In the face of increasingly complex diseases, how does the pig farm do a disease diagnosis? – Pig Disease Forum – China Animal Husbandry Website – A useful animal husbandry website
Diagnosis is the most important task of the pig farm. It is an effective tool for preventing disease, reducing the epidemic of disease, and reducing economic losses.
In the diagnosis, we must first clear the occurrence and development law of pig group infection, then actively adopt symptomatic comprehensive prevention measures, ultimately result in better control.
As the current disease occurs, development is more complex, the disease is early and the development of the whole process, and the diseased pig group is the most severe in the stage after weaning.
, for example, early infection, when the young pigs before 60 days, there is often a high mortality rate, and some piglets have been in the early days, and they are gradually thin in the meat stage, and the growth is serious. Changes in evilness, the course of disease is very.
In addition, mixed infection or concurrent infection is increasing, a variety of pathogens have sustained infection and mixing infection in the pig farm, making the disease complicated, such as severely plaguing pig teaching disease syndrome produced by pigs in recent years, The disease involves complex pathogen mixed infections, hosting relationships between host, environmental and management, mortality often because of the feeding environment and management of pig farms, and presenting significant differences.
Frequent persistence and circulatory mixed infectious diseases of the pigs, the original swine fever, pseudohavis, blue ear disease, epidemic cold, vice pigs, bacilli, and atrophic rhinitis.
In this complicated case, if we can’t draw conclusions in time, hesitate, not decisively adopt related measures, the loss is inevitable.
Therefore, in order to quickly diagnose certain diseases as soon as possible, the preliminary diagnosis or even diagnosis can be made by recording, body temperature, heat, symptoms, examination, pharmaceutical, blood examination, etc.
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Record is an important part of the animal husbandry process, which can correctly guide our production and veterinary diagnosis. The study survey reflects the importance of records. Such as recording the variety, age, and hair of the pigThe disease, mortality, treatment, drug effect evaluation, etc., the more detailed, the higher the accuracy of the diagnosis of disease, the higher the record, and the comprehensive management level of the pig farm technicians can also be reflected.
In short, detailed record is the foundation of the correct diagnosis, is an important tool for improving the economic benefits of pig farms and reducing risks.
2, body temperature
The body temperature is an important indicator for judging the health of the pig. Most of animal infectious diseases have obvious laws, which can be divided into four phases: incubation, precursive period, obvious period and transition period.
However, in actual work, the incubation period of the disease is concealed, and there is almost no typical symptom of the disease. Sometimes the temperature will change, but it is easy to neglect in clinical happening. Best prevention and control time.
After a disease happened, when seeing a typical symptom, the epidemic has entered a clear period. At this time, it has known an epidemic, which is too late, and the loss is inevitable.
Through the measurement of conventional body temperature measurements and the onset, the dynamics of the disease can be understood as soon as possible, and the development of diseases in time will monitor the occurrence and development of the disease, and provide a strong basis for clinical diagnosis.
(1) Rule temperature measurement.
The normal body temperature of the pig is 38 ~ 39.5 ° C, but the normal body temperature is also slightly changed under various physiological conditions. Such as high in the summer, in the afternoon, high in the morning, after the feeding is high, childbirth is higher than the pregnancy, the piglet is higher than the adult pig.
After the law, the regular body temperature measurement is incorporated into the daily work, based on random measurement, each pig group is about 10%, and records, summary every day.
If there is 20% of the pigs in the aggregate process, it is necessary to cause alert to the alert. After seeing a certain disease infection, there is an incubation period, whether it is about to appear epidemic, whether it needs Immediately engage in different pathways and causes from other ways, whether it is necessary to take immediate prevention and control measures.
(2) Measurement during the onset.
Infectious diseases can be divided into three categories, namely viral infectious diseases, bacterial infectious diseases and parasitic infectious diseases.
For veterinary workersFor the disease, it is important to judge the infection of the pigs after the disease.
Viral diseases and bacterial diseases have a large difference in thermal temperature, and bacterial diseases are generally high in thermal temperature, especially some acute bacterial diseases, often in 41.5 to 42 ° C, such as pigs. Infected with Streptococcus, pigs, pig lung disease, infectious pleural pneumonia and other diseases can be as high as 42 ~ 43 ° C, which is high, and ultimately due to high heat to destroy the body’s immune system and various tissue organs, it leads to only acute death of pigs; The body temperature of viral disease is generally between 40.5 to 41.5 ° C, such as swine fever at 41.5 ° C, which is hot, so that it can be referred to by viral or bacterial infection from the body temperature.
(3) Fever is a response reaction when the body encounters the pathogenic microbial invasion is a body reaction with the struggle against pathogenic microorganisms.
The antipyretic is mainly western medicine, such as An Nai Nai, amino-biblin, etc. These antipyretics mainly act on body temperature regulation center, through nerve regulation, expand the blood vessels, sweat, and breathable Increase heat dissipation, and the body temperature returns to normal.
The side effects of the antipyretics are large:
1 Long-term use can produce granular leukocyte deficiency and leukocyte reduction;
2 Take the conference due to excessive sweating Emanence;
3 inhibit the formation of thrombin, there is a tendency to increase bleeding;
4 produce immunosuppressive.
Therefore, antipyretics must be used with caution in clinical practice. In the practice process, heat can be generated, i.e., microothermal (elevated 1 ° C), medium heat (elevated 2 ° C) and high heat (elevated 3 ° C).
When the pig is microeper, it may not be used;
When the body temperature rises to the heat, it is possible to appropriately consider the small dose using antipyretic or physical cooling;
When the body temperature rises to high heat, it can immediately use antipyretics and cooperate with symptomatic antibiotics, protect the body’s immune system and individual tissue organs.
It is well known that pigs are only sold from birth, and the entire growth process is 155 days, its growth curve (as shown in Figure 1 below)) Has been an upward trend.
The nutrients such as protein, vitamins, minerals such as pigs must be provided by high quality and full price, so the feeding capacity and growth curve are proportional to the relationship ( As shown in Figure 2 below).
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Therefore, the normally stable annual material is an important indicator for assessing the healthy growth of pigs, and provides a strong basis for early warning and prevention of pigs.
, such as piglets, infectious atrophic rhinitis, chronic respiratory disease, rarely cause death, but once infected, the pig’s daily consumption will be lower than normal, if no emergency prevention Measures, the growth rate of pigs will decline further, and even thin, negative growth, etc.
In actual livestock production, addition of some or several antibiotics in feed is one of the important measures against preventing and controlling diseases. Prerequisites are that the pigs must have better appetite to maximize drug treatment. the amount.
However, most farms have not caused attention or paying attention to the short decline of disease feeding capacity due to technical and management conditions. When it is developed to the desirable decline in food, they know the seriousness of the problem. , Lost the best prevention and control time.
How does the pig farm know that the feedthrough volume of the pig group decreased in the first time, exemplified: a pig farm has a farmhouse’s workload of 1000 pigs, normal daily consumption 2kg / head, Daily consumption 2000kg, if each pig is only 50g, then the total consumption of the daily consumption is 50kg, accounting for 2.5% of the total daily consumption, many people think that it can be completely ignored, but according to the pig only curve From the perspective, you can suspect that the pigs are in the unstable state. At this time, you need to find the reason now.
Of course, there are many factors that cause falling volume of pigs, such as diseases, mold infections, environment, climate, immunity, raw materials, formulations, transfer groups, and other stress reactions, etc. The main factor in the decline is the environmentWhat causing, we have to improve the environment; We should reduce stress;
is caused by disease, then we can actively take treatment measures at this time, Control in the germination state.
Therefore, it is possible to understand the health growth dynamics of pigs in the production of pigs to consume reference values.
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