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Senior veterinarian: teach you how to make a scientific diagnosis of pig disease

Senior veterinarian: teach you how to make a scientific diagnosis of pig disease

(Summary description)In 015, pig raising was basically profitable, and the loss time was only two months, and this boom cycle of pig raising may continue in 2016.

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In 015, pig raising was basically profitable, and the loss time was only two months, and this boom cycle of pig raising may continue in 2016.

 

But for large-scale farming enterprises, although pig farming can make money now, they have already begun to plan ahead and actively expand downstream slaughtering and retail channels.

 

【Data】

 

Last year, pig raising was a loss for only two months.

 

2015 2015 is a good year for pig farmers.

 

According to the data released by Zhuochuang Information, the national pig food parity ratio in the last week of 2015 was 6.86: 1. Based on the current prices and costs, the future pig breeding heads will make a profit of RMB 371.91.

 

From the annual pig-to-feed ratio monitoring data, after the Chinese Lunar Year 2015, pigs turned losses for the first time. The peak profit of pig raising throughout the year appeared at the end of August last year, when a pig could earn 645.14 yuan, which is 1.73 times the current figure.

 

Although the income has fallen from the end of August, the pig-to-feed ratio monitoring shows that the loss of hog farming in 2015 was only two months. Before that, pig farming experienced losses of up to two years.

 

Wang Zhuocheng, an analyst with Zhuo Chuang, said that raising pigs to make money in 2015 was mainly because pig prices were generally maintained at a relatively high level.

 

In the process of raising pigs, the disease is more important than prevention than treatment, and more important than concept than experience. However, domestic breeding is limited, and farmers are slow to accept new concepts. Some farmers have been bragging and raising pigs for more than 10 years (less than 20 sows). They have seen a variety of diseases and are known to have rich experience. That's it. Today, I don't talk about "how to change my concept", or "how to prevent it in normal times", I will say "clinical diagnosis and identification" after the onset of pigs.

 

Note: The following is a general case, not a special case. If some data is wrong or the argument is wrong, please correct me.

 

Step 1: Look at the mental state: Needless to say, if the mental state is normal, ignore it, follow them up and down, if the mental state is not good, go to the second step-temperature observation.

 

Step 2: Look at the body temperature: Not all body temperature rises need to be dealt with. Body temperature rise is a defense performance of the body against pathogen invasion. There is no problem with body temperature rise in a short period of time, and continuous body temperature rise requires fever reduction . The normal body temperature of pigs is 38.5 ° C, and the body temperature measured by a thermometer is 38-40 ° C, which is also a normal range. The body temperature rises slightly to 40 ° C, but it is 40 ° C for several consecutive days.

 

So how to conduct clinical identification through elevated body temperature?

 

1 high fever: body temperature exceeds 41 ° C. Taking into account the accuracy of the thermometer, 40.5 ℃ is also considered a high fever. This is usually a virus infection, and occasionally acute bacterial infections can also cause high fever. Therefore, the scope of the disease has been reduced, such as influenza, pseudomania, acute swine fever, paraswine, and typhoid.

 

2 Medium burn: body temperature is below 41 ° C. 40.5 ° C is also considered, usually caused by bacterial infection, but mild swine fever is also a symptom of low fever.

 

Observation of temperature Objective: To make a preliminary characterization of whether a pig is infected by a virus or a bacterium.

 

Principles of antipyretic needle: The body temperature rises above 41 ° C, and no fever is observed for 2-3 days, indicating that the pig itself cannot resist, and the needle is used to cool down. Body temperature rises 40-41 ° C, observe for 2-3 days, if you do not have fever, consider applying a needle to cool down. Below 40 ℃, observe for several days, it is not recommended to rush the fever needle.

 

Step 3: Look at the stool

 

There are two types of faeces: diarrhea and constipation.

 

There are two types of diarrhea: a watery diarrhea and a paste. Among them, watery diarrhea is mostly seen in viral infections, and pastegy diarrhea is mostly seen in bacterial infections. Besides constipation, in fact, constipation does not have much guiding significance, because high fever generally causes pig constipation, but constipation has very effective guiding significance under special circumstances. Case 1: The dried globular dried stool is covered with a layer of oil, which is mostly found in mild swine fever. Case 2: There is blood in the stool, and the guiding significance is also very important. Such as hemorrhoids (caused by Treponema pallidum), ileitis (clostridium), prolapse of the anus, acute gastroenteritis, paratyphoid (piglet).

 

So using two indicators of body temperature and stool can greatly reduce the scope of the disease:

 

High fever must be infected with virus, and may be mixed with bacterial infection.

 

Low fever is usually a bacterial infection.

 

Watery diarrhea must have a viral infection, and may be mixed with a bacterial infection.

 

Pasty diarrhea is usually a bacterial infection.

 

Then someone said: My pig has a high fever of 42 ° C and mushy diarrhea. Tell you: that's basically nonsense, such a high fever can still have diarrhea? The above is a general case, but not a special case. Swine fever, constipation, and diarrhea may alternate, and the performance of some mild swine mild pigs is not obvious, even low fever, such as 40 ° C. Swine fever is also called rotten field temperature, which is related to the progress of rotten intestines, and pig manure will behave differently. However, diarrhea is rarely seen under high fever.

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