Cross-infection and safe injection in pigs
(1) sterilization of inoculation equipment. Inoculation equipment syringes, needles, etc. must be sterilized in strict accordance with the requirements.
(2) one needle per pig. Strictly guard against the method of injection in the end. It is best to change a needle for each pig injected.
(3) Emergency vaccination sequence. Emergency immunization should be carried out in the order of relatively clean group, assumed health group, threatened group and disease group. The disease group was carried out in the order of asymptomatic, mild symptoms and severe symptoms.
(4) the problem of safe scientific injection. Intramuscular injection behind the ear.
(5) immunity of pregnant pigs. Under normal circumstances, the exception of emergency immunization of sows during pregnancy should be avoided.
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Neurological symptoms caused by disturbance of calcium and phosphorus metabolism in chickens
Strictly speaking, the neurological symptom disease caused by calcium and phosphorus metabolism disorder should be expressed as osteomalacia, which is characterized by deformed keel, powerless expansion of ribs, brittle and easily broken legs, weak breathing and difficulty in walking, no sense of grip, and is common in chicks. It is also easy to occur in all kinds of caged chickens. In addition to the incoordination of the proportion of calcium and phosphorus, the deficiency of vitamin An and D3 is also one of the reasons for the disturbance of calcium and phosphorus metabolism. The most common pathological changes in pathological examination were hyperplasia of rib vertebrae and severe deformities at the junction of ribs and cartilage. In
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Prevention and treatment of fascioliasis in cattle and sheep
Fasciola hepatica of cattle and sheep is a serious parasitic disease caused by Fasciola hepatica parasitic in the liver and bile duct of cattle and sheep. The disease can cause acute and chronic hepatitis and cholangitis in cattle and sheep, accompanied by systemic poisoning and nutritional disorders, which reduces the production performance of cattle and sheep, causes a large number of deaths of young animals, and brings huge economic losses to animal husbandry production. The development of Fasciola hepatica needs an intermediate host, freshwater snail, so the disease is prevalent regionally, especially in rainy season and flood areas. 1. Main symptoms
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