Why do female dogs miscarry

1. Among infectious cases, the most common one is abortion caused by Brucella bacteria in dogs. This bacteria is highly contagious, especially Beagle dogs are very susceptible. feel. Sick dogs can also infect people and cause miscarriage in pregnant women. Secondly, infection with Staphylococcus aureus, Escherichia coli, and Salmonella can cause miscarriage in older female dogs. Occasionally, infection with canine distemper virus causes miscarriage.
2. Lack of progesterone. Generally, it is caused by incomplete formation of the corpus luteum in pregnancy, and there are also cases of early degeneration of the corpus luteum.
3. Miscarriage may occur when the fetus is dead or abnormal. When the heart of a pregnant female dog fails, such as heartworm disease, fatty heart and other diseases, the circulatory system disorder of the female dog directly affects the material exchange with the fetus. As a result, the fetus is hypoxic or carbon dioxide accumulates, causing Fetal death. Generally speaking, when inbreeding and infection with infectious diseases occur in early pregnancy, deformed dog fetuses are prone to miscarriage.
4. Traumatic stimulation, improper feeding and management of pregnant female dogs, medical errors, etc. can also cause miscarriage.

Abortion symptoms in female dogs

1. Abortion caused by Brucella usually occurs on the 30th to 57th day of pregnancy; abortion with incomplete luteal formation is common on the 2nd day of pregnancy -5 weeks; early luteal degeneration abortion is more common in the 6th to 7th weeks of pregnancy. In all cases of abortion, 80% of female dogs occur on the 45th to 55th day of pregnancy. (Although there are cases of miscarriage due to early embryonic death on the 10th to 35th day of pregnancy, the discharged fetal membranes and fetus are often eaten by the female dog and are not easy to detect).
2. Usually, after a pregnant female dog has an abortion, secretions continue to flow from the vagina for a long time (1 to 6 weeks), and the aborted fetus dies quickly.
3. The incidence of fetal malformations in fetuses infected with infectious diseases in early pregnancy is very high. Most of the malformed fetuses are chest underdevelopment, sternum deformation, etc.
4. Non-infectious miscarriages often occur suddenly without early symptoms.

Diagnosis of abortion in female dogs

1. The diagnosis of Brucella infection can be confirmed by isolation and culture of the aborted fetus or placenta (or serum agglutination test in female dogs).
2. If Toxoplasma infection is suspected, the organs of the fetus can be examined, especially the protozoa of the fetus or tissue sections can be performed to confirm. The complement fixation reaction of the blood status of the female dog can also be used for diagnosis.

Treatment of abortion in female dogs

1. Abortion in dogs often occurs suddenly and is almost uncontrollable. To prevent miscarriage, bitches should be checked for infectious diseases such as brucellosis before breeding. For female dogs with a history of miscarriage, progesterone can be injected during pregnancy to prevent miscarriage.
2. For dogs suspected of progesterone deficiency, use progesterone oil 5 to 25 mg for intramuscular injection 2 to 3 times a week; or use continuous progesterone preparation 25 mg for intramuscular injection once a week.
3. If the sick dog is weak, treat it promptlyInfusion and sugar supplementation. When the body temperature rises and the blood picture shows inflammatory changes, antibiotics should be injected.
4. For symptoms such as difficulty in fetal expulsion, retained placenta or uterine bleeding, oxytocin and other oxytocin drugs should be injected (the dosage is 2-10 units/time). For cases where the fetus has become corrupted, in addition to injecting antibiotics, the reproductive tract should also be flushed with 0.1% potassium permanganate solution.