What are the manifestations of swine lung disease? How to prevent it?

1) Symptoms: The most acute type has no symptoms and sudden death. Some have a body temperature above 42, have reduced appetite or no appetite, have a short, painful dry cough, and sometimes cough up purulent mucus with blood, and mucous or purulent nasal juice from the nasal passages. Difficulty breathing, often in a canine sitting position.

The neck and throat are red, swollen, and hard, and the inflammatory edema spreads rapidly, and some extend to the chest and forelimbs. Erythema appears behind the ears, on the neck, abdomen, inside of the limbs, etc.**. The cough becomes more and more severe as the disease becomes more severe, and it becomes more difficult to breathe, and finally he dies because he cannot stand up, and the mortality rate is about 70%.

In addition to acute sepsis, it can also manifest as a spastic dry cough, viscous nasal fluid mixed with blood, followed by painful wet cough, initial constipation, diarrhea, and later ** congestion or bleeding.

2) Prevention and control of this disease should be started from the following aspects: When the climate changes drastically or cold snaps, the pig house should be kept warm; When transporting long distances, avoid overcrowding, and pay attention to the cleanliness of drinking water and feed on the way to prevent pigs from starvation and excessive physical exertion. Pasteurella suis has the characteristics of very weak resistance to general disinfectants, and should often disinfect the pig house and all feeding management tools with lime water.

At the time of weaning, inject the porcine pneumonic vaccine in time. At the onset of the disease, the sick pigs were immediately isolated, strictly disinfected, and streptomycin was injected intramuscularly, 1 million units were injected into large pigs at a time, and half were halved in small piglets, and 2 3 times a day were injected. If injected with penicillin, it can increase the efficacy.

The amount of penicillin used in piglets is 400,000 units; The dosage of large pigs is 800,000 1 million units, injected 2 3 times a day.

Porcine lung disease, commonly known as "lock throat wind" and "swollen neck plague", is caused by Pasteurella multocida. In spring and autumn, sudden climate changes often occur, generally sporadic and sometimes endemic. It is pathogenic to a variety of animals and humans.

Acute cases present with high fever, acute pharyngitis, high degree of neck redness and swelling, dyspnea, often in a dog-sitting position, elongated head and neck breathing, and foam from the mouth and nose. Chronic cases are characterized by symptoms of chronic pneumonia and gastritis.

To prevent and control this disease, it is necessary to insist on the vaccination of healthy pigs in spring and autumn every year, and the dual inactivated vaccine of swine erysipelas and swine lung disease or the inactivated vaccine of swine lung disease can be used. Antibiotics**, penicillin, streptomycin, tetracycline and sulfonamides can be used to prevent the disease. In large groups**, antibiotics can be mixed into drinking water or feed and fed.

The typical symptoms of the disease are redness and swelling of the neck, dyspnea, scattered onset of fat pigs, and high mortality. How can it be prevented? Actually, it's quite simple.

The author explains the disease to everyone in this article. Porcine lung disease, also known as "lock throat wind" by many farmers, is caused by pig infection with Pasteurella multocida. Pigs at all stages are susceptible to infection, especially those in the fattening stage.

This bacterium can infect a variety of animals, including humans. Infection in pigs is called swine pneumonia, and infection in cattle is called bovine failure (hemorrhagic sepsis). Rabbits, chickens, ducks, and sheep are also susceptible to infection.

Infected livestock and poultry are the main source of infection, with excreta, secretions, and contaminated feed, drinking water and utensils all being transmitted through transmission. Pathogens from coughing and sneezing are most likely to infect other animals and may also be spread through wounds and blood-sucking insects. Therefore, there are two main reasons for the high incidence of this disease in summer, one is the stress of the hot and humid environment, and the other is the infection caused by flies and mosquitoes that carry the pathogen.

In addition, some unhealthy factors such as chronic malnutrition, long-distance transportation, parasites, and poor sanitation can contribute to the occurrence of this disease. According to the symptoms, swine lungplague can be divided into three types: acute sepsis, acute and chronic. The most acute blood type:

Symptoms of sepsis, often with sudden onset and rapid death. Some pigs after being infected ate well on the first night and did not see symptoms. <>

The next morning, they were found dead in the pigsty. The main cosmetic symptoms are redness, swelling and warmth in the throat below the neck, which is difficult to reach in the hands, and severe redness and swelling that extends to the ears and chest. If it is slightly chronic, there will be a high fever of 41 -42, wasting food, and you can't lie on the ground, or take the sitting position of a dog, stretch your neck to breathe, and white foam will flow from your nose and mouth.

After one to two days, the mortality rate is close to 100%. An autopsy revealed acute hemorrhagic edema in the throat with a lot of translucent, yellowish fluid. Acute type:

Pig lung disease is slowly infected, and it dies within 4-6 days if it is not timely. This is a common swine lung disease. The body temperature is generally between 40 and 41.

It started out as a dry cough, but then it became a wet cough. Difficulty breathing, a sticky nasal discharge, and sometimes bloodshots. Although there is no noticeable redness and swelling on the neck and chest, the pig will feel pain after contact, with some purple spots or small bleeding spots on it.

In the end, he was too emaciated to go undercover, suffocated to death, and was exhausted. Autopsy reveals fibrinous pneumonia on one or both sides, with enlarged, solid, dark red or grayish-red lesions in the lungs, which are markedly different from normal pink. Chronic type:

Chronic swine pneumonia is mostly manifested as symptoms of chronic pneumonia, poor spirit, poor appetite, persistent cough and wheezing, a small amount of thick secretions in the nasal cavity, and gradually thinning. If not timely**, the patient will die of exhaustion in about two weeks, with a mortality rate of about 65%. <

First of all, it is necessary to inject vaccines in time, and at this time you can also take some special drugs, and then you also need to control your diet, and you also need to ensure the environmental health of the breeding base.

First of all, you should eat some medicines, and at the same time, you should drink more water, and you should give some vaccines to pigs, and you should also pay attention to giving pigs some sterilization drugs at ordinary times.

To change your breeding environment, you should take measures to keep warm and disinfect it every day. To feed the feed reasonably, you can supplement some green feed, you can also supplement some full-price feed, regularly check and prevent the epidemic, but also do a good job in the isolation of sick pigs, you can give the pig some epidemic prevention drugs are OK.

In the later stage, we must pay attention to sanitation and disinfection, and we should also clean up the pig farm in time, and we should also give antibiotics to the pigs, and we also need to check and **, and we should also observe the situation of the pigs at any time to check whether there is any abnormality.

Answer: (1) **The most acute case is often too late due to the acute onset of the disease, and the sick pig has died. Penicillin, streptomycin and tetracycline have certain curative effects on swine lung disease.

Antibiotics are used in combination with sulfonamides, such as tetracycline + sulfadimethazine, tylosin + sulfadimethazine, which is more effective. 914 also has a certain effect on the disease, generally acute cases can be injected once, if necessary, it can be repeated once every 2 3 days.

2) Prophylaxis Preventive immunization. In spring and autumn every year, we regularly use porcine lung disease aluminum hydroxide formaldehyde vaccine or porcine lung disease oral attenuated bacteria for 2 immunizations. It can also be used as a swine erysipelas, porcine lung disease aluminum hydroxide double vaccine, swine fever, swine erysipelas, swine lung disease attenuated triple vaccine.

Antimicrobial drugs are contraindicated for a few days before and for 7 days after vaccination. Improve feeding management. Early weaning is advocated when conditions permit; Adopt all-in, all-out production procedures; Closed herds to reduce the number of pigs drawn from the outside; Reducing the density of pigs, etc., will help to control the disease.

Pharmacological prophylaxis. For frequently ill pig farms, antimicrobial drugs should be added to the feed for prevention.

The prevention and treatment of this disease should be based on prevention, and comprehensive prevention and control measures should be taken. In addition to strengthening feeding management, keeping the pig house clean and disinfecting regularly, preventive injections should also be done to find sick pigs and leave them in time.

1) Planned immunization: breeding boars and breeding sows are injected with swine pneumonic disease vaccine once a year in spring and autumn; Fattening pigs are generally injected with pig lung vaccine once at about 60 days of age, which can produce strong immunity.

2) Sick pigs: penicillin 800,000 1.6 million IU, streptomycin sulfate, vitamin C injection 10 15ml, an intramuscular injection 2 times a day, for 3D (50kg weight pig dose).

3) Traditional Chinese medicine**: Fritillaria, almond, soft winter flower, gardenia, tangerine peel, coria seed, melon ten.

2. Prevention and control of common pig diseases 349 kernels 15g each, 20g of skullcap, 25g of honeysuckle, 10g of licorice, decoction, wait for temperature to take internally, 1 dose per day, several doses.

The incubation period of swine fever is 1 3 days. The incidence of piglets and maturing piglets is higher than the incidence. Diseased pigs carry bacteria from pig lung disease in various organs of the body, which are excreted through intestinal secretions and excretions.

The bacteria can be transmitted to healthy pigs through respiration and other means, causing infection. The incidence is higher when healthy pigs are weak.

Porcine lung disease is divided into three types: acute, acute and chronic. The most acute death is relatively rapid and can last for 1 to 2 days. The main manifestation is fibrinous pleuropneumonia.

The symptoms of sepsis are not very obvious. At first, the body temperature is high, dry cough, purulent eye feces, constipation, and later purple diarrhea appears. Acute swine lung disease can last up to 4-6 days.

Chronic porcine lung disease can last up to about 2 weeks. The main manifestations are loss of appetite, dyspnea, depression and hyperthermia.

Through epidemiology, clinical symptoms and pathological changes, we can also make a preliminary judgment on swine lung disease and make an accurate diagnosis through laboratory methods. However, it needs to be differentiated from acute throat disease and swine asthma. Fundamentally, the way to prevent pig lung disease is to pay attention to the environment of the pig farm, pay attention to ventilation, clean up pig manure in time, reduce the density of pigs, and thus improve the resistance of pigs.

At the same time, pigs should be vaccinated in a timely manner. Breeding boars must be vaccinated with inactivated vaccine twice a year, and breeding sows should be vaccinated before breeding. Typically, fattening pigs are injected approximately once a month.

Sick and dead pigs should be buried deep or burned with fire to prevent secondary infection with other pigs.

Breeders should often observe the situation of pigs, and if they find abnormalities, they should be isolated immediately, diagnose them in time, understand the situation of pigs, and detect and improve them as soon as possible to prevent large-scale infections and cause heavy losses. In addition, the combination of traditional Chinese and Western medicine has also achieved good results in pig lung disease. Sick pigs can be treated with a combination of traditional Chinese and Western medicine**, pig lung disease is a common infectious disease.

The slightest carelessness will cause huge losses to the farm, but it can also be prevented by the combination of traditional Chinese and Western medicine. In order to understand the mobility characteristics and clinical symptoms of porcine lung disease and elucidate the pathological changes of porcine lung disease, we can make a preliminary judgment on pigs through some simple medical knowledge, and then make an accurate judgment through laboratory methods.

The most common is the acute form, which presents primarily as acute pleuropneumonia. Elevated body temperature, persistent cough and dyspnea, initially dry cough that turns into a wet cough with pain on cough and rales and friction rubs on auscultation. Mucopurulent discharge from the nose, sometimes mixed with blood.

Constipation in the early stage, diarrhea in the later stage, mostly death due to suffocation, the course of the disease is 5 to 8 days, and the one without death becomes chronic.

Symptoms: the most acute type, eat normally at night, die early the next morning, often do not see the symptoms, the course of the disease is slightly longer, the body temperature rises to 41-42, appetite is lost, the whole body is weak, bedridden, dyspnea, dog sitting posture, foam from the mouth and nose, the course of the disease is 1-2 days, and the mortality rate is 100.

Acute type (pleuropneumonia type), body temperature 40-41, spastic dry cough, mucous or purulent sputum discharge, dyspnea, then wet, painful cough, chest pain, dog sitting, dog lying, constipation at first, diarrhea, and congestive hemorrhagic spots can be seen on **. Chronic type, persistent cough, dyspnea, nasal discharge with a small amount of mucus, sometimes joint swelling, emaciation, diarrhea, and death after more than 2 weeks, the case fatality rate is 60-70%.

The most acute type: commonly known as "lock throat wind", the body temperature is above 41, the throat is swollen, and the severe can affect the root of the ear and neck. Sick pigs have difficulty breathing at a high altitude and open their mouths to breathe.

Cyanosis of the visible mucous membranes, foam from the mouth and nose, often in a canine sitting position. Erythema appeared in the lower part of the body, once respiratory symptoms appeared, the condition deteriorated rapidly, and soon died, with a mortality rate of 100%, and some sick pigs showed symptoms of sepsis, and they did not see the symptoms, and died suddenly.

Acute type: predominantly presents with fibrinous pleuropneumonia symptoms. High body temperature, dry, short, crampy cough, dyspnea, purulent discharge from the nose.

Severe pain in the chest on palpation. **There are erythema or bleeding spots. Generally 4-6 days suffocation to death, immortality turns chronic.

Chronic: Presents with symptoms of chronic pneumonia or chronic gastroenteritis. Sick pigs have persistent cough, dyspnea, loss of appetite, often diarrhea, high and low body temperature, gradual emaciation, some joint swelling, ** crusty eczema, most of them die due to failure, and the case fatality rate is 60% 90%.

Some swine lung disease and swine fever are co-inhabited. It is difficult to diagnose the disease based on clinical symptoms alone, and it is necessary to take heart blood, various exudates and various solid organs to be sent to the veterinary laboratory for examination.

A: According to the length of the disease and clinical manifestations, it is divided into the most acute, acute and chronic types. The most acute type.

He did not have any symptoms, became suddenly ill, and died quickly. In the course of the disease, the elderly showed a body temperature of 41 42, loss of appetite, dyspnea, rapid heartbeat, cyanosis of the visible mucosa, and ** purplish erythema. The throat and neck are hot, red, swollen, and hard, and in severe cases, extend to the base of the ears and chest.

Sick pigs have extreme difficulty breathing, often sitting in a canine posture, stretching their heads and necks, sometimes making a wheezing sound, and white foam flows out of their mouths and noses, sometimes with blood. Once severe breathing difficulties occur, the condition often deteriorates rapidly and death occurs quickly. The mortality rate is often as high as 100%, and it is rare to see natural **.

Acute type:This type is the most common. The body temperature of the sick pig is 40 41, and the initial stage is a crampic dry cough, dyspnea, foaming at the mouth and nose, sometimes mixed with blood, and then becomes a wet cough.

As the disease progresses, breathing becomes more difficult, often in a canine sitting position, and palpation of the chest is painful. Lack of energy, loss of appetite or disuse, ** erythema, later weakness, bedridden, mostly due to suffocation. The course of the disease is 5-8 days, and the immortal becomes chronic.

Chronic type:The main manifestations are pneumonia and chronic gastroenteritis. Occasionally, there is a persistent cough and dyspnea, and a little moving or purulent nasal discharge.

Swollen joints, often diarrhea, loss of appetite, malnutrition, crusty eczema, growth arrest, extreme emaciation, the course of the disease is more than 2 weeks, and most of them die.