Protective measures against respiratory diseases in chickens in autumn

Autumn comes, the temperature drops rapidly, respiratory diseases will exploit the loophole, respiratory diseases will lead to the chicken disease resistance, immunity decline, and then easy to cause some bacterial diseases and viral diseases, resulting in decreased production performance, breeding benefit loss.
So, what are the causes of respiratory disease in chickens?

1 Ventilation

The temperature drops rapidly in autumn, leading to the decrease of ventilation volume in a short time, and the chickens do not have a stage to adapt to it. After the decrease of ventilation volume, ammonia and carbon dioxide concentrations in the hen house rise, which is easy to cause respiratory diseases in the chickens. If the hen house temperature drops too low, the chickens will catch a cold and then induce respiratory diseases.

2 Management

Management is not in place, the adjustment of environmental control is not reasonable, or the use of a ventilation mode for a long time without adjustment, resulting in problems of chickens; When symptoms of respiratory diseases appear, people do not take measures to adjust them and think that respiratory diseases are too common to be taken seriously. It is precisely this kind of psychology that often leads to big problems. Respiratory diseases are easy to be followed by colibacillosis.

3 Stress

When the temperature drops within a short period of time, it will bring great stress to the chickens. The typical effect is that the egg production rate will suddenly drop, and then recover a few days later. Another is immunity. Do not immunize the chickens when the resistance is low, which is easy to cause respiratory diseases. On the other hand, do not immunize the chickens by aerosol after the detection of obvious respiratory diseases, so as to avoid harm to the chickens, and the immune effect is relatively poor.

Countermeasures:

1 Ventilation adjustment

Before the temperature drops, prepare the environmental control adjustment plan in advance, so that the chickens have time to adapt to the transition smoothly. The temperature difference between day and night is large, and the attention points are different between day and night. In the daytime, more attention is paid to the highest temperature, and the body temperature of the chickens is the core, while the attention is the minimum ventilation volume at night. Frequently turn the coop, especially after ventilation adjustment, ventilation volume and temperature should be balanced well, in addition to the ventilation system data matching, must go to the actual coop inspection, to see whether the small window into the wind is not symmetrical, blowing chicken, before and after the temperature difference is not big, coop sealing is not done, there is no place into the thief, there is not appropriate place to adjust in time.

2 Management

After cooling down, the night to auscultation of respiratory diseases, calculate the proportion, if it has happened, appropriate medication, rational drug use, grasp the timing of medication do not delay; In addition, we must strictly implement the biosafety system, do a good job in cleaning up, killing rodents and driving birds, improve the disinfection process, strengthen the disinfection of chickens and the external environment and air inlet, and cut off the transmission of pathogens; Arrange the immunization time and choose the time when the temperature is suitable and stable to avoid the weather fog immunity of sudden rise and drop of temperature and ensure the immunization quality.

3. Improve physical Fitness

In addition, it is also necessary to pay attention to whether the feed formula is reasonable and whether various nutrients meet the needs of the chickens. If the feed quality is poor, the energy is insufficient, the basic protein is insufficient, and the daily needs of vitamins, amino acids and trace elements are insufficient, the metabolism of chickens will be greatly affected. Comprehensive consideration should be given to whether the nutritional additives meet the needs under various kinds of stress, because stress will affect the feeding of chickens. If necessary, nutritional supplements should be used to promote feeding, resist stress, and avoid the decrease of feed intake and the superposition of stress.