Depositing semen in vagina

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Reproduction E-Source. It just takes one sperm. The author is professor of animal sciences at Kansas State University, Manhattan. When was the last time you or your A. In field day A.
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Natural mating is out and insemination is in

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Sperm transport in the female reproductive tract | Human Reproduction Update | Oxford Academic

Artificial insemination makes it possible to spread valuable genetic material over large geographic areas, while at the same time reducing the risk of transmitting infectious diseases. During the s, artificial insemination was introduced as a supplement to natural mating in sheep and goats in Norway. Sheep were inseminated with both fresh and frozen semen, while most of the semen used for goats was frozen because of the vast distances between goat herds. However, complicated insemination techniques and high costs limited the use of artificial insemination in sheep and goats. Insemination had to be carried out by authorised personnel and problems with the distribution of fresh semen and low pregnancy rates when using frozen semen were both factors that led to a limited use of artificial insemination.
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Vaginal and uterine pressure response to semen deposition into the vagina and uterus: human study.

Semen was collected on 2 occasions from 11 dogs, pooled, and evaluated for sperm motility, morphology and plasma membrane integrity. Each pool was then divided in 2 parts, diluted with 1 of the 2 extenders, and frozen in 0. In the bitches, plasma progesterone was assayed daily during late proestrus and estrus. For each insemination, x10 6 spermatozoa were used. Ten bitches were inseminated with semen frozen without Equex: In 5 females, semen was deposited transcervically into the uterus with the aid of a fiberoptic endoscope and a urethral catheter, while the remaining 5 bitches were inseminated in the cranial vagina using a Norwegian catheter.
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Suarez, A. At coitus, human sperm are deposited into the anterior vagina, where, to avoid vaginal acid and immune responses, they quickly contact cervical mucus and enter the cervix. Cervical mucus filters out sperm with poor morphology and motility and as such only a minority of ejaculated sperm actually enter the cervix. In the uterus, muscular contractions may enhance passage of sperm through the uterine cavity. A few thousand sperm swim through the uterotubal junctions to reach the Fallopian tubes uterine tubes, oviducts where sperm are stored in a reservoir, or at least maintained in a fertile state, by interacting with endosalpingeal oviductal epithelium.
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