Chaiji precautions

How to supplement free calcium chicken?
Although free-range chickens are able to feed freely, calcium still needs to be supplied in sufficient quantities from rations. Otherwise, the chickens will have osteoporosis, abnormal posture, and produce soft-shelled eggs, thin-shelled eggs, or shellless eggs. The damage rate of eggs will increase. Egg production will also decline.

Chai chickens cannot feed high-calcium rations during the rearing stage. The calcium content in the diet should be controlled between 0.8% and 0.9%. As long as the development is normal, most of the free-range chickens begin to lay eggs around the age of 145 to 155 days. Therefore, a large amount of calcium supplementation should be started from this period. The utilization rate of calcium for chickens is about 55%, and the production of one egg requires 2.0-2.3 grams of calcium. Therefore, for each egg produced, the chicken needs to eat about 4 grams of calcium. According to this requirement, the calcium in the diet can be increased to 2% from the stage of opening to 5% egg production, and then gradually increased to the optimal level of 3.2% to 3.5%. If the ambient temperature is high, the feed intake of the chicken is reduced, and the amount of calcium can be appropriately increased.

Stone powder, shell powder and bone meal can be used as the main source of calcium during calcium supplementation. When buying, care should be taken that the particles in these raw materials should be large, and the less the better the powder, the better. Because of the long residence time of granular calcium in the digestive tract, calcium can be uniformly supplied during the eggshell formation stage. In addition, granular calcium can play a role in the stomach to improve feed digestibility.

Chicken immunity to drinking water

First of all, we must choose a regular production of vaccines, not random use of substandard products.

Second, 24 hours before and after immunization, potassium hypertonic acid or other drugs must not be consumed, and drinking water can not be cleaned with potassium permanganate or other disinfectants, to avoid drug residues affecting the immune effect, and sterilization can not be carried out with chicken spray to avoid affecting the immune effect.

Third, when diluting the vaccine, it is better to use distilled water or cold boiled water. It is not appropriate to use tap water to avoid affecting the quality of the vaccine. When diluting the vaccine, skim milk powder should be added, plus 2 grams per liter of water, and a vaccine protective agent can also be used.

Fourth, the water supply should be stopped for a period of time before immunization with water, so that the chickens are thirsty and the vaccine-containing water is consumed within half an hour to an hour. The time for stopping the water supply differs depending on the temperature. When the temperature is higher than 26°C, stop the water for 2 hours; when the temperature is lower than 26°C, stop the water for 4 hours.

Fifth, when drinking vaccines, be sure to have a drinker and wash it with clean water. Do not leave disinfectant or disinfectant. The drinking fountains are preferably made of plastic products, and the use of metal products containing more iron is strictly prohibited. When there is a large number of free-range breeding activities for the chickens, the number of drinking fountains is more than usual, and an average of 30 drinking vessels (10 catties/barrel) per 30 chickens.

Sixth, drinking water immunization must be used according to the vaccine, and vaccines suitable for drinking water immunity should be attenuated vaccines. However, Newcastle disease IV strain, clone 30 and other virulent vaccines cannot be immunized with drinking water. Seventh, when drinking water is immunized, the dose of the vaccine is two to three times larger than that of intramuscular injections, nasal drops and eye drops, but it should be properly controlled according to the type of vaccine and the frequency of drinking. It should be administered according to the product instructions or under the guidance of local veterinarians. .

How to improve the fertility rate of chicken eggs 1. The proportion of male and female chickens should be appropriate. The ratio of males and females is generally 1:15-20 for egg-type chickens, 1:12-15 for dual-use chickens, and 1:8-12 for meat-type chickens.

Second, adjust the age structure of the flock. The fertility rate of new chickens raised that year was relatively high. Therefore, the number of new hens should account for more than 70% of the number of chickens. Although the fertility rate of old hens is relatively low, the fertilization rate of better broiler eggs can still be achieved when new cocks with good quality are used. After one year of broiler rearing, the hens have the highest fertility. However, as the age increases, their fertilizing ability gradually declines. Attention should be paid to the timely elimination of old hens.

Third, feeding chickens should not be too large. When large groups of animals are raised, it is better not to exceed 300. When there are too many loose-breeding chickens, it is necessary to expand the playground accordingly so that the chickens can spread their activities and perform breeding to increase the fertility rate. Fourth, pay attention to strengthening the feeding cock. Roosters consume more energy during the breeding period. In order to make the rooster health and excellent semen quality, you can hang a higher food waste on the wall or in the cage (the height of the trough is not suitable for the hen to eat), which contains a mixture of high energy and high protein content. Feed, such as cornmeal, fish meal, silkworm meal, bone meal, etc. Green feed (radish, carrots, cabbage leaves, etc.) should also be fed regularly.

How to prevent the epidemic

For a long time, low-level breeding and extensive feeding and management have made the chickens less susceptible to disease and roughage, and most of the chickens have been used in the "four gardens" (orchards, tea gardens, mulberry gardens, and bamboo gardens). ) Free-range, environment away from pollution, help prevent disease. However, because of the long feeding period of the chickens and the long-term grazing in the wild, the chances of exposure to pathogens increase, and sometimes the “four gardens” crops are sprayed with pesticides to cause pesticide poisoning. Therefore, the epidemic prevention of free-range chickens cannot be ignored. . In addition to strengthening day-to-day management, such as strict disinfection and isolation to eliminate some diseases, drug prevention is a good way.

Newcastle disease vaccination

1) When the chickens were 7 to 14 days old and 25 to 28 days of age, they were given intranasal eye drops with a cloning 30 vaccine, and 1 million units of penicillin and streptomycin were added for every 500 chickens. Hada, Haitian, and Pushaping were also available. Lanxing and other mixed use. 2) Chickens were co-administered intramuscularly at a ratio of 1:1.5 using Newcastle disease virus I and clone I strains at 55 to 60 days of age. 3) When chickens were 125 days old, they were injected with new triple vaccines and flu shots, 0.5 ml each. 4) Chickens were injected intramuscularly with clone I for 306 days of age. 5) Drinking water with attenuated vaccine (type II or IV vaccine) at 440 days old (before slaughter).

I. Epidemic Prevention of Infectious Bursitis

1) The breeder has not inoculated the Bursal vaccine before laying eggs or has not inoculated the oil seedlings six months later. The offspring of the breeder were vaccinated with attenuated vaccines at the age of 5 days; if the breeders were inoculated subcutaneously with the attenuated vaccines Seedlings 0.2 ml/only, then no need to prevent the epidemic when the chicken is 15 days old and 32 days old.

2) If the breeder is inoculated six months after inoculation, the offspring may be dripping with attenuated vaccine at 14 days of age. If chickens were injected subcutaneously with 0.2 ml of oil seedlings each time they were inoculated with attenuated vaccines, the chickens would not be vaccinated at 24 days of age.

3) In the outbreak area of ​​bursal disease, the chickens were treated with high-immunity egg yolk at 1 day of age, and the effects were better when they were immunized 5 days, 15 days, and 32 days old.

4) When the commercial chickens are used on the 1st, 7th, 14th, and 21th days of age, they will be treated with high-immunity egg yolks and they will be free from epidemic prevention in the future.

Second, Marek disease prevention

1) The chicks were injected with Marek's disease vaccine within 24 hours after hatching.

2) Strictly sterilize eggs, incubators and hatching rooms; sterilize the premises and utensils strictly.

3) Chickens imported from high-risk areas are required to supplement the second Marek’s disease vaccine.

4) Keeping animals within 1 month of hatchlings should avoid isolation and must be isolated. 5) Once the disease has occurred, the diseased chickens should be eliminated immediately. The threatened chickens should be treated with Ji Kang's bulk mix and disinfected with Anli 2000 to strengthen prevention.

Third, bird flu prevention chickens are 20 days old and 120 days old, half a year old to produce eggs or quickly enter the high season of flu, and once every half a year of egg drop oil seedlings inoculated with each type .

Fourth, chicken pox prevention chicken 15 to 35 days of age, 90 to 140 days of time when the thorn species of fowl pox vaccine, 4 to 5 days after the sting at the seedlings show that effective, the protection rate is generally 100%. For parasitic diseases of chickens, only the improvement of the feeding environment, the strengthening of nutrition and the disinfection of feeding tools are the most effective ways of prevention.

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