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Qingfeng, Shandong | Diagnosis of several common diseases causing wasting of cattle
Release time:
2021-12-06
Cattle lack of trace elements in pastures should be paid attention! Avoid unnecessary losses to the ranch! Decreased appetite, insufficient feeding, weight loss, hair loss, cracked hooves and reproductive disorders, pica, chronic diarrhea and other diseases.
01
paratuberculosis
Bovine paratuberculosis, also known as paratuberous enteritis, is more common in dairy cows, is a chronic interstitial diarrhea, but the duration is longer, some show intractable diarrhea, over time, animals appear emaciated. This disease can be popular in ruminants. The most obvious feature is long-term, chronic, intermittent diarrhea, reduced lactation, submandibular and fleshy edema, but the body temperature is not high. The necropsy showed that the intestinal mucosa of the jejunum and ileum of the diseased cattle thickened several times, forming cerebral gyrus-like folds, characterized by necrosis but no caseous substance.
The pathogen of this disease is mycoplasma. Sick cattle with acute contagious pleuropneumonia developed dyspnea. Animals with chronic infectious pleuropneumonia are getting thinner and thinner due to long-term intermittent, painful short cough, resulting in digestive disorders and poor appetite. The body temperature of the sick animals of acute pleuropneumonia does not rise, while the chronic type is only low-grade fever and sometimes absent. Due to pleural thickening and adhesion with ribs, percussion can be semi-turbid.
The disease caused by pseudotuberculosis Corynebacterium local abscess, severe when spread to the whole body, causing multiple abscesses. Sick cows are emaciated, weak, anaemic and even die. The autopsy shows that there are multiple abscesses in the whole body of the sick cow, which can sometimes spread to the respiratory tract and cause lung cavity, elevated body temperature and cough. It is similar to influenza, but the mortality rate is very high. Attention should be paid to distinguishing.
Cattle suffering from parasitic diseases are chronic, intermittent, progressive weight loss, anemia, edema, some animals have neurological symptoms, horses are more obvious. Buffalo is the most susceptible, characterized by dry skin, skin temperature drop, and finally dry skin, necrosis, severe tail tip can be necrotic off. Sick cattle lower limb swelling, chest edema, unexplained claudication, like rheumatism. Sick cows have difficulty lying down or even lying down, similar to exhaustion.
The protozoa of babesiosis parasitize in red blood cells, which are ring-shaped or double-bud-shaped, and can be found in blood slices. Because the disease is transmitted by the fan-head tick, it mostly occurs in places with more tick activity. Wasting is only one of the clinical manifestations of babesiosis. In addition to wasting, the clinical characteristics of sick cows still have symptoms such as body temperature rising as high as 41.8 ℃, persistent, visible pale mucosa, anemia, excretion of erythroproteinuria, edema of eyelids and limbs, etc. Blood smears can find worms in red blood cells.
Bovine liver fluke disease is a chronic wasting disease, adult parasites in the bile duct, can cause cholangitis, bile duct obstruction, substantial hepatitis, cirrhosis. Clinically, diseased cattle are characterized by digestive disorders, anemia, diarrhea, weight loss, subcutaneous edema of the lower jaw and chest. The intermediate host of the disease is a freshwater snail, which is fed to cattle with a large amount of aquatic grass, often resulting in cattle suffering from liver fluke disease. Diagnosis of the disease relies on the discovery of the eggs of the liver fluke in cow dung.
Before and after the course of the disease, schistosomiasis, twisting blood lance nematode disease is a chronic process, animals appear unexplained weight loss, but also the diagnosis of weight loss diseases first suspected parasitic infection. In addition to the diagnosis of animal weight loss, should be given appropriate nutritional food, it is very important to collect feces, detection of parasite eggs. Clinical use of levimidazole and other anthelmintic drugs for treatment, and observe the effect of anthelmintic, disease diagnosis has important value.
The cause of feed shortage, long-term protein, energy supply is insufficient, animal labor, production burden is too heavy, the body caused by excessive consumption of nutrients. Ruminant trace element cobalt deficiency, certain parasitic infections, in vivo purulent diseases and blood protozoal diseases can accelerate the occurrence of nutritional exhaustion. The occurrence of nutritional exhaustion is a progressive process. The most obvious clinical symptoms of diseased cattle are emaciation, low body temperature, decreased appetite, excessive emaciation, animals lying more and standing less, walking and shaking, and later lying on the ground. Sick cattle skin often bedsore formation, blood viscosity, serum total protein, albumin concentration decreased, the disease is easy to diagnose, but not easy to find out the cause of the disease.
CobaltDeficiency is a disease characterized by emaciation that is easy to occur in ruminants and rabbits, rats and other animals that have the habit of eating soft feces. This is because cobalt is an essential trace element for the growth and reproduction of bacteria in the digestive tract, and is also an important raw material for the synthesis of cobalamin by these bacteria. The sick animal is emaciated, weak, has pica, is withered and brittle, the mucous membrane is pale, and the two tears flow continuously. The concentration of glucose in the blood decreased and the activity of alkaline phosphatase decreased. The diagnosis can be established by adding cobalamin to the feed, which can quickly return to normal. Urinary methylmalonic acid and iminomethylglutamic acid levels were elevated, especially the subunit glutamate was more sensitive.
CopperDeficiency is a disease prone to cattle, sheep and other ruminants, often caused by copper deficiency in the soil environment or excessive molybdenum content in forage. Animal performance long-term chronic diarrhea, emaciation, thin dung can flow down along the anus, hind legs, by the tail to the hindquarters, stained coat. In addition to emaciation and diarrhea, the coat fades, turns black to gray, and turns red to yellow. In particular, the color of the fur around the eyes is lighter and looks like a pair of glasses, also known as glasses cow.
ZincDeficiency, because the active ingredient of taste that produces appetite is zinc, various animals have decreased appetite due to zinc deficiency, and animals become emaciated due to reduced appetite and insufficient food intake. Zinc-deficient animals are characterized by increased dander, hair loss, cracked hooves and reproductive disorders.
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