Prevention of Pig Unnamed Heat Syndrome

In recent years, the pig unknown fever syndrome characterized by high fever, rapid onset, and rapid death has occurred in some parts of China. Unlike many pig diseases (such as swine fever, pig erysipelas, etc.) that have caused high fever in pigs, the disease is characterized by: The rate and lethal rate are high, and fattening pigs, nursery pigs and breeding pigs are susceptible. The main manifestations of sick pigs are elevated body temperature, difficulty in breathing, some sows aborted, and some of the sick pigs have symptoms of conjunctivitis. The autopsy showed sepsis, respiratory pathological changes, ventricular atrial endometrial bleeding, pulmonary interstitial edema, and gastric mucosal bleeding ulcers. , ileitis, latent mucosal bleeding, cecum, colonic mucosal bleeding, bile deposition, renal swelling, congestion, cortical dense bleeding, scattered bladder bleeding and so on.

First, the cause of the disease

Our country has always planned immunization against severely endangered animal diseases. However, in many areas, this type of immunization is cut off at the county level because many rural primary level veterinary stations have been withdrawn or removed several years ago. The vaccine is also difficult to distribute to townships.

In some areas, long-term prevention and control of the lack of surgery caused the spread of the epidemic. Although governments at all levels in the provinces, cities, and counties have established major animal epidemic disease prevention and control headquarters, and all have formulated emergency plans for major animal epidemic outbreaks, these contingency plans are for highly pathogenic avian influenza or subtype I foot-and-mouth disease. Serious animal epidemics generally do not include swine fever syndrome.

Most people in primary veterinarians lack awareness of the hyperthermia syndrome and have great blindness to their medications. Once a drug treatment fails, it will immediately change to another drug, so that many pigs that can be cured can Death ended. In addition, the phenomenon of arbitrarily discarding or selling slaughtered dead pigs has continued for many times, resulting in an epidemic that has been difficult to control for a long time.

Second, prevention and control measures

The cause of the disease has so far been inconclusive, but it is certain that this contagious swine disease with high fever is a disease in which secondary infections are caused by multiple pathogens. High fever is the protective response of animals to diseases. In clinical practice, many pig farms use a large amount of metabolite to inject the pigs. This is wrong. Because Analgin destroys a white blood cell of immune cells, a large number of injections will inhibit the self-immunity of the diseased pig. At present, there are instances where it is proven that treatment alone cannot prevent the occurrence and spread of the disease. The use of antibiotics not only does not alleviate the condition, but also can significantly accelerate the death of pigs. The only prevention and control method is to improve the living conditions of pigs from the environment. , nutrition, health care and other comprehensive improvement of the pig's resistance. The facts show that the disease is serious in small and medium-sized farms, and the large-scale modern farms are much better.

Adhere to the principle of self-cultivation and self-cultivation to prevent the purchase of potentially infected pigs. Pay attention to the feeding and management of pigs and minimize various stress factors. From birth, conservation to culling, strict adoption of all-in and all-out feeding methods is adopted to avoid raising pig populations that differ greatly in age from one day to the next, and to minimize the number of times that the herd will be transferred and mixed, so that the herds of the same pig house can be simultaneously All of the pigs were transferred out, and at the same time, pigs were sterilized and sterilized after each batch of pigs were slaughtered, and then they were emptied for a few days and then transferred to new pigs.

The pig house and the environment need to be regularly disinfected to reduce the content of pathogenic microorganisms. Since the virus is not sensitive to common disinfectants, especially porcine circovirus, the general disinfectant does not work on it, and new-type, less irritating disinfectants should be selected, such as compound aldehyde disinfectant. At the same time, the concentration of the disinfectant should be increased within 10 days of the onset of the swine herd, and the external environment near the epidemic area and the epidemic area should be strictly disinfected 4 to 6 times a day. For sows and large and medium-sized pigs, it can be at noon. Spray disinfection, pig farm life management area disinfection once a day. From the 10th day onwards, the disinfectant can be diluted by one-time dilution to disinfect, in order to reduce the chance of healthy pigs passing the respiratory infections of influenza virus.

Pigs that have experienced no name and high fever should be kept in isolation, intensively cared for, and added with 300 grams of fluoxacillin + sulfamethoxazole per ton of feed. Since the feed intake of affected pigs is reduced and they cannot take enough therapeutic doses, they should be added to the drinking water at the same time so that the pigs can freely drink for 5 to 7 days. Simultaneously, intramuscular injection of compound triazepam injection and compound Bupleurum injection was performed at a dose of 0.1 ml per kilogram of body weight, once a day for 2 to 3 days, or at a dose of 0.2 ml per kilogram of body weight. Compound doxycycline injection and compound astragalus injection are injected intramuscularly once a day for 2 to 3 days. If infected pigs are infected with viral diseases such as swine fever, the therapeutic effect is poor. Diseased pigs with particularly severe conditions and poor therapeutic effect should be eliminated in a timely and decisive manner to prevent the spread of the disease. Two weeks after the weaned pigs were transferred to the nursery, they chose to repel insects that had significant effects on the parasites.

To prevent this disease, immunization against swine fever should be carried out, including over-exemption and emergency immunization of epidemic points; attention should be paid to the effect of blue ear disease on swine fever; attention must be paid to the warmth of pregnant pigs in the heating and heat preservation of winter pighouses. The lower body temperature of the pigs will reduce the birth weight of the piglets and increase the number of weak litters; strict implementation of the weaning means that the feed quality of the pigs is better, and two feeding troughs (one dry trough and one dilute trough) are provided; Strengthen immunity against Pasteurellosis; prevent mycotoxin harm.

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