Control Methods of Swine Scabies Acariasis

Spring back to the earth, the recovery of all things, parasites are no exception, especially pig scabies, very difficult to eradicate.

Scabies scabies is a common and frequently-occurring disease in pigs. The infection rate of pigs in large-scale pig farms is high, and there is an increasing trend year by year. Scabies mites parasitize in the tunnel dug by the insect body in the deep layer of the skin epidermis of pigs, causing red spots, pustules, scabs, cracks and other lesions on the affected skin. Due to the intense itching of the parasitic part of the mites, the affected pigs rub the corners and railings from time to time, causing skin blood flow, affecting appetite, slow growth, reduced disease resistance, and discounted feed remuneration. Due to the rampant epidemic of infectious diseases in pigs in recent years, people have put the focus of epidemic prevention on blue ear disease, classical swine fever and other diseases, and scabies disease usually does not cause death, bringing only recessive economic losses to pig farms, so this disease is often ignored by pig farmers. Nowadays, the infectious diseases in many pig farms are relatively stable. In order to further improve the economic benefits of pig farms, enhance the physical fitness of pigs and their own disease resistance, large-scale pig farms should pay attention to the prevention and control of pig scabies.

Sarcoptic mite is an ectoparasite, which is different from other infectious diseases. At present, the research on this disease is relatively thorough, and the diagnosis of this disease is not difficult. Its symptoms can be said to be clear at a glance. The drugs used to prevent and treat this disease have ideal effects. At the same time, our practice has also confirmed that as long as the drugs are used rationally and the environmental sanitation of pig farms is improved, pig mite disease can be eliminated for several years.

The cause of 1. disease 1. Pigs like scabies are dark and humid. For example, in rainy seasons, in an environment with dense pigs and poor sanitary conditions, it is conducive to the reproduction, spread and spread of scabies, and the disease of infected pigs is more serious. In summer, some pig houses use wet curtains. If ventilation is poor and humid, it also creates conditions for the reproduction of scabies. 2. No matter the size of the pig, it can be infected with scabies mite, but the piglets are more susceptible, the symptoms are more obvious, and the harm is also greater. With the increase of age, the symptoms gradually reduce and become mites. The disease is often transmitted to piglets from sows with insects. Therefore, attention has been paid to the prevention and control of sows. Little imagine, boars with insects are also very common, and some pig farms neglect the prevention and, unconsciously to the disease in the pig farm in the long-term epidemic buried the bane.

The clinical diagnosis of 2. scabies is not difficult. Experienced veterinarians can see it at a glance. The main symptoms are: 1. In the early stage, it is common to see the peeling of dander on the auricle, red spots and blisters, and scabs merge with each other in the later stage. In addition, the eye socket, cheek, neck, shoulder, both sides of the trunk and limbs are susceptible areas. Due to the itching of the affected part, the sick pigs often rub in corners, as a result, the skin is broken and bleeding, and the mucus and dander oozing from the affected part condense into scab skin, which is itchy and then scabbed. Over time, the skin is rough, thickened, elastic or wrinkled and cracked. The long-term illness of piglets, but also can cause loss of appetite, slow growth, poor development, physical weakening, easy to secondary or induce other diseases.

3. prevention and control measures 1. Keep the pigsty clean, dry, transparent and well ventilated. The feeding density of pigs is reasonable, and the piggery is often cleaned and disinfected. The regular inspection of pigs, found that scabies mite disease pigs timely isolation, treatment, recovery rear can be herd. 3. When introducing breeding pigs, they shall be kept in isolation according to the regular. During this period, the inspection of scabies mites and the deworming with drugs shall be carried out to confirm that the breeding pigs are healthy and safe to be gregable. 4. Drug prevention and treatment of sarcoptic mite disease. The preferred injection drugs for preventing and controlling scabies are avermectin, ivermectin or doramectin, etc. Oral administration is made of avermectin, ivermectin (anthelmintic drug produced by Wuhan Huisheng Biology-"Le QuCong" is effective, safe and effective) premix, etc. Organophosphorus compounds, insecticide-mimetic esters, amitraz or avermectin transdermal agents, refined trichlorfon, etc. are, etc.

Experience of 4. drugs for the prevention and treatment of sarcoptic mite disease

1. Before treatment, sick pigs and pigs in the same herd should be checked head by head to master the disease condition and disease site of each pig so as to determine the symptomatic treatment plan.

The scabies disease has a high degree of contagion, so found a case of sick pigs, it is best to give control to all pigs in the whole herd.

3. In pig farms with severe scabies mite disease, a combination of injection and external use of drugs or oral administration and external use of drugs can be used.

4. When applying insecticides for external use, for individual cases with serious illness, the affected part and surrounding coat should be cut off, scab and dirt should be completely removed with warm soapy water, and soapy water should be washed away before application. To control the speed of drug absorption. In the low temperature season, it is advisable to increase the temperature, and use warm water to mix and apply, and appropriately increase the concentration of the drug ratio. In summer, it is advisable to apply the medicine when the temperature is not too high in the morning. If the medicine is used at a high temperature, the pores open and the absorption of the medicine is accelerated, which is easy to increase the occurrence of allergic cases. In severe cases, acute poisoning may occur. In high temperature days, the drug concentration can be appropriately reduced.

5. in the pregnant sows mite drive to carefully choose the drug and choose the appropriate way of medication, improper use or improper medication may cause part of the sow abortion.

6. regular acaricidal drugs usually can only kill insect bodies but not eggs. According to the development law of mite eggs, after the first medication, the medication is repeated at intervals of 7-10 days, and the third medication can be carried out if necessary.

The seasonal mite disease generally occurs in the winter and spring season, should focus on these two seasons to drive mites work. The key is to grasp two times:(1) at the end of autumn and the beginning of winter, the temperature is conducive to the role of external drugs, and two courses of treatment can be arranged in succession to minimize the infection level, which is conducive to the control of the disease in winter;(2) At the end of winter and the beginning of spring, the temperature begins to rise, and mite reproduction enters an active period. Two courses of treatment are arranged to drive the whole group mite to hold down this momentum. If these two time control is unfavorable, the mite situation in winter and spring is not optimistic, even if it is to be controlled, it will cost more manpower and material resources.

Traditionally, high temperatures in summer and autumn are not conducive to the growth of mites and the pressure of infection is small. With the improvement of large-scale pig farm equipment in recent years, especially the use of wet curtain, negative pressure ventilation system or the construction of closed constant temperature pig house, even in the hottest summer, the room temperature in the house can be controlled at 25 ℃-30 ℃, and the high humidity is still conducive to the growth of mites, so the mites can not be relaxed in summer.

According to the production process of large-scale pig farms, pigs should arrange in vivo and in vitro parasites (including mites) deworming procedures when they are transferred between different links, so as to control the spread of parasites between different links.

male and female pigs: the whole group of deworming 1 times per quarter, 4 times a year.

Reserve sow: within 1 month after introduction, deworming 1 time

Piglets: deworming 1 time in conservation period and deworming 1 time in growth period

As we all know, severe infectious diseases destroy pig farms, parasites eat profits, and the hidden losses caused by scabies disease in pig farms cannot be underestimated. It is one of the favorable means to save production costs.