Analysis on Epidemic and Control of Swine Disease

The current epidemic of swine disease presents some new features. In the clinical aspect, mixed infection, atypical and bacterial diseases of swine disease increased. Some views on some new features and control methods of swine disease are presented.

New characteristics of current swine diseases in 1.

1.Old blight keeps appearing

Such as porcine contagious pleuropneumonia and pig wheezing disease. Although these diseases are distributed in a punctate pattern and the incidence is limited to a pig farm or a pig house, they are still the main infectious diseases that endanger the pig industry.

2.New diseases continue to increase

In recent years, due to the introduction of new varieties, increased market liquidity, poor epidemic prevention conditions in village and town trading markets and small pig farms, porcine reproductive and respiratory syndrome, porcine circovirusNew diseases such as porcine pseudorabies and porcine proliferative enteritis have been introduced and occur in some farms with poor epidemic prevention conditions.

3.Atypification of some epidemics

Due to the existence of immune pressure, abuse of antibacterial drugs, bacteria, strains of variation and atypical clinical symptoms, to the diagnosis of difficulties, resulting in the diagnosis is not timely, bring huge economic losses.

4.multi-pathogen mixed infection

Multi-pathogen mixed infection has become the mainstream of epidemic disease, most of the pig farms at present, the existence of varying degrees of porcine reproductive and respiratory syndrome, porcine infectious pleuropneumonia, porcine circovirustype, pig breathing disease, pig pseudo-rabies and other pathogens of mixed infection.

5.Old diseases have a new tendency

Such as swine wheezing disease and swine atrophic rhinitis. In the past, the incidence rate was extremely low, if any. In recent years, with the occurrence of porcine respiratory syndrome, swine panting disease in respiratory syndrome in a mixed infection state. Swine atrophic rhinitis occurred in some pig farms in recent years, a serious threat to the safety of breeding pigs, serious illness of breeding pigs will appear turbinate atrophy, breathing difficulties, loss of seed value.

6.Bacterial disease is seriously harmful

In recent years, there are many bacterial diseases, such as swine mycoplasma, swine chlamydia, swine E. coli, swine Haemophilus, Borrelia septicum and Streptococcus suis.

7.Drug-resistant strains continue to emerge

Due to the increase in the abuse of antibacterial drugs and feed additives, drug-resistant strains continue to appear, such as Escherichia coli, which is not ideal in the prevention and treatment, causing people to have the misconception that they cannot be prevented.

8.Immunosuppressive diseases should be highly valued

Clinically, once infected with the pathogen, it can cause bacteria, viruses, a variety of pathogenic microorganisms mixed infection.

2. communicable diseases worthy of attention

1.Streptococcus suis

In recent years, the incidence of the disease is on the rise, especially for piglets. The disease is mainly joint swelling, skin papules-like objects. With the extension of the epidemic time, the prevalence of septic type, meningitis type accounted for the dominant position, should be given high attention. At the same time, Streptococcus suis is a zoonosis, which directly endangers human health.

2.porcine proliferative enteritis

Caused by Endocellular Bacillus seni, post-weaningWeeks ~20Week-old piglets are susceptible. Symptoms: feces become soft, thin, dark red, piglet mortality is high.The long course of disease shows pale skin, emaciation, growth retardation, and becomes a stiff pig.In severe cases, he developed bloody diarrhea, which eventually led to death. The necropsy changes were mainly proliferative enteritis, the end of small intestine and colon enlargement, intestinal tube enlargement, intestinal mucosal thickening. The serosa has a mesh, mesenteric edema, mesenteric lymph nodes, juicy sections, and blood clots in the intestinal cavity in individual cases.

3.porcine circovirus

Porcine circovirus has been confirmedThe type of porcine reproductive and respiratory syndrome, parvovirus disease mixed infection, serious harm, resulting in multiple system failure syndrome and porcine proliferative necrotic enteritis.

4.porcine paramyxovirus disease

Porcine paramyxovirus disease has been popular in foreign countries. These include blue-eye disease, Sendai disease, Niba disease and Maneghel disease. Porcine paramyxovirus disease is mainly caused by reproductive disorders in sows.

5.porcine lung cytomegalovirus

Also known as inclusion body pneumonia, the pathogen is the herpes virus. Can cause embryonic and piglet death, stunting, pneumonia. Can be transmitted vertically through the placenta, young pigs have mild pneumonia.

3. prevention and control countermeasures

In order to promote the development of pig industry and prevent the occurrence of zoonotic diseases, it is necessary to implement and implementPrevention firstThe principle of adopting comprehensive epidemic prevention measures and scientific breeding management methods.

1.Ensuring Provenance Health

Provenance health is the first hurdle to prevent epidemics and run pig farms, and it is also a favorable guarantee for running pig farms.

2.Prevention first, prevention is more important than cure

In some small farms and some small farmers, they think that immunization can not be effective, and drug treatment can solve the problem. They are lucky. When there is no disease, they do not pay attention to epidemic prevention and immunization, and often there is a blank of immunization against key diseases. Once the disease occurs, the economic loss is huge. Strengthening animal vaccine immunization is not the best way to control and eliminate the epidemic disease, but it is the main means to control the epidemic disease at present.

3.Strengthening epidemic disease surveillance and health surveillance

Doing a good job in disease surveillance and health monitoring is a guarantee for the rapid development of pig farms. By monitoring the immunization procedures of pig farms, we can prevent immune confusion and immune paralysis caused, monitor new epidemics, and take timely measures to prevent the spread of new epidemics.

4.improve the level of diagnosis

Due to the atypical and mixed infection of the epidemic, diagnosis by the naked eye has become history, and scientific detection methods must be relied on. Livestock and poultry should be diagnosed immediately after the disease to prevent the spread and spread of the disease.

5.Strengthen the supervision, management and technical guidance of small farms (households)

There are great hidden dangers in small farms (households), most of which are unscientific in management, complex in introduction, unreasonable in immunization procedures or blank in immunization, and imperfect in epidemic prevention measures and systems, which can easily lead to the expansion and spread of the epidemic.