How to do if the placenta of the cow does not fall after delivery? medication should be taken according to the specific situation.

There are many treatment methods for postpartum retention of placenta in cows, including uterine perfusion with hydrogen peroxide or 5% murine 10% hyperosmotic saline, or subcutaneous intramuscular injection of oxytocin and estradiol benzoate, etc. the main causes of postpartum placenta retention in cows are placental infection and inflammation, postpartum uterine contraction weakness, placenta aging or immaturity, placenta congestion or edema and so on.

1. Treatment of postpartum placenta in cows

1. Take motherwort water twice a day for 3 consecutive days, or use oxytocin for intramuscular injection.

2. To prevent infection of cow uterus, 0.1% Livano solution can be used to rinse cow uterus.

3. If the drug treatment is not effective after two days, surgical treatment should be performed immediately to remove the placenta.

4. Pituitrin is injected intramuscularly, or ergot maleate is injected intravenously to promote uterine contraction.

5, estradiol benzoate injection, intramuscular or subcutaneous injection, wait for 1 hour, intramuscular injection with oxytocin, need to be repeated after 2 hours, so as to promote uterine contraction.

6. Infuse the uterus with 5% Rue 10% hyperosmotic saline or hydrogen peroxide to separate the placenta so that the placenta is exfoliated and excreted completely.

7. To prevent uterine infection, 1% Mel 1.5% Gongyanqing can be used to rinse the uterus. 8. Cows can be treated by intravenous injection in turn. 5% glucose and sodium chloride plus gentamicin and dexamethasone can also be used with 0.5% iodine solution, 1 gram of potassium iodide and 100 ml of distilled water to rinse the uterine and fetal membranes to peel off the cow placenta.

II. Preventive measures

When breeding, feed rich in calcium and vitamins should be fed to strengthen the exercise of the cows. after production, the cows can lick and dry the mucus of the calves by themselves, and related drugs can be used after delivery to promote the recovery of the uterus and the excretion of the placenta. it can also prevent diseases such as endometritis.

Second, the main reasons for the retention of placenta in postpartum cows.

1. Inflammation of fetal chlamydia: during pregnancy, the uterus is infected with salmonella, mycoplasma, mold, Trichomonas, listeria, fetal vibrio, Toxoplasma gondii, etc., or suffers from placenta and endometritis, resulting in partial hyperplasia of hoof tissue and adhesion between calf placenta and cow placenta.

2. Placenta tissue structure: cow placenta belongs to the mixed placenta of epithelial chorion and hoof tissue chorion. Calf placenta is closely related to cow placenta, which is also one of the reasons for postpartum retention of placenta.

3. Weakness of postpartum uterine contraction: the main reason for this is that the feed is too simple, resulting in malnutrition of cows, resulting in lack of phosphorus, calcium, selenium, vitamins An and E, etc., as well as weight loss or obesity, old age, weak physique, too large fetus and lack of exercise can cause postpartum placenta retention of cows. Secondly, long stage of labor, excessive fetal fluid, preterm delivery, abortion, production paralysis, uterine muscle fatigue, not breastfeeding calves in time, etc., resulting in insufficient release of oxytocin, which also affects the exfoliation of uterine muscle placenta.

4. Aging or immaturity of placenta: there will be aging of placenta, mainly due to the proliferation of hoof tissue of cow placenta and thickening of surface tissue of cow cotyledons, so that the villi are clamped in the glandular fossa, the endocrine will be gradually weakened, and the placenta is not easy to peel off. There is no mature placenta, the collagen fibers of maternal cotyledons are wavy, and the outline is relatively clear, so it is difficult to separate the placenta. In general, the earlier the time of preterm delivery, the higher the incidence of placenta retention.

5, placental congestion or edema: in the process of production, strong contraction of cow uterus or closure of umbilical cord vessels too quickly will cause placental congestion, make villi clamped in the glandular fossa, and edema will appear in glandular fossa and villi. It is not easy to expel the blood in the villi. The edema of placenta can extend to the tail of villi, as a result, the pressure in the glandular fossa can not be reduced, and the placenta tissue has been closely linked, so that the cow placenta can not come down.