24 hours
Most often, pregnancy occurs when the egg is fertilized within 24 hours from its release from the ovary. Sperm are thought to live inside a woman's body for 24 to 48 hours, although some have been k nown to fertilize eggs when they are as much as seven days old. 1 Sperm travels about 1/8 inch per minute. 2  Sounds pretty slow until you realize Sperm is about 1/600 inch long. 3  If you scale that up to human size that's about 4-5 miles / hour -- slow jogging speed. 4  The penetration of the penis and location of the egg in the fallopian tubes is only two factors that will affect time. When the fertilized egg attaches itself to the uterine wall and begins to produce hCG it is called implantation. This typically occurs between 6 and 8 days after ovulation. The egg is fertilized in the outer part of the fallopian tube, generally within 12 hours of ovulation. After it is fertilized, the egg travels down the fallopian tube. The fertilized egg grows as it travels. It doubles, the grows to four cells and then to eight cells as it enters the uterus The Sperm's Long Journey. A man may ejaculate 40 million to150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours. Only a few hundred will even come close to the egg, because of the many natural barriers that exist in a woman's body. Fertilization: Sperm Penetrates Egg. It takes about 24 hours for a sperm cell to fertilize an egg. When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter. 3 weeks (21 days) to 4 weeks is when you can be sure that the hen's eggs are fertilized by the current male that she is breeding with. But, I've always had the idea that if a male is repeatedly breeding a female and the male is fairly young but mature, his sperm will flush out the weaker sperm of the other male.  If the sperm has a Y chromosome, your baby will be a boy. If it has an X chromosome, the baby will be a girl. Implantation: Moving to the Uterus. The egg stays in the fallopian tube for about 3 to 4 days. But within 24 hours of being fertilized, it starts dividing fast into many cells. It keeps dividing as it moves slowly through the fallopian tube to the uterus. Its next job is to attach to the lining of uterus Hens lay approximately 5 eggs per 7 day week. Sperm from a rooster is stored in the hen's oviduct for up to 10 days, so after just a single successful mating many fertilized e … ggs can be laid. Depending on when the hen's last egg was laid, the next egg laid after the hen was mated will most likely be fertile. Here's how it works: Fertilization happens in one of the fallopian tubes, which carries an egg from an ovary to the uterus. It can take up to seven days after intercourse for sperm and egg to join and form a fertilized egg. Usually, it's because the sperm gets into the fallopian tube before the egg is released. Once there, the sperm wait for an egg to arrive. After fertilization, it can take 5-10 days for the fertilized egg to begin to attach itself to the lining of the uterus. Pregnancy begins when this happens. It is true that conception is the same moment as fertilization. However, sperm will attempt to fertilize an egg at any opportunity they get Roughly 9 days. That's why the earliest a home pregnancy test can be positive is 10 days after conception. As until the fertilized egg implants into the wall of the uterus, there won't be any of the pregnancy hormone hCG in your system. Remember that sperm can live for at least three days. So the day you have sex is not necessarily the day you conceive. So depending on when you ovulate you can conceive 0-3 days after sex.  An egg can be fertilized for a maximum of 24 hours after it is released from the ovary, according to pregnancy and childbirth expert Sheila Kitzinger. Therefore, a woman needs to understand how her menstrual cycle works and make an educated guess about when she will release an egg, also known as ovulating. With a maximum of 24 hours for fertilization once the egg is released from the ovary, it is best to have sexual intercourse in the days leading up to ovulation and the day of ovulation in order to meet this time frame. 1 I would say at least a couple of hours, but it could take up to three days. 2  Depending you your body and where the egg is in the cycle. 3  The sperm that will be able to fertilize the egg will leave the cervix, at the most, 30 minutes. 4  It does not take 3 days for the sperm to get to the fallopian tubes to ovulation. 1 Sperm travels about 1/8 inch per minute. 2  Sounds pretty slow until you realize Sperm is about 1/600 inch long. 3  If you scale that up to human size that's about 4-5 miles / hour -- slow jogging speed. 4  The penetration of the penis and location of the egg in the fallopian tubes is only two factors that will affect time.
http://www.answers.com/Q/How_long_does_it_take_sperm_to_reach_an_egg http://www.amazingpregnancy.com/pregnancy-articles/372-html.html http://www.webmd.com/baby/ss/slideshow-conception http://www.backyardchickens.com/t/458346/how-long-does-it-take-for-a-hens-eggs-to-become-fertilized http://www.webmd.com/baby/guide/understanding-conception http://www.answers.com/Q/How_long_does_it_take_for_the_egg_to_be_fertilized_after_conception http://www.babycenter.com/400_how-long-does-it-take-for-fertilized-egg-to-become-implanted_11667442_849.bc http://www.ehow.com/info_10021874_long-after-egg-released-can-fertilized.html http://www.answers.com/Q/How_long_does_it_take_sperm_to_reach_an_egg
how long does it take for an egg to be fertilized