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The diagnosis of the disease is complex since there are multiple possible causes and cattle are reluctant to display any indications of pain. [ 4 ] The disease manifests itself most often in calves within four weeks of weaning , when calves are sorted into groups of roughly 10-15 in number, and sold to different feedlots via train, tractor ...
Parasitic bronchitis, also known as hoose, husk, or verminous bronchitis, [1] is a disease of sheep, cattle, goats, [2] and swine caused by the presence of various species of parasite, commonly known as lungworms, [3] in the bronchial tubes or in the lungs. It is marked by cough, dyspnea, anorexia and constipation.
Diagnosis is typically based on history and clinical findings when the veterinarian examines the cow. [2] Symptoms of hardware disease vary depending on where the object penetrates. [3] The cow exhibits an arched back, a reluctance to move and a slow, careful gait. The cow may groan when lying down, getting up, defecating and urinating.
This disease affects the upper respiratory tract as well as the reproductive tract of cattle, and is commonly found in feedlots across North America. [2] Clinical symptoms include fever, serous to mucopurulent nasal discharge, coughing, sneezing, difficulty breathing, conjunctivitis and loss of appetite. Ulcers commonly occur in the mouth and nose.
Diagnosis basically relies on a combination of postmortem analyses, clinical signs displayed by the animals, and response to drenching. In heavy infection, symptoms are easily observed in sheep and cattle as they become severely anorexic or inefficiently digest food, and become unthrifty.
An estimated 400,000 cattle infected with BSE entered the human food chain in the 1980s. [citation needed] Although the BSE epizootic was eventually brought under control by culling all suspect cattle populations, people are still being diagnosed with vCJD each year (though the number of new cases currently has dropped to fewer than five per ...
A more acute form of East Coast fever called corridor disease occurs when buffalo-derived T. parva is transmitted to cattle. [3] Another form, called January disease, only occurs over the winter months in Zimbabwe due to the tick lifecycle. [citation needed] Native cattle are often resistant to the parasite, but not without symptoms. They are ...
In the 1980s and 1990s, bovine spongiform encephalopathy (BSE or "mad cow disease") spread in cattle at an epidemic rate. The total estimated number of cattle infected was approximately 750,000 between 1980 and 1996. This occurred because the cattle were fed processed remains of other cattle.