Prevention and treatment of bovine hyperhidrosis caused by ruptured long nodules on the body surface

Bovine hyperhidrosis, the scientific name bovine accessory filariasis, is caused by the parasitism of bovine parasitosis in the subcutaneous tissue and intermuscular connective tissue of cattle. Its characteristics are: subcutaneous nodules are often formed on the body surface of cattle in the warm summer and autumn seasons, nodules form rapidly in a short period of time, then break quickly within a few hours, and heal themselves after bleeding, and occur repeatedly after an interval of 3-4 weeks. this kind of bleeding is very similar to sweat beads, so it is commonly known as sweating disease.

Cattle

First, popular characteristics.

Bovine hyperhidrosis usually occurs from June to October every year, and the peak period is from July to August, especially when it is sunny and hot after rain, decreases gradually in September, and stops from late autumn to winter. Clinical statistics show that there are more buffaloes than yellow cattle, more strong cattle than weak, sickly and old cattle, and more fat and thin cattle than dense and thin cattle.

Second, clinical symptoms

The main results are as follows: 1. Hemorrhagic disease characterized by exudative bleeding, ranging from needle tip to mung bean size, scattered or sometimes in patches, appears on the body surface. It often occurs in the waist, back, shoulder nail and ribs, and sometimes forms slightly raised nodules in the neck and waist. The nodules often appear suddenly, rupture after a few hours, flow of blood, and then disappear. Nodules appear in different places after an interval of 4 weeks, and occur repeatedly until the weather becomes cold, and it will happen again after the weather is warm the next year. The outflow of blood is mixed in the sweat when the cattle are sweating in large amounts, which is similar to local massive hemorrhage. When the cow is less sweaty or non-sweaty, the blood flows down the hair, forming a dark red blood stain line.

2. Except for local epidermis bleeding, there are no obvious changes in body temperature, pulse, respiration, appetite and spirit in the short term, which will not directly cause the death of cattle. However, when the cattle are seriously infected with parathyrofilaria and harassed by a large number of stinging flies and mosquitoes, it will affect the normal rest and feeding of cattle, and long-term chronic blood loss will also affect the growth and development of cattle, resulting in growth retardation, physical decline and poor service. serious secondary infection can lead to death.

III. Prevention and treatment

1. Drug therapy. Intramuscular injection of ivermectin 5 mg / kg, 3 times, once every other day; avermectin 0.05 g / kg, 3 times, once a day; lithium antimony thiomalate 6% solution 30 ml, once every other day, 2 times; antimony potassium 50 ml, 3 times in a row, 4 days apart. Oral avermectin-7051 g / kg, 5 times, once a day. Fenvalerate 200 mg / kg can also be applied or bathed to kill nematodes, adults, microfilariae, mosquitoes and flies on the surface and under the skin.

2. Eradicate mosquito and fly breeding places. Because mosquitoes and flies like to spawn and breed in moist weeds, various livestock and poultry droppings, garbage and ditches, it is necessary to dredge the ditch in time, remove feces, garbage and weeds, and carry out harmless treatment such as landfill or fermentation, so as to keep the cattle pen clean at any time.