News briefing:
News briefing:
With the continuous development of the sheep breeding industry, the incidence of sheep parasitic diseases has shown an increasing trend year by year. We need to pay more attention to common parasitic diseases and construct comprehensive prevention and control measures. This article introduces what are the sheep parasitic diseases? Diagnosis of common parasitic diseases in sheep!
What are the sheep parasitic diseases?
One, sheep liver Fasciosis
Also known as sheep liver hydrocarbons, it is a common parasitic disease that seriously harms the sheep breeding industry. It is caused by Fasciola hepatica parasitism in the liver and service tubes of goats. Disorders of digestive function and metabolism.
Fasciola hepatica is more common in warm, humid and watery areas, and it harms goats seriously in the south.
2. Sheep anterior and posterior disk trematodiasis
anterior and posterior disc trematosis, also known as bioral fasciosis and homodiscuss, is a disease caused by a variety of anterior and posterior trematodes of the same order and the anterior and posterior families.
Adults parasitize on the sheep’s stomach, reticulum and the wall of the service tube, and the harm is generally not serious. However, if a lot of worms are parasitic on the real stomach, small intestine, tube and gallbladder, they can cause serious diseases and even mass deaths.
3. Dictyosis of sheep
, also known as sheep lung nematode disease, is a parasitic disease mainly caused by respiratory system symptoms caused by the filamentous Dictyostelium of the Dictyostelidae family Dictyostelium parasitic in the trachea and bronchus of sheep.
This disease is more common in humid areas, and it is often endemic. The infection season is mainly spring and autumn. Mainly harms lambs.
Four, wound maggot disease
Wound group disease is a disease caused by the larvae (maggots) of various snails parasitizing in the wounds of sheep. The most harmful fly is the gorgeous worm.
The characteristic of this disease is that a large number of maggots accumulate in the wrinkles of the wound, skin, and mushroom membrane, causing anxiety in the sheep. Mainly seen in grazing sheep, rams suffer serious damage.
Five, tapeworm disease
The common one is Monizia tapeworm. The worm is 1 to 5 meters long, white and slender. Mainly parasites in the small intestine. In severe cases, the worms block the intestine. Goats infected with tapeworm disease quickly lose weight, have rough coats, lose appetite and increase appetite, and develop diarrhea, anemia, and edema, and a few have neurological symptoms.
6. Sheep nose myiasis
Sick sheep are characterized by inflammation of the upper respiratory tract, a large amount of nasal discharge, pus, sneezing, coughing, and weight loss. Those who invade the trachea and lungs have difficulty breathing, and those who invade the sinuses and involve the meninges can cause neurological symptoms. The disease can repeat periodically until death.
Seven, sheep brain hydatid disease
is also known as "crazy sheep" and "circumnavigation disease". Cranial nerve symptoms dominated by circumnavigation are obvious and easier to diagnose.
The diagnosis of common parasitic diseases in sheep:
In the process of diagnosis of sheep parasitic diseases, combined with the specific clinical manifestations of the diseased sheep, a preliminary diagnosis can be made. However, in order to make a diagnosis, an effective diagnosis must be combined with different parasites.
1. Diagnosis of surface parasites
Common surface parasites of sheep mainly include ticks, mites, lice, etc. These pests are common parasites on the surface of sheep. It can cause itching, redness and swelling of the skin on the body, and even spread certain viral diseases. During the diagnosis process, fresh dander tissues from diseased and healthy parts can be collected, brought back to the laboratory, placed on a black glass plate, heated with an alcohol lamp, and parasites can be seen from the dander after a period of time Climbing out, according to the form of the parasite, it can be judged to be a mite or a lice. In addition, the dander tissue can be placed in 75% alcohol, and after mixing, the sediment is dropped on the slide to further identify the type of parasite.
2. Diagnosis of endoparasites
There are many types of parasites in the body, and different diagnostic methods should be adopted according to the different types of parasites. Endoparasites mainly include flukes, tapeworms, nematodes, lungworms and blood protozoa. Among them, the eggs produced by flukes and tapeworms have a larger proportion than water. In the specific differential diagnosis process, fresh feces from the diseased sheep can be collected, mixed with clean water, and filtered repeatedly with gauze until the upper layer of liquid has changed. After clearing, and then after removing the upper layer of liquid, take an appropriate amount of precipitate and place it under an optical microscope, and compare the parasite map for observation and identification. The specific gravity of nematode eggs is smaller than that of water, and the saturated saline floatation method is mainly used in the diagnosis process. Dissolve 1~3g of fresh feces in a small amount of saturated saline, mash it, add ten times the saturated saline, filter with filter paper, and let it stand properly. Use an inoculation loop to occupy the surface and shake off the liquid, place it on the slide, and place it on a low-equipped microscope. Next observation. For lung filarial diagnosis, you can use a clean gauze to wrap 15g of feces, place it on the funnel, add 40 degrees of warm water to the funnel, filter the mixture into the test tube, and then absorb the liquid drops at the bottom of the test tube after half an hour to an hour. , Added to the slide, placed under the microscope to observe and check the type of eggs. Blood protozoa is mainly collected from the ear tip vein of the affected sheep. After the blood is made into a smear, it is first fixed with methanol, and then the blood is stained and placed under a microscope to observe the changes in the cells. Whether there is scorch or scorch Whipworm.
What are the sheep parasitic diseases? Diagnosis of common parasitic diseases in sheep! That’s it for everyone. Sheep farmers should attach great importance to this parasitic disease. According to the types of local parasites, in view of the developmental history and various key links in epidemiology, take measures to local conditions, prevent early, and eliminate them regularly. Insects, comprehensive control can be used to achieve the control effect.
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