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Equine chorionic gonadotropin (acronym given as eCG but not to be confused with ECG) is a gonadotropic hormone produced in the chorion of pregnant mares. Previously referred to as pregnant mare's serum gonadotropin ( PMSG ), the hormone is commonly used in concert with progestogen to induce ovulation in livestock prior to artificial insemination .
Equine estrogens are found in the human medications conjugated estrogens (Premarin) and esterified estrogens (Estratab, Menest). [1] [2] [3.
The application of utilizing eFSH to increase the efficiency of equine embryo transfer was tested at the University of Saskatchewan.Embryos from 12 donor mares at 8 days of ovulation were recovered, scored, then transferred to 37 recipients mares who were tested for pregnancy after 7-10 days. 5 pregnancies resulted from the 15 embryos were recovered from the eFSA treatment group and 4 ...
Ovulation occurs about 109 hours after the start of follicle growth. Estrogen peaks at about 11 am on the day of proestrus. Between then and midnight there is a surge in progesterone, luteinizing hormone and follicle-stimulating hormone, and ovulation occurs at about 4 am on the next estrus day. The following day, metestrus, is called early ...
[7] [1] It may increase the risk of endometrial hyperplasia and endometrial cancer in women with an intact uterus if it is not taken together with a progestogen like progesterone. [ 7 ] [ 1 ] The medication may also increase the risk of blood clots , cardiovascular disease , and, when combined with most progestogens, breast cancer . [ 15 ]
Similar to the Hogben test, a small amount of the women's urine would be injected into the dorsal lymph sac of the male frog. Pregnant women contain the hormone human chorionic gonadotrophin in their urine. Therefore the presence of this hormone in the urine injected into the male frog, would cause the frog to release sperm within three hours. [21]
Gonadotropins are glycoprotein hormones secreted by gonadotropic cells of the anterior pituitary of vertebrates. [1] [2] [3] This family includes the mammalian hormones follicle-stimulating hormone (FSH) and luteinizing hormone (LH), the placental/chorionic gonadotropins, human chorionic gonadotropin (hCG) and equine chorionic gonadotropin (eCG), [3] as well as at least two forms of fish ...
Prediction of birth date of the pending litter can be very accurate if ovulation date is known. Puppies deliver with a day or two of 9 weeks gestation in most cases. It is not possible to determine pregnancy using progesterone tests once a breeding has taken place, however.