Calcium deficiency is a common disease in dairy cows. The use of calcium to treat the disease is a more common method. However, in clinical practice, calcium is used repeatedly for the first time because of insufficient doses of calcium for the first time. Serious cases of excess calcium, or failure to monitor the heart during treatment, are frequent. Therefore, in the use of calcium for the treatment of dairy cows, the following issues should be noted:
1. It is necessary to observe the production and living conditions of dairy cows as often as possible. Once the cows are found to have slow movements, poor mood, loss of appetite, reduced milk volume, and decreased quality, timely diagnosis should be made and calcium should be used for treatment as soon as possible. .
2, calculate the dose to be clinically treatment of dairy cows production quail, often used calcium preparations are calcium gluconate injection and calcium chloride injection. One 500-kilogram cows were treated with a dose of 10% calcium gluconate injection 1222 ml or 5% calcium chloride injection 806 ml.
3, calcium dosage should be sufficient for the first intravenous calcium agent should be used slightly higher dose. 8 to 12 hours after the injection, if the effect is not yet significant, the cow's condition does not improve, it is necessary to repeat the original dose, but can not exceed 3 times. In addition, during the second injection, slowly inject 15% sodium dihydrogen phosphate injection 200-500 ml, 15% magnesium sulfate injection 150-200 ml, can promote recovery.
4. The intravenous injection rate of slow intravenous calcium is too fast, which can increase the heart rate of the cows, arrhythmia, and severe death. Therefore, intravenous calcium injections should be slow.
5, listen to the heart should be strictly in the process of calcium injection, the operator should closely monitor the beating of the heart of the cow, especially in the injection of 1/3 dose should be particularly careful. Normally, the number of heartbeats of the cow begins to decrease when a certain dose is injected, and then gradually returns to the original heart rate level, indicating that the dosage is optimal and the injection can be stopped. What needs to be reminded is that if the heart rate of the dairy cow with little change in heart rate is found to be significantly higher in the calcium injection and the heart beat becomes powerful and begins to have irregular heartbeats, the injection should be stopped immediately, otherwise the risk of overdose will occur. .
6, the injection operation to be fine to the cow intravenously calcium to be careful operation, can not let the liquid leaked outside the blood vessels, so as not to cause local swelling or even necrosis. If the liquid is inadvertently leaked out, the liquid should be sucked out in time, and 10 to 15 ml of 25% sodium sulfate solution should be injected to form insoluble calcium sulfate to relieve local irritation.
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