However, in terms of treatment measures, many farmers only know about sheep acariasis, and they can't tell the pathology and etiology of the "culprit". They only know that it is sheep skin parasitic disease, and they don't know what mange is at all. In sheep acariasis, there are mainly two kinds of parasites, one is called perforated mange, and the other is called suction mange. Although they are all scabies, their harmful characteristics and nature are still different. Only by finding out the cause, prescribing the right medicine and taking comprehensive treatment measures can we achieve good therapeutic effects. The treatment measures in the opposite direction not only delay the treatment opportunity, but also sometimes cause irreparable economic losses.
Healthy sheep
First, those things about sheep mites and parasites. Generally speaking, sheep scabies mites are divided into itch mites and scabies mites, also known as scabies, scabies or scabies. 1, scrapie mite disease of sheep is parasitic on the skin surface of sheep by sucking scabies. This insect parasitizes the sheep's skin, spawns and breeds, pierces the sheep's skin with its needles, absorbs nutrients, and the saliva secreted in the mouth contains toxins, which makes the sheep have a strong itching feeling. Harm the skin tissue of sheep, causing mental anxiety, itching, depilation, loss of appetite, emaciation and even death.
2. The sheep scabies mite is a kind of perforated scabies, which is parasitic in the epidermis of sheep. It also uses needles to absorb nutrients from sheep's skin to parasitize, and harms sheep's skin from sheep's epidermis. Sheep scabies, in the process of piercing scabies and eating sheep tissues, will also cause some itching to sheep because of toxic saliva. Different sheep breeds have different treatment methods and different harmful parts.
Sheep mange, according to the damage of sheep skin, is an itchy mite if it occurs from the surface of sheep skin; If acariasis occurs from the inside of sheepskin, it is scabies. The difference is that one is parasitic on the epidermis of sheep and hurts the skin tissue of sheep; The other is parasitic from sheep epidermis, which also harms sheep skin tissue.
sarcoptic mite
Second, the causes of sheep acariasis: 1, the change of breeding methods:
In the previous family-based free-range mode, the sheep were not large. Then, the sheep of the flock are easy to raise and manage. If a person manages more than ten sheep, it can still be well nurtured, and it is easy to establish feelings between people and animals. Once there is any abnormality in the sheep, the owner of the sheep will find the problem at the first time and strengthen the feeding management to make the sheep less susceptible to infectious diseases. Then in rural areas, the scale of raising sheep gradually increased, and the captive mode was widely used. In the centralized sheep raising mode, once a sheep is poorly maintained, if it is not found in time, it will cause the outbreak of itchy mites in the whole flock.
Intensive farming, like "big pot rice", is not as fine as "small pot rice". Especially in the extensive feeding management in rural areas, the feeding pens are simple, and in order to keep warm in winter, large and small sheep gather in pens, which provides a hotbed for the development and spread of sheep dermatoparasitic diseases.
2. Bad feeding environment is the main cause of the disease:
It can be said that as long as it is about skin parasitic diseases of sheep, it has a great relationship with the hygiene of the feeding environment. According to the incidence law of sheep acariasis, the high incidence period is from late autumn to early winter to early spring. During this period, the sheep lost the conditions for grazing in the wild and adopted captivity. If the feeding density of the sheepfold is reasonable, the ventilation and lighting are good, and the sanitation and disinfection are in place, sheep are usually not prone to sheep mites. On the contrary, in the extensive sheep management, the sheepfold has high feeding density, poor sanitary conditions, dark and humid conditions and poor lighting conditions, and there are no effective measures to warm up and keep warm. Then, even if sheep don't suffer from sheep acariasis, they are prone to other skin diseases and respiratory diseases.
Bad feeding environment is easy to breed all kinds of parasites and germs, and it is very easy to bring various diseases to sheep. Therefore, we farmers must create a good growth environment for sheep, which can effectively reduce the harm of various diseases to sheep. Only by strengthening feeding management and reducing the problem of sheep acariasis can the breeding benefit be improved.
Clean and hygienic sheepfold
3. What are the different symptoms of sheep acariasis? 1, goat scabies. It mainly occurs around the lips, eyes, the back of the nose and the roots of sheep's ears, and can also spread to some parts of armpits, abdomen and limbs. In severe cases, the lips of the sick sheep are cracked, and the sick sheep will have eating disorders.
2. Goat itch mite. It mainly occurs on the inner surface of the ear shell, causing yellow scab on goat ears. If left unchecked, it will block the ear canal, make the sheep deaf, listless, lose appetite and even lead to the death of the sheep.
3. Sheep sarcoidosis. The main symptoms are the head, around the lips, both sides of the corners of the mouth, the edge of the nose and under the ears. Sick sheep, because their skin tissue is bitten by parasites, will form a white hard rubber scab at the diseased part, commonly known as "lime head" disease.
4. Sheep itching and acariasis. The main symptoms are manifested in the back, buttocks, sides and tail roots of sheep with thick hair. In sick sheep, back hair often hangs in bundles on both sides of the sheep. As the hairy roots are destroyed by mites, they will fall off in a large area. If it is serious, all the back hair will fall out.
Different sheep breeds have different parasitic mites, so the symptoms of the infringed sheep are different. According to this method, it can be roughly judged what kind of sheep acariasis has occurred in farmed sheep.