeding amount of each chicken during the laying period should be controlled within 60 grams, otherwise it will not only increase the cost, reduce the quality of the eggs, but also affect the wild chicken's wild foraging ability, thus losing the significance of stocking the chickens and reducing the market for the products. Competitiveness. Yudong chickens began to gradually increase the light time after they were raised to 100 days, and they increased by half an hour each week until they reached 16 hours. The light intensity is controlled at 11 lux. The time, intensity and color of light cannot be changed at will. The lighting facility uses an ordinary 60-watt incandescent lamp that is evenly distributed in the house. The height of the lamp is about 1.8 meters from the back of the chicken. During the laying period, eggs are collected once a day in the afternoon and in the afternoon to prevent eggs from being damaged and eaten by other animals or the chickens can feed themselves. In the early stage of laying, one egg can be set aside as an introduction egg and the chickens can be laid to produce eggs. Nest egg habits. Recovering wild nests in time can force chickens to lay eggs in nests.

Fourth, disease prevention

During the cultivation process, the entry and exit of personnel must be strictly controlled, and personnel must be disinfected before and after entering or leaving the chicken farm. Vehicles conveying the feed must be spray-sterilized before entering the market. During the rearing period, chickens must be sterilized once a week and within 10 meters of the surrounding area. At the same time, appropriate amounts of disinfectant should be added to the drinking water to kill pathogens in the water and improve the disease resistance of the chickens. Regular rodent control, removal of harmful insects, and driving of wild birds should also be carried out; sheds and aquaculture sites should maintain good environmental hygiene. Garbage and drug packaging bags should be collected and recycled in a centralized manner. Eradication of chickens, diseased and dead chickens should be promptly transported to off-site burial or incineration. . Preventing immunization is the key link in disease prevention. It is necessary to formulate an immunization procedure based on the prevalence of the epidemic in this area, and use the vaccine produced by regular manufacturers to immunize. The reference immunological procedures for the Yudong chicken were as follows: 1-day-old subcutaneous injection of Marek’s disease vaccine, 6-7 days of age with chicken Newcastle disease IV strain, bursal vaccine, and H120 seedlings mixed with drinking water, 15 days old neo-kidney 2886 Vaccine eye drops and intranasally inoculated, 21 days of age, attenuated IBDV vaccine and chicken Newcastle disease II line seedlings drinking water, 30 days old winged vaccinated chickenpox vaccine, and 35 days old infectious bronchitis vaccine drinking water. A 45-day-old subcutaneous injection of bird flu vaccine was used to intramuscularly inject Newcastle disease I strains or inactivated vaccines at 60 days of age and 110 days of intramuscular injection of the newly-reduced dual vaccine. When epidemics occur in surrounding chicken farms or on the farm, the above immunization procedures must be properly adjusted and used flexibly. In addition to strict health and epidemic prevention and prevention of immunization, drug prevention is indispensable. In the first week and the third week, enrofloxacin or oxytetracycline should be added to the drinking water. In the fourth week to the tenth week, anti-coccidial drugs such as ampoules and anti-ball kings should be added to the feed. Since the stocked chickens directly contact the feces and are prone to parasitic diseases, levamisole is commonly used to regularly deworm them.

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