Time, continuous 1 to 4 times, but not more than 3,000 micrograms of the total. Generally 15 days after treatment to 20 days, the cysts gradually disappeared and returned to normal estrus ovulation.

pituitary either follicular cysts or corpus luteum corpus luteum cyst, an intramuscular injection of 200 international units of cattle and 400 international units, usually 3 days to 6 days after the cyst symptoms disappeared, the formation of corpus luteum, 15 days to 20 days to resume normal estrus. as 1 week after treatment did not see better, to a second drug, the dose is slightly larger than the first.

hCG can promote the formation of corpus luteum function. cattle intravenous 2500 IU or 3000 IU intramuscular injection of 0.5 million to 1 million international units, dissolved in 5 ml of distilled water.

persistent corpus luteum

ovulation (without fertilization), the corpus luteum but not gone beyond the normal time, called persistent corpus luteum. the persistent corpus luteum secretion of progesterone continued to inhibit follicular development, resulting in long-suppressed estrus cow, causing infertility.

cause improper feeding management (feed, simply, lack of vitamins and inorganic salts, lack of exercise, etc.) uterine disease (endometritis, uterine fluid or empyema, incomplete uterine involution postpartum uterine fetal death or within the tumor, etc.) can affect the body back and absorb yellow, and a persistent corpus luteum.

symptoms of cow estrus cycle stopped for a long time without heat, rectal examination may touch the side of the ovary increased slightly harder than the real ovary. if more than the time that should be in heat and not heat, at an interval of 5 days to 7 days, the 2 to 3 times a rectal examination. if the corpus luteum location, size, shape and hardness did not change, then diagnosed with persistent corpus luteum. however, in order to distinguish between corpus luteum of pregnancy, the uterus must be carefully checked.

control should be eliminate the cause, to promote self-luteal regression. Therefore, we must improve the feeding and management according to the specific circumstances, or the first treatment of uterine disease. to make persistent corpus luteum rapidly shrinking, use of prostaglandin (PG) and its synthetic analogue, it is really effective luteal solvent. prostaglandin, usually 2 days after treatment to 3 days of estrus, breeding that is able to become pregnant. prostaglandin W 5 micrograms to 10 mg, intramuscular injection. forefront of enolase can be applied fluoride or cloprostenol 0.5 mg to 1 mg intramuscular injection. injection once, usually in a work week, such as ineffective can be an interval of 7 to 10 days to repeat.

Placenta Retention also said the afterbirth retention. is the cow after giving birth, after 8 hours to 12 hours is still not discharge afterbirth, is the afterbirth high. normally, cattle afterbirth from the time of not more than 3 hours to 5 hours.

cause of two main reasons, first, post-natal uterine contraction and weak, mainly due to a simple diet during pregnancy, the lack of inorganic salts, trace elements and certain vitamins; or produce twins, the fetus is too large and the child too much water, so that the uterus over-expansion. second, placental inflammation, infection occurs during pregnancy uterine endometritis and placenta hidden inflammation, mother and placenta accreta. In addition, miscarriage and premature birth and other factors can also lead to Placenta Retention.

symptoms afterbirth Placenta Retention is divided into parts, and no less than all high. part of the afterbirth to come down, that is part of the off and on from the break away from the cotyledons, and the rest stuck in the uterine cavity and vagina, usually imperceptible, and sometimes that arched back and tail held responsible for the phenomenon, and efforts . all that is no less than all the afterbirth afterbirth stuck in the uterus and vagina, only a few hanging in the shade outside the membranes, the umbilical stump and on the cotyledons of different sizes.

Placenta Retention, the initial body generally do not symptoms, after 1 day to 2 days after starting the stalled corruption afterbirth decomposition, sewage discharge from the vagina red fragments mixed with the stench of afterbirth liquid decomposition products Ruobei uterine absorption of corruption, there may be blood group defeated metritis and sepsis, the performance of cattle suffering from fever, depression, loss of appetite, lactation and reduction.

control treatment no less than a lot of afterbirth, summed up in drug therapy and surgery can be divided into two types of dissection.

to promote uterine contraction and accelerate afterbirth discharge. subcutaneous or intramuscular injection of vasopressin 50 IU to 100 international units, preferably 8 hours to 12 hours post-injection. such as the birth more than 24 hours to 48 hours, the results are poor . also injected 10 ml of oxytocin (100 IU), 6 mg of methysergide 10 mg.

surgical dissection. first with warm water enema, fecal excretion plot rectum, or hand dig to do. 0.11% potassium permanganate solution and then wash the vulva.