Pigs die suddenly, look for these 9 causes first!

Most of the sudden death diseases are bacterial diseases, and most of the free-range animals with poor management and hygiene are distributed. Sudden death is mostly sporadic or sporadic. There is basically no sudden death type in intensive pig farms due to good management and the use of prophylactic antibiotics.

Viral diseases often have the typical process of infectious diseases, whether acute type, subacute type, chronic type, mild type, subclinical type, can often go through latent period, prodromal period, symptom obvious stage, recovery or recovery period.

Viral diseases are rarely seen in the most acute sudden death cases. (just as diarrhea is rare in high fever pathology. High fever leads to the reduction of moisture in the body, and diarrhea is not easy to cause. The symptoms of high fever with diarrhea can be reported as an isolated case, or transient, or those with lever lifting insist. )

1. Porcine lung disease (Swine plague)

An acute infectious disease (porcine pasteurellosis) caused by Pasteurella multocida, commonly known as "throat locking wind" and "swollen neck plague". It has pathogenicity to many kinds of animals and per capita, and pigs are the most susceptible. The sudden death of porcine lung disease is instantaneous death, which is the fastest sudden death. Everything was normal before death, but he died in the blink of an eye. There was no latent phase, prodromal phase and any pathological changes.

two。 Porcine listeriosis (Swine listeriosis)

It is mainly caused by Listeria monocytogenes, which is a common infectious disease among humans, livestock and poultry. Pig is an infectious disease characterized by meningoencephalitis, septicemia, mononucleosis and abortion in pregnant sows.

The sudden death of listeriosis in pigs is to watch helplessly die. In the poor agricultural areas where pigs are raised in the manure, there are often folk rumors of sudden death of people and animals for many years.

3. Pig erysipelas (Swine erysipelas; Diamond-skin disease)

An acute febrile infectious disease that occurs mainly in pigs. It is caused by mycelium erysipelas. Acute type shows septicemia, subacute type appears purplish red rash on the skin, chronic type mainly occurs endocarditis and arthritis. Occasionally seen in other livestock and poultry.

Pigs with acute septic swine erysipelas die suddenly without any symptoms. The sudden death of pig erysipelas is often caused by overnight death. Late at night, the pig was still alive, and his eyes sparkled in the flashlight. Check in the morning, the pig has been dead for a long time. 4. Classical swine fever (Swine fever; Hog cholera)

It is an acute, febrile and contagious infectious disease caused by classical swine fever virus of the family Flaviridae. It is highly contagious and deadly.

The most acute form of swine fever is very acute and dies suddenly. Swine fever with sudden death is often among the affected groups, and there is an endemic epidemic around it.

5. Piglet edema disease (Piglet edema disease)

Most of the piglets occurred before and after weaning, sometimes a litter of piglets suddenly got sick and died quickly, and sometimes only 1-2 piglets died suddenly. The main manifestations are head edema, rotation, hoarseness, lower limbs and purple ears. Postmortem examination showed edema of gastric curvature, mesenteric edema, enlarged lymph nodes and bleeding spots in parenchyma organs.

In fact, the sudden death of this disease is a long illness, but the process of death is short. If this is also called sudden death, the process of death after a long illness such as Clostridium enteritis (piglet red dysentery), porcine transmissible gastroenteritis epidemic diarrhea, rotavirus infection, mycotoxin poisoning and so on can also be called sudden death.

6. Porcine infectious pleuropneumonia (Transmissible pleuropneumonia of swine)

Also known as Actinobacillus pleuropneumoniae infection, or Haemophilus pleuropneumoniae infection.

The most acute cases often suddenly fall to the ground and die, with reddish foamy fluid flowing out of the mouth and nose; in acute cases, the body temperature rises to more than 42 ℃, and it is extremely difficult to breathe, and the reddish foamy fluid flows out of the mouth and nose and dies within hours. Postmortem examination showed that the trachea and bronchi were filled with reddish foamy fluid, the lungs were purplish red to dark red, the pulmonary serosa had cellulose exudation and attachment, and the pulmonary lobular interstitium widened.

7. Piglet white myopathy (Piglet white muscle disease)

Due to selenium and vitamin E deficiency, most of them occurred in piglets within 2 months of age. The sick piglets had a healthy appearance and good nutrition. Under the influence of stress factors, they suddenly screamed and died suddenly. The autopsy showed that the skeletal muscle (especially the hip and thigh muscle) was dark in color, with gray-white stripes, radial stripes on the diaphragm, mulberry-shaped appearance of the heart, enlarged, hard and brittle liver, rough surface and betel nut-like patterns on the cross section.

8. Porcine intestinal bleeding syndrome (Enteric haemorrhage syndrome)

Due to stress, 6-9-month-old boars and fat pigs will die suddenly. Postmortem examination showed that there was a large amount of blood in the small intestine, and the bleeding usually extended from the ileum to the entire small intestine and large intestine, but no obvious bleeding site was found.

9. Porcine sudden death stress syndrome (sudden death stress syndrome of swine)

After intense stimulation, he died suddenly without showing any symptoms. For example, boars are overexcited during breeding, too frightened during chase, overcrowded during transportation, etc., all of which may lead to sudden death due to nervous tension. (source: Chinese farming)