Farmers have noticed that their own sheep will gradually lose weight into a bone shelf. It may be that the sheep are infected with parasites and cause liver schistosomiasis. This disease is caused by the parasitic flukes of the liver in the liver bile duct. Or acute hepatitis and cholangitis. In June-September, it is a period of high incidence of larvae, including long-term rivers, mountains, creeks, and low-lying, humid marshes. When sheep eat grass, material or water attached to the larvae of the larvae. Parasites, sheep of all breeds, genders and ages can be infected. The incidence and mortality of lambs and sheep are higher than those of other age groups. If the sick sheep can't get effective treatment, it will eventually die due to nutritional failure. In the face of sheep liver schistosomiasis, the sheep farmers should not be taken lightly, otherwise they may suffer big losses!
First, differential diagnosis of hepatic schistosomiasis
At the beginning of the disease, there are often symptoms such as depression, loss of appetite, pale mucous membranes, jaundice and anemia. Then the sick sheep will gradually lose weight into a skeleton, the coat becomes rough, fragile, ribs protruding, and there will be edema in the eyelids, jaw, chest and abdomen. Individual diseased sheep may also have ecstasy (such as eating soil, wall, etc.) and often appear constipation and diarrhea alternately, the stool is mostly dark brown and partially bloody. Sheep with severe illness usually die after 1 to 2 months due to worsening of the disease or nutritional failure. The sheep with mild disease can continue to recover after the spring weather is warmed up and the feed is improved. Inspection method: The sick sheep feces can be detected by the nylon sieve panning method or repeated precipitation method, and the eggs of the liver fluke are golden yellow long oval. The diseased sheep can also be dissected to show atrophy of the liver, obstruction of the bile duct, and clear visible worms and lesions. Diagnosis can be made based on the comprehensive judgment of epidemiology, clinical symptoms, stool examination and anatomical examination of Fasciola hepatica.
Second, liver fluke disease prevention and control measures
1, drug deworming
Sheep liver schistosomiasis should be based on drug deworming, whether it is prevention or treatment. Because the disease is very seasonal, the time and frequency of deworming are very important. Acute cases can be dewormed in the larval stage in September and chronic cases can be dewormed in the adult stage in October. In order to prevent infection of the flock, you can choose to deworm twice in the period from February to March and from October to November. The deworming in February and March is to reduce the spread of the disease during summer and autumn grazing, while the deworming in October and November protects the flock. Winter prevention prevents winter onset. Chlorophenol is the most ideal deworming drug for Fasciola hepatica. The amount of deworming is 3~5mg per kilogram of body weight. It is taken once a day for 3 days on an empty stomach. In addition, you can also choose to use drugs such as sputum, sputum, albendazole, sulphur dichlorophenol.
2, grazing management
When grazing, you should choose a grassy farm with high ground and avoid grazing in areas such as low-humidity and swamp rivers. Before grazing, you should drink enough water to avoid drinking water from rivers, puddles, etc., which are easily contaminated by liver flukes during grazing. At the same time, especially in the dry grass season, grazing sheep should also be combined with supplemental feeding. Daily supplementation of some concentrates to improve sheep sensation and resistance can also achieve good results in preventing liver flukes.
3. Environmental sanitation
The manure in the sheep house should be cleaned up and piled up at the designated place for fermentation. The eggs can be killed by the heat produced during the fermentation of the manure. The manure discharged during the deworming should be treated strictly to prevent the sheep from recurring due to fecal contamination of the sheep house environment, forage feed or drinking water.
Sheep liver schistosomiasis is one of the most widespread and most serious parasites in China. Therefore, farmers should regularly deworm the flocks and do a good job in preventing and treating sheep liver schistosomiasis to avoid losses.
Specifications:
Display size: 7 inch TFT
Scanning manner: Electronic convex array, electronic linear array
Working frequency: 2.0MHz~10MHz
Display mode: B, B+B, B+M, M, 4B
Scanning range: Convex array 60°~150°
Amplification factor:1.0, 1.2, 1.5,2.0
Gain control: 8 segments TGC and overall gain can be adjusted respectively
Image processing: 8 γ corrections, frame correlation, point correlation, line correlation, digital filtering, digital edge enhancement and pseudo color processing, etc
Image gray-scale: 256 levels
Scanning line number: 512 lines/frame
Frame rate: 30 frames/second
Digital scanning conversion: 512×512×8 bits
Memory capacity: ≥2GB
Conventional measurements: distance, perimeter, area, volume
Obstetric measurement: horses, cattle, sheep, dogs, cats obstetric measurement
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Battery capacity: 3000mAH/7.4V,can work more than 2 hours
Display screen: 7" TFT
Output interface: USB port, video.
Overall size: 216mm×147mm×27mm
Total weight: 950g(with battery)
Waterproof: IP65(optional)
Standard Configuration:
Host, convex probe, built-in battery, power adapter, bag.
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