Various Reproductive Organ Diseases of cattle (1)

I. endometritis

It is an important cause of cow infertility, which can be divided into acute and chronic.

Causes and symptoms: postpartum cows (including abortion, dystocia treatment, mating) are caused by the invasion of bacteria and other microorganisms. There are brucellosis, trichomoniasis, unreasonable operation and drug stimulation will be the inducement. During the acute attack, the body temperature rises, the appetite decreases, the spirit is low, the back is arched, the responsibility is hard, and the urine is frequent. Mucous and purulent exudates flow out from the vulva, there is a fishy smell when lying down, the temperature can be increased during rectal examination, the uterine horn becomes thicker, thicker, sinking, the contractile reaction is weak, and the son has a sense of fluctuation. Abnormal estrus cycle during chronic inflammation, repeated infertility or occult abortion, turbid floc mucus flowing from the vulva during estrus or lying down (including transparent but small floc), vaginal and cervical mucus congestion, swelling, cervix microopening.

Treatment: uterine flushing is an effective method for the treatment of chronic and acute inflammation. Drugs can be selected from sodium chloride saline, potassium permanganate, furacilin, Rivannul, chlorhexidine and other solutions, and then combined with the injection of antibiotics, such as green, streptomycin, chlortetracycline, etc., the use of antibiotics should be selected through drug sensitivity test.

II. Premature delivery and miscarriage

Refers to the destruction of the gestation relationship between the embryo or fetus and the mother, interrupting the pregnancy. Cattle before 210 days of age are aborted, while those born between 210 and 269 days are said to be premature.

Causes and symptoms: there are many causes of abortion, such as infectious abortion, parasitic injection of labor, general abortion also includes interruption of nutrition between mother and child, disorder of reproductive hormone secretion, external force (or mechanical), toxicity, etc. most of them are caused by improper feeding and management or dietary imbalance. In the early stage of pregnancy, the embryo is still fully developed and absorbed by the mother, only in the disappearance of the corpus luteum of pregnancy. The re-emergence of estrus is not easy to detect clinically. About 2 months of pregnancy has basically taken shape (the fetal body is up to 8 cm). For some 3-7-month-old cows, there will be signs of abortion, such as vaginal swelling and hyperemia, mucus outflow mixed with blood, breast swelling and even lactation. Part of the cow abortion showed hard responsibility, arched back, frequent urination and so on. If the fetus is edematous, emphysema, dark, necrotic and rotten, it is a miscarriage caused by uterine inflammation. As a result of trauma, many fetuses are fresh in color, and even discharge live fetuses. Rectal examination was found, such as fetal mummies, the only bones are mostly caused by water absorption of stillborn fetuses or spoilage caused by pathogenic microorganisms in the uterus, and their soft tissues are dissolved and excreted, while bones remain. The corpus luteum of pregnancy still exists on the ovary, so it is not easy to find it in clinic. Sometimes it is the reason why pregnant cows are tested again before dry milk. Treatment: according to statistical reports in recent years, aborted cattle account for more than 10% of breeding cattle of appropriate age. Prevention should be carried out mainly from the aspects of improving feeding and management, actively finding sick cattle and giving thorough treatment in advance, and reducing operation pollution (prenatal, postnatal and mating period). If Shi Fu finds that there is an aura of injection of labor, drugs can be used to protect the fetus, such as progesterone, chloral hydrate and administration of Chinese herbal medicine to calm the fetus. If it is impossible to prevent miscarriage, midwifery should be tried (according to the method of dealing with dystocia). The treated cattle only need to prevent the occurrence of uterine inflammation.