Clinical diagnosis and identification - three steps for the diagnosis of swine diseases
Disease is more important than prevention is not more than governance, emphasis on the concept is not emphasis on experience, but the level of domestic farming is limited, pigs accept the new concept is slow. Some pig farmers have been bragging pigs for 10 years (less than 20 sows), have seen many diseases, and claim to have rich experience, but they have not seen any development on the scale or reduction in the number of dead pigs. Gein has always earned a living allowance. Only. Today, I don’t say “how the concept should be changedâ€, and I don’t say “how do I need to do a good job in prevention?†to say “clinical diagnosis and identification†after the onset of a pig.
Description: The following is a general case, non-exceptional cases, such as part of the data error or argument error, please correct me.
The first step: see the mental state
Needless to say this, if the mental state is normal, ignore it, with them overturning the earth, if the mental state is not good, turn to the second step - body temperature observation.
Step 2: Look at body temperature
Not all elevated body temperatures require treatment. Increased body temperature is a defensive manifestation of the body's resistance to pathogenic invasion. There is no problem with a rise in body temperature in the short term, and fever is required for a continuous increase in body temperature. The normal body temperature of the pig is 38.5°C, and the body temperature 38-40°C measured with a thermometer is also within the normal range. A body temperature of 40°C is slightly increased, but it is 40°C for consecutive days, which can be regarded as an increase in body temperature.
So how do you identify clinically by increasing body temperature?
1, high fever: body temperature exceeds 41 °C
Taking into account the accuracy of the thermometer, 40.5 °C is also considered high fever. This situation is usually infected with a virus, and occasional acute bacterial infections can also cause high fever. Therefore, the scope of the disease has been reduced, such as flu, pseudo-mad, acute swine fever, parasporosis, paratyphoid and so on.
2, in the burning: body temperature below 41 °C
At 40.5°C, it is usually due to a bacterial infection, but mild swine fever is also a symptom of low-grade fever.
Observing Temperature Purpose: To determine if the pig is infected with a virus or a bacterial infection.
The principle of playing back the needle: fever above 41 °C, observed 2-3 days without fever, indicating that the pig itself can not resist, needle cooling. Increase body temperature by 40-41°C. Observe for 2-3 days. If fever does not occur, consider needle cooling. Below 40°C, for several days, it is not recommended to rush back the needle.
The third step: see the stool
There are two kinds of excrement in appearance: one is diarrhea and the other is constipation. There are two types of diarrhea: a watery diarrhea and a paste. Among them, watery diarrhea was found mostly in viral infections, and pasty diarrhea was mostly seen in bacterial infections. In addition to constipation, in fact, constipation does not have much guiding significance, because high fever generally leads to pig constipation, but in special circumstances constipation has a very effective guiding significance. Situation 1: Dry spherical bake is covered with a layer of oil, most likely found in mild swine fever. Situation 2: There is blood in the stool and guidance is also very important. Such as blood stasis (induced by Treponema), ileitis (Clostridial), rectal prolapse, acute gastroenteritis, paratyphoid (pigs).
Therefore, using the two indicators of body temperature and excrement can greatly reduce the scope of the disease:
High-grade fever must have a viral infection and may also have a bacterial infection.
Low fever is generally a bacterial infection.
Watery diarrhea must have a viral infection and may also have a bacterial infection.
Paste diarrhea is generally a bacterial infection.
Then someone said: My pig has a high fever of 42°C and mushy diarrhea. Tell you: Well, basically, you said, can you have diarrhea with such a high fever? The above is an ordinary case, not a special case. Swine constipation and diarrhea will alternate, and some swine mild pigs do not perform well or even have a low fever, such as 40°C. The swine fever, also known as bad field temperature, is related to the progress of the rotten gut. Pig manure will have different performance. However, it is rare to see diarrhea under high fever.
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