The hind legs can not stand upright to prevent the cow from falling to the ground after delivery.

Postpartum failure of dairy cows is a common disease of postpartum dairy cows, which is paralyzed and unable to afford lying on the ground due to the lack of blood calcium, vitamins and trace elements in pregnant cows.

Cow

The most common occurrence of postpartum cow falling to the ground is from late autumn to early spring. The clinical feature is that the cow can not afford to lie down for a long time after delivery, treated with calcium preparation, no reaction, consciousness and consciousness, and normal appetite. This disease is a complication of postpartum paresis in dairy cows. due to the delay of treatment time and insufficient dosage of therapeutic drugs, the lying time of dairy cows is too long, resulting in local ischemic necrosis. Due to improper midwifery, paralysis and lying down during delivery, attempts to struggle to stand during treatment may cause traumatic injury to lumbar muscles and nerves, which not only directly causes long-term lying down, but also releases myoglobin during muscle injury, so it is often accompanied by proteinuria. Due to the excessive amount of high-protein and high-energy feed during the dry period, excessive fat in dairy cows leads to liver steatosis, and the toxic substances produced during the abnormal fermentation of feed in the rumen are easy to cause body poisoning.

Incidence: the disease mostly occurs in cattle within 15 days after delivery, and there is no obvious difference between seasonality and fetal order. In terms of clinical incidence, it occurred more frequently from late autumn to early spring, the first and third pregnant cows were more common, and only the second birth was rare.

Clinical symptoms: loss of appetite, normal body temperature, heart rate of 80 ~ 100 beats per minute, tachycardia or arrhythmia in some diseased cattle. Most of the diseased cattle try to stand frequently, but their hind legs can not be completely straightened, so they can only crawl along the ground with two partially flexion hind legs, and some of them move backward and show a dog sitting posture.

Diagnosis: diagnosis was made according to the clinical symptoms and onset time of dairy cows. At the same time, the functions of liver, kidney and myocardium should also be examined, especially the degree of injury of motor organs to see if there are nerve paralysis, muscle rupture, bone dislocation, tendon rupture, fracture, postpartum hypocalcemia paresis and so on. The degree of organ damage in cattle can be diagnosed by visual examination, palpation, including rectal examination, urine examination, breast examination and from the perceptual sensitivity and standing performance of cattle, and combined with blood biochemical examination can contribute to clinical diagnosis.

Treatment: ① intravenous injection of 20% calcium gluconate 500ml, pilocarpine hydrochloride 5mg, 5% sodium gluconate 1000 ml, 10% glucose 1000 ml, sodium caffeine 3 g, vitamin B12 g, vitamin C 10 g, twice a day. If the cow can not stand after 3 days of treatment with the above prescription, the cow can stand manually for more than half an hour every day from the 4th day. At the same time, on the basis of the above prescription, 20 mg of dexamethasone is added, pilocarpine hydrochloride is removed, and intravenous injection is given for 3 days. ② was injected with 0.1% strychnine nitrate injection 5 ml Baihui acupoint, once a day for two days. After stopping the injection, the cows were fed with stomach-invigorating traditional Chinese medicine, supplemented with vitamin B, baking soda and other gastrointestinal functions.