Problems that should be paid attention to in broiler breeding

? First, the choice of chicken seedlings

Some broiler breeders only pay attention to the price of chicken seedlings and ignore the quality of chicken seedlings. The quality of chicken seedlings is the basis of successful breeding of broilers, and the ideal feeding effect can only be achieved by selecting and purchasing healthy chickens with excellent quality. The quality of chicken seedlings has a direct impact on the growth of broilers and the economic benefits of breeding farms. Therefore, it is necessary to select good quality and high reputation breeding places to supply chicken seedlings, eliminate diseased chickens with symptoms of omphalitis and white dysentery, eliminate weak chickens and residual chickens, and strictly prevent the purchase of inferior chicken seedlings.

? 2. Feeding methods

At present, many farmers adopt the method of raising on the ground, which is easy to make chickens catch cold and cause diarrhea and other symptoms, which is not conducive to the control of intestinal diseases, especially colibacillosis and coccidiosis. The adoption of "online shelf breeding" has the advantages of saving bedding materials, reducing the incidence of coccidiosis and colibacillosis, reducing stress, being easy to control the environment, and making the chicken supply temperature evenly, which is beneficial to growth. it is best to raise broilers in scaffolding and plastic net.

? Third, the mode of heating

Coal-fired heating is a common heating method for raising chickens in rural areas at present. However, when coal is burned, it will consume a lot of oxygen and produce too much harmful gases such as carbon dioxide, carbon monoxide and hydrogen sulfide, which seriously reduces the air quality in the house.

The problems are mainly manifested in several aspects:

1. The quality of coal burning is too poor and there is a lot of smoke.

two。 Resulting in excessive carbon dioxide in the house.

3. Inadequate combustion of coal leads to the production of carbon monoxide

4. A large amount of oxygen is consumed, resulting in lack of oxygen in the house.

It is best to use hot Kang, heating or hot blast stove for heating.

? IV. Ventilation

In the early stage, we should not only pay attention to heat preservation, but ignore ventilation. Due to high temperature, dirty and dry air and flying dust, it is easy to cause foreign body bronchitis, bronchitis, pneumonia and pneumonitis. Ventilation design should leave a skylight and rise about 60 cm above the roof ridge, which is conducive to the discharge of ammonia and other harmful gases, but also prevents a large amount of air from the skylight from pouring back into the house, so that the doors, windows and skylights form a good ventilation route. it is more helpful to discharge the foul air in the house in time. In the later period, while strengthening ventilation, we should not neglect the work of heat preservation, especially in the season of chicken disease, bad weather and large temperature difference between day and night.

? 5. Master humidity

The high temperature of the rearing room often results in low relative humidity in the brooding house, too low humidity during the rearing period, dry air in the house, flying dust, easy to stimulate the drying of respiratory mucosa, weakening resistance, and pathogenic bacteria are inhaled by chicks with dust flying, injuring respiratory mucous membrane, causing cilia peristalsis inactivation or shedding, pathogens enter the airbag through the respiratory tract and are easy to be infected with respiratory diseases and colibacillosis. The humidity in the chicken house is too small, which can easily cause a large amount of moisture loss in the chicken body, dry villi, decreased appetite and increased thirst, resulting in chicken dehydration. Therefore, it is also important to master the humidity in the henhouse when raising chicks, and keep the relative humidity in the brooding room between 60-70%. Practice has proved that humidity greater than 80% or less than 40% will have adverse effects on the growth of chickens. When the humidity is too small, measures such as sprinkling water on the ground, spraying in the air, and adding water basins on the stove can be used to increase the humidity.

? Pay attention to chick selection and grouping breeding

Chick selection and group feeding are important factors to ensure the health and uniform growth of chickens.

1. Chick selection

The first selection of chicks should be carried out when the chicks arrive in the nursery, and the weak chicks and chicks should be isolated and fed separately, and the residual chicks should be eliminated to purify the flock; the second selection of chicks should be carried out at the age of 6-8 days, or when the chicks are immunized for the first time, the chicks with small size and poor growth can be isolated and fed separately.

two。 Group feeding

The physiological basis of different male and female broilers is also different, so the requirements and responses to environmental and nutritional conditions are also different. For example, the growth rate of the rooster is fast, while the growth rate of the hen is slow, and the weight difference in 56 days is about 27%; the weight growth rate of the rooster decreases after 8 weeks of age, while the weight growth rate of the hen decreases after 7 weeks of age, which should be listed separately according to the economic benefits. Therefore, broilers had better be raised in male and female groups, and the dietary level can be adjusted respectively after male and female groups to better improve the feed utilization rate.

? VII. Material restriction and water control

In order to prevent broilers from growing too fast, feed can be properly controlled before 20 days of age to prevent nutritional and metabolic diseases such as ascites syndrome and sudden death. In the later stage, 1-2% garlic can be added to the feed, which can not only prevent enteritis but also promote food intake, and appropriately shorten the feeding days. During the onset of chicken disease, water can be controlled for 0.5-2 hours before treatment of systemic septic diseases such as colibacillosis, viral diseases, coccidiosis and so on. In addition, when chickens are immunized with drinking water, the water can be controlled for 2-4 hours. of course, the time of water control should also be based on the age, season, growth and drug half-life of the flock.

? VIII. Refueling

Changing feed too quickly will cause diarrhea, dehydration of the body, increase the ratio of feed to meat, and even cause disease. The "transitional refueling method" is introduced as follows: suppose An is the front feed and B is the rear feed, both of which include different batches of feed at the same time.

The first method was as follows: 1-2 days of mixed feeding with An and B of 1-2 days, 1-2 days of An and B of 1-2, and 1-2 days of An of 2 and B of 2, then all of them were fed with B.

The second method was as follows: 2Compared with An and B for 2-3 days, and A with B and B with B for 2-3 days, and then all of them were fed with B.

The third way: 1Compact 2 A diet plus 1Compact 2 B feed for 3-7 days, and then all B feed.

The use of transitional feed is one of the ways to reduce the stress of changing materials.

? IX. Medication

The high drug cost of single chicken in broiler farming in rural areas is closely related to the unscientific and unreasonable use of drugs. It is mainly shown in the following aspects:

1. Single administration, ignoring the combined use of drugs.

two。 The drug dose is too small to achieve the therapeutic effect, and the drug poisoning is caused by large dose or long use time.