Treatment of clonorchiasis in bovine liver

(agricultural Wealth net) Bovine liver fascioliasis (also known as Bovine liver Leech or Willow Leaf worm) is a chronic parasite invasive disease, which is the most widely distributed and harmful bovine parasitic disease in our province. According to our observation records for many years at the state-run Xinqiao Farm in Guangxi and several slaughterhouses in the second district of the four counties (cities) of Maoming City, the infection rate was 65%-95% for buffalo and 55%-65% for yellow cattle, and in areas prone to flooding or low terrain, the infection rate was higher.

Bovine liver leech, insect-shaped flake like melon seeds, also as big as broad bean, like the color of liver, its parasitic in bovine liver and bile duct can survive for 3 to 5 years, often cause chronic indigestion, anemia, weight loss and a series of deterioration of nutritional status of host cattle, such as dry skin, rough hair, easy shedding, yellowing of eyes, subcutaneous edema of neck, chest or abdomen, weakness and so on. Thus affecting the serviceability and reproductive performance of cattle, especially in the cold winter season, such as insufficient feeding, poor management, climate change, it is easy to make cattle thin and cause death.

According to our experience for many years, driving bovine liver leeches every year before the arrival of the cold winter season is a good measure to promote fat, protect the fetus and improve the physique of farming cattle. Because there are few Rain Water in autumn and winter, the worm eggs are difficult to hatch, which greatly reduces the chance of repeated infection in cattle, at the same time, cattle labor is lighter, grass, green fodder and sugarcane leaves are still luxuriant, which is beneficial to promote fat gain and improve curative effect.

I. Drug treatment

There are many insect repellents for bovine liver leeches. Several commonly used insect repellents and their usage are introduced as follows:

one? Inferior ⒈ sauce grasshopper? (also known as albendazole, anti-peristaltic, Changchongqing): this product is a broad-spectrum insect repellent, which has the advantages of high efficiency, low toxicity, safety and easy to use to Boletus leech. its pharmacological effect is selectively and irreversibly inhibiting glucose uptake, depletion of endogenous glycogen, inhibition of fumarate reductase, hindering adenosine triphosphate production, resulting in energy depletion and death of the insect. After feeding, the drug was absorbed very little in the intestine, 95% was not absorbed by oral administration, directly interacted with adults and eggs in the intestine, and excreted with feces within 24 hours; 5% of the absorbed was rapidly metabolized into sulfone and sulfoxide in the liver. The latter can kill larvae in the tissue, adults and eggs in the intestine, and excreted through the kidney within 48 hours, without accumulation in the body. The oral dose of 20 mg / kg live weight (if the third gastric injection is used, the dosage can be halved), the bovine liver leech can be about 95%, the Ascaris rate can reach 99%, and the effect on blood spear nematode, celiac filariasis and so on is good.

two? Are you sure? (domestic Bayer 9015 or Bilefeng): per kilogram live weight: 2: 4 mg for buffalo and 4-6 mg for yellow cattle. This drug is safe and effective for larvae, and the deworming rate is about 75%.

three? Luckily, ┕ mountain, Kui Khan, rime, ㈤, Tar slips? Jin, Chi Ling 0.2 kg, water 5 kg, fry into 2 kg medicine solution with slow fire, feed with 1 ml per kg body weight after removing dregs, and re-feed once after 3 weeks, the safety is good, and the deworming rate is about 65%.

four? Taut? Chloroethane: 0.2g / kg live weight of hexachloroethane, 50g / kg buffalo and 20g / kg cattle. Because this medicine is a powder, you can put the medicine in the oblique bamboo tube, put an appropriate amount of water in the tube first, and one person can help lead the cow's nose when filling the medicine. After opening the cow's mouth, one person pours the bamboo tube into the mouth and flushes the medicine into the esophagus with the water from the bamboo tube. This medicine has few side effects, but there is a phenomenon of diet reduction after feeding, and individual cattle are more likely to develop bloating (which can recover slowly on their own). The deworming rate of one-time feeding is about 75%.

II. Prevention

The spread of the disease is mainly caused by the spread of eggs in feces, so cow manure should be composted and fermented to kill eggs before being used as fertilizer. If there are conditions to strengthen the management of grassland, the grassland should be drenched every year with 1 ∶ 5000 ammonia or tea cake liquid at the end of autumn and the beginning of winter and early spring, which can not only be used as fertilizer but also kill snails, the intermediate host of Boletus leech, and pay attention to the drinking water sanitation of cattle at ordinary times.