Salt is a mineral feed and is an important component of gastric juice. It plays a role in promoting gastrointestinal digestion, maintaining the volume and osmotic pressure of cells inside and outside cells, and is very important for dairy cows. However, it is linked to many diseases of cows, which can make certain conditions worse, hard to cure, and even speed up death. Therefore, during the prevention and treatment of certain diseases of dairy cows, avoid and limit the use of salt.
Salt poisoning
Department of dairy cows caused by excessive salt intake, treatment should be completely discharged in the stomach, blood, tissue salt and its decomposition products as an important measure, is prohibited by any means such as oral, injection and other input salt or salt laxatives, Because the salt poisoning of dairy cows is mainly due to a large amount of salt to stimulate the mucous membranes of the digestive tract and cause toxic and hemorrhagic inflammation. After the salt is absorbed, the central nervous system is excited or paralyzed due to the action of sodium ions. If the cows consume salt poisoning, Feeding salt or using salt laxatives (such as sodium sulfate) will not only increase gastrointestinal irritation, but also increase the concentration of sodium ions in the blood, leading to increased severity and death.
2. Respiratory diseases
High sodium can increase the sensitivity of the tracheal smooth muscle, can increase the activity of the cell membrane sodium pump, enhance sodium penetration, and can cause pulmonary edema. Therefore, in the course of the major invasive respiratory diseases such as infectious tracheitis, mycoplasmosis, and aspergillosis in dairy cows, the amount of salt should be strictly controlled.
3. Constipation, acute gastric dilatation
When cows are suffering from constipation, acute gastric dilatation and severe constipation during the late period, salt should be avoided, otherwise cows are often killed.
4. Urinary system diseases
Too much salt can cause renal blood circulation urinary function and renal tubular reabsorption dysfunction, resulting in aggravation of a variety of diseases of the urinary system. Therefore, in the prevention and treatment of dairy cows urate disease, urethritis and other urinary system diseases, the harmful effects of salt can not be ignored.
5. Liver disease, nephropathy
When a cow's liver is sick, its ability to decompose the body's inherent antidiuretic hormones diminishes, causing the kidneys to produce less urine output, and sodium ions and water are retained in the bloodstream, which can aggravate the condition of ascites in the liver. Therefore, in the prevention and treatment of cow nephritis, breast edema and other diseases, salt should be carefully fed.
6. Rickets, bone soft disease, fractures
Too much salt can accelerate the loss of calcium, make the bone crunchy, and increase the pathological changes of rickets and bone soft disease. In addition, too much salt can also prevent calcium deposition in the bones, delaying and impeding bone healing. Therefore, in the treatment of cow rickets, bone soft disease, fractures and other diseases, the amount of salt should be limited.
7. Brain diseases
When cows suffer from cerebral softening, brain tissue softening, edema, hemorrhage, and necrosis can occur. The excessive intake of salt, because it can cause cerebral arterial stenosis, cerebral artery wall damage and poor brain blood supply and other harmful effects, can make the condition of aggravated brain softening, so at this time the cow must be careful feeding salt.
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