Diagnosis and comprehensive prevention of swine big neck disease

How to treat big neck disease? Porcine big neck disease usually refers to a type of disease in which the neck of the pig is seriously edematous and the respiratory sensation is the main symptom before death. The following is mainly to study the on-site diagnosis and prevention experience in the northeast and Hebei regions.

First, the incidence

The affected pigs were weaned piglets that had just placed the bed, with an average weight of about 15 kg. Two days after the birth of the bed, it began to appear in succession, and the treatment with sulfa drugs and cyan and streptomycin was not effective. At the time of the visit, one pig died; the rest of the pigs had difficulty breathing, gasping for breath, nasal red foamy liquid, depression, unstable walking, refusal to eat, pale skin, individual pig ears dark red, neck ventral Severe edema, bloody class. Clinical examination, the body temperature of sick pigs increased by 40-42 ° C, acute swelling of the throat, high difficulty breathing, individual pigs mouth, eyes, mucous membranes were purple-red, ventral, ear root and inner limbs of the skin visible erythema, refers to The pressure faded and the ankle joints of the hind legs were swollen.

Second, necropsy lesions

Cut the connective tissue of the throat and see the gelatinous substance and the yellowish liquid leaching; there is a reddish foam liquid in the nostrils and oral cavity, there is a bleeding point in the subcutaneous tissue, the whole body lymph nodes are swollen and hemorrhagic, the interstitial edema is formed, and the surface is covered with a layer of serous fiber. Protein exudate; there are jelly-like edema on the outside of the pericardial coronary ganglion, mucosal hemorrhage in the digestive tract, red spots on the abdomen, thoracic and cervical, auricles of the ear and the inner part of the extremities; inflammatory exudate in the thoracic cavity and pericardium build up.

Third, diagnosis

1. Take the liver, spleen, lung, pleural fluid or peritoneal fluid and other disease materials to make smear tablets. After staining with alkaline melamine solution, a large number of small bacilli infected with bipolar can be seen. At the same time, combined with clinical symptoms and cross-section A lesion and a laboratory test can be diagnosed as a Pasteurella multocida infection.

2, classification of symptoms: should be differentiated from acute throat anthrax, porcine infectious pleuropneumonia, asthma.

1 acute throat type anthrax: throat type anthrax mainly affects the submandibular, retropharyngeal and anterior cervical lymph nodes, while the lungs have no obvious inflammatory lesions. The throat swelling of the most acute swine plague is a hemorrhagic serous inflammation of the surrounding tissues and subcutaneous tissues of the throat, and the lungs have acute pulmonary edema and other lesions. The smear was stained with alkaline melamine solution and microscopically examined. The anthrax was found to have a large bacillus with a red capsule, and the porcine lung plague showed a small oval bacillus densely stained at both ends.

2 porcine contagious pleuropneumonia: the pathology of infectious pleuropneumonia is limited to the respiratory system, the pneumonia liver metastasis area is purple on one side, and the pneumonia area of ​​swine plague often has red liver and gray liver mixed; smear Staining microscopy revealed different pathogens.

3 Swine asthma: The main symptoms of asthma are asthma, cough, low body temperature, and mild systemic symptoms. The pneumonia lesions were pancreatic or meaty, with obvious boundaries. The lesions on both sides of the lung were symmetric and there was no tendency for suppuration or necrosis.

Fourth, comprehensive prevention

1. The sick pigs are kept in isolation, and the dead pigs are deeply buried. The 1:400 times of iodine solution and 1:300 disease quenching dilution are alternately disinfected.

2, sick and dead pigs and their excrement in a timely manner incineration, deep burial and harmless treatment.

3, the whole farm healthy pig emergency vaccination of the Danfei lung vaccine 2 head / head, strengthen disinfection and feeding management.

4, treatment measures in the morning: ceftimef 5mg / kg body weight, ring 瘟 瘟 康 Kang 0.2ml / kg body weight mixed muscle injection; afternoon: fluorocyl gold prescription 0.05ml / kg body weight, anonymous high fever Kang 0.2ml / kg body weight muscle injection. The whole group of drugs: Gaolin 400ppm, flunicon 400ppm, 50% compound Astragalus polysaccharide 500ppm mixed mix, used for 7 to 10 days.

V. Diagnosis and treatment experience

The disease is easy to occur when the piglets are weaned, refueled, and transferred. Pasteurella is often found in the respiratory tract. When the respiratory tract is damaged, the bacteria multiply by chance, resulting in the onset of piglets under stress.

For the wonderful pictures and popular comments on the prevention and treatment of big neck disease, you may be interested in the following recommended contents. Welcome to read.

Automatic Nucleic Acid Extractor

Nucleic acid extraction instrument is an instrument that automatically completes the nucleic acid extraction of samples by applying the supporting nucleic acid extraction reagents. Widely used in disease control centers, clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, animal husbandry and molecular biology research and other fields.
Using magnetic beads as the carrier, using the principle that magnetic beads adsorb nucleic acid under high salt and low pH value, and separate from nucleic acid under low salt and high pH value, and then move the magnetic beads or transfer the liquid to realize the entire extraction and purification process of nucleic acid. Due to the uniqueness of its principle, it can be designed into a variety of throughputs, which can be extracted from a single tube or 8-96 samples, and its operation is simple and fast. It only takes 30-45 minutes to extract 96 samples, which greatly improves the The experimental efficiency is low and the cost is low, so it can be used in different laboratories, and it is the mainstream instrument on the market.

Features of Magnetic Bead Nucleic Acid Extractor
1. Enables automated, high-throughput operations.
2. Simple and fast operation.
3. Safety and environmental protection.
4. High purity and high yield.
5. No pollution and stable results.
6. Low cost and easy to be widely used.
7. Different types of samples can be processed simultaneously.

Nucleic Acid Extraction System,Automatic Nucleic Acid Extractor,Nucleic Acid Extraction Machine,Nucleic Acid Extraction Instrument

Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com