Every spring, the frequent occurrence of diseases is an old topic. At this time, people say that this stage is the most active season for pathogens to reproduce and grow, and epidemic prevention should be done to enhance the body's resistance to prevent the occurrence and spread of diseases. That's right, but it's not new, and it can be used anytime, anywhere. When is not the best season for pathogens to multiply? Spring, summer, autumn and winter, when is there no disease? What's more, disease immunization and epidemic prevention work is the top priority of the aquaculture industry? Therefore, these views can be discussed, but they are not helpful for the prevention and control of seasonal diseases.
The occurrence of major diseases is inseparable from the two most basic conditions, that is, the climatic conditions of the growth environment and the physical factors of the body. The climatic conditions of the environment are not only the basic conditions for the growth and reproduction of pathogenic microorganisms, but also the basic conditions for the survival of animals. Suitable climatic conditions are conducive to the healthy growth and development of the body, and vice versa. This is common sense, and it is also an external factor in the occurrence of diseases. Therefore, the characteristics of diseases that occur in different seasons and in different places are different, which is also the reason.
There are many diseases in spring, which has a lot to do with the climatic characteristics of spring and the functional state of the body.
Spring, a season between winter and summer, is a season when the climate transitions from cold to hot, and the temperature difference changes dramatically. Although it is said that spring is warm, soft and comfortable, it is the season when everything grows and sprouts and sows. However, the alternation of hot and cold, the huge difference in temperature between morning and evening, will have a serious impact on the growth of organisms. Especially for our large-scale livestock and poultry, the insulation, cooling, ventilation and ventilation in the house have put forward a severe test.
When the temperature is too high, if the temperature is not cooled and ventilated, the bad gases of fecal fermentation and the excessive temperature will have adverse reactions to the body, but when the ventilation is not proper or the sudden invasion of cold air will lead to the onset of the body. And due to the different years of the year, the cold, hot, dry and humid in spring, the environment of the body is very different? Therefore, the spring disease is also more or more in other words, the spring disease is complex, the onset is frequent, and it is difficult to control.
For this spring's illness, it has its own peculiar side. First of all, this spring was cold and wet. Taking Jinnan as an example, until the stunning season, the minimum temperature is still below 3 degrees, 3-5 degrees lower than in previous years; Humidity is maintained at around 60%, which is about 20% higher than in previous years (it should be roughly similar across the country). This creates such a characteristic climate of cold spring. Fortunately, the insulation measures of the chicken coop are well maintained and do not cause large-scale diseases. Secondly, due to the cold and damp winter last year, the spleen and kidney of the body were deficient, which made the body's ability to resist cold significantly decreased.
From this, we can see that the disease characteristics of this early spring will be dominated by cold, wind, and dampness. Specifically, it is manifested in the following points:
1. Respiratory diseases: watery and thin phlegm, slow onset, low and deep respiratory tract voice, mostly mixed with gastrointestinal disorders. Affected by the external adverse climate, respiratory diseases can be aggravated; In some houses, the temperature is high, and the dry population in the house will be able to develop warm illness, but it will not be the mainstream.
2. Digestive system: normal appetite, but mainly watery stool, undigested feed stool, dark green loose stool, and some groups will have viscous yellow stool and yellow-green loose stool and other warm syndromes.
3. Related symptoms: peritonitis, perihepatitis, and balloonitis occur from time to time, but the symptoms are mild, and yellowish-white fibrinous deposits will only appear scattered in the abdominal cavity. There will be an increase in cases of follicles liquefiing and yolk falling into the abdominal cavity.
Based on such characteristics, what season will be the epidemic of pathogens? It is not so much the season when viral diseases such as Newcastle disease, avian influenza, and bronchitis are epidemic, but rather the season when salmonellosis is the basic disease and accompanied by other diseases. For this pathogenic condition and such disease characteristics. We may be able to help prevent the disease by starting with the following aspects:
1. Adjusting the microclimate in the chicken coop, timely and reasonable ventilation is a necessary measure. No matter what kind of chicken coop, natural ventilation or mechanical ventilation, direct wind invasion of the body is strictly prohibited. For natural ventilation, the vents should be located at leeward heights. For example, in an east-west chicken coop, the vents are located in the north, and in the north-south direction, the vents are located in the west. Due to the southeast wind in spring. and timely access to climate change information. Keep warm in time.
2. Clean up the manure frequently, keep the chicken coop dry and clean, and reduce the damage caused by bad gases to the respiratory system.
3. Timely supplement of vaccines to improve the body's immunity, although it is not the season for viral diseases, but it is not possible to ignore the harm of such diseases, especially due to the negligence of management, wind and cold stimulation as a trigger, it is easy to cause the invasion of avian influenza and bronchitis.
4. Warm and replenish the spleen, the spleen is the foundation of the day after tomorrow, the source of the biochemistry of the five viscera essence and qi, the spleen function is vigorous, and the viscera is full of essence and blood, then the disease resistance is strong. What's more, it is the constitution of spleen and yang deficiency at the moment, so there is no reason why we should not start from strengthening the spleen and invigorating qi and strengthening the acquired foundation.
5. Symptomatic**, prevention work is in place, and it is difficult to prevent major diseases from occurring. However, it is inevitable that the work will be negligent, and when a disease occurs, it should be based on the principle of matching the cause of the syndrome, identifying the syndrome, and disseminating the syndrome.
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