Write a short note on cattle diseases caused by parasites along with measures
followed to get rid of them.
Answers
Answer:
Parasitic diseases of cattle impair health, reproduction, growth, and productivity. In severe cases, parasitic diseases may even cause death. These diseases are caused by internal helminths (roundworms, tapeworms and flukes) as well as external arthropods (mites, lice, ticks, and flies). Transmission of helminths is through oral ingestion or direct skin penetration by larval parasites on pasture. Transmission of arthropods is through direct contact (mites and lice) or exposure to larval stages on pasture (ticks) or fly-in by adult flies or skin penetration by larval flies (grubs).
Treatment
Best practices include cattle being treated at the beginning of a roundworm/fly or lice infection period with a long acting product to eliminate existing roundworm or arthropod parasites and prevent reinfection if the animals are in an environment where there is infection challenge.
Cattle are treated in fall to prevent lice infestations and to clean up summer worm infections in Northern states with an endectocide or a combination of an internal and external parasiticide.
Cattle are treated for liver flukes with a product labeled for flukes when animals are heavily infected or two months after the snails (intermediate host) have gone into estivation (dormancy). This is: September in the Southeast or February in Northwest.
Cattle raised in confinement should be treated to clean up existing mite/lice infections or before adding new animals to the existing herd with an endectocide or external parasiticide.
Prevention
For internal parasites, raise cattle on dry lots or cultivated crops. For lice or mites, quarantine new animals and treat for infection before mixing with herd. For cattle grazing on permanent pasture, treat with an endectocide at the beginning of the grazing season. Graze worm-free calves on larval-free pastures before grazing cows.
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Answer:
Parasitic diseases of cattle impair health, reproduction, growth and productivity. In serve cases, parasitic diseases may even cause death. These diseases are caused by internal helminths as well as external arthropods.