In summer, the temperature is rising, and many cattle suffer from infectious keratoconjunctivitis, which is also called “red eye disease†by cattle farmers. This disease is one of the high-risk diseases in summer cattle farms. It is less common in other seasons. Under normal circumstances, it does not threaten the life of cattle, but in severe cases, it can cause blindness of cattle and affect normal eating and rest. Today, we will introduce in detail the clinical characteristics, pathogenesis and prevention and treatment of bovine red eye disease, and hope to help the majority of cattle farmers!
First, clinical features
The clinical features of bovine contagious keratoconjunctivitis are obvious inflammatory changes in the cornea and conjunctiva. The cows may have photophobia, tearing, pain, conjunctival flushing and swelling, corneal opacity or ulceration, and turbidity is milky white. Most bovines have normal body temperature, and the body temperature of some infected individuals with serious infections or other diseases may increase. If timely and effective treatment is not available, the cornea may appear in the eye of the cow or appear pale blue, and serous, mucous or purulent secretions may flow out of the eye. If left untreated for a long time, the inflammation can turn chronic, and there will be varying degrees of visual impairment. In severe cases, blindness can result.
Second, the cause of the disease
1. Mechanical stimulation or damage: such as various foreign bodies (sand, weeds, debris, coats or insects) entering the bull's eye, or the stimulation of the bridle, lash inversion, parasitic body and so on.
2, chemical drug stimulation: such as various disinfectant drugs or pest control pesticides into the bull's eye.
3, poor ventilation of cattle house: cattle with poor health and poor ventilation, will produce ammonia, carbon dioxide, hydrogen sulfide and other toxic and harmful gases to stimulate the bull's eye.
4, adjacent tissue lesions: such as infection around the eye suppuration (upper frontal sinus, etc.), eye parasites (sucking nematodes, etc.), can cause bovine contagious keratoconjunctivitis.
5, mosquito bites: When the mosquito bites the eye, it can also cause bovine contagious keratoconjunctivitis.
6. Infectious diseases: diseases that can directly cause bovine infectious keratoconjunctivitis include chlamydial eye diseases, etc., which can indirectly cause infection of bovine contagious keratoconjunctivitis, such as foot-and-mouth disease and bovine flu.
Third, the prevention and treatment program
1. Repeat the rinsing of the affected eye with normal saline. After rinsing, add eye drops or apply eye ointment. Perform 2~3 times a day. Generally, it can be restored after 3~5 days.
2, 2% alum water or 2% boric acid solution for repeated washing of the affected eye, and then rinse off the liquid with physiological saline, rinse 2 to 4 times a day until it returns to normal.
3, Prunella 18 ~ 30 grams, 300 ml boiling water brewing, clarification to slag, divided into 3 parts, each time using 1 part of the washing eye, rinse 3 times a day, until normal. Square 4: fresh pomegranate young leaves 30 grams, add water 500 ml, fry into 250 ml, rinse the affected eyes after slag filtration, rinse 2 to 3 times a day, can effectively treat keratoconjunctivitis redness and itching.
5, fresh cloves leaves 30 grams, add 500 ml of water, fry into 300 ml, rinse the affected eyes after slag filtration, rinse 2 to 3 times a day, can effectively treat keratoconjunctivitis itching and phlegm.
6, 8 million units of penicillin, streptomycin 4 million units, add 500 ml of normal saline and mix evenly, repeatedly wash the affected eye, 3 times a day, usually for 3 to 5 days to return to normal.
7, when the cattle are more serious, the eyes appear purulent or thick corneal sputum, should be used for surgery, and use procaine penicillin 40 ~ 800,000 units of eyelid subcutaneous injection or temple injection, daily 1 Once, it usually takes 5~7 days to return to normal.
Fourth, how to prevent
1. After entering the summer, the cow house should be cleaned and disinfected. The manure should be cleaned up in time to avoid accumulation of toxic and harmful gases in the barn for a long time.
2, strengthen ventilation to reduce the humidity of the barn and replace the fresh air, if the temperature is too high, you should also find ways to cool the barn, such as building a sunshade net, increasing the exhaust fan, spraying water on the cow body.
3. Install the screen nets on the doors and windows of the barn, use mosquito-killing lamps or sticky fly paper inside the barn, and regularly spray drugs on the inside and outside of the barn to eliminate mosquitoes and flies and reduce the nuisance caused by mosquitoes and flies.
Note: When there is infectious keratoconjunctivitis in cattle, it should be treated in isolation to avoid contact with healthy cattle and comprehensive disinfection of the barn. At the same time, it is also possible to use electrolyzed multi-dimensional, astragalus polysaccharides or clearing poisonous drugs to drink water to improve the resistance of healthy cattle to reduce the incidence.
The above is the introduction of the clinical characteristics, pathogenesis and prevention and treatment of bovine red eye. It is not difficult to raise cattle. The most important thing is to see if the cattle farmers really care about their cattle.
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