How do pigs have sex?

Answer

Well pigs do not have random sex as humans in fact very few mammals have sex unless they are in estrus. Sows (female pig) come into estrus every 18-21 days unless pregnant. As the sow enters estrus she enters what is known as standing heat, this is where she will stand for the boar to mount her. The boar's penis is unlike most mammals as it is a corkscrew. The boar inserts the penis in the vulva and goes up about 2 foot (yes the boar's penis is 2 foot long) and screws into cervix and locks into place. (Just a little side point this is where the slang word "screw" comes from). The sex act will take around 15 minutes and the boar produces around 200-250 ml or cc of semen. The boar then produces a jelly like substance to plug the cervix and keep the semen in the uterus. He then dismounts and usually goes finds a mudhole if available and relaxes and is very satisfied with himself. They may breed two or three times during estrus. Some sows are very aggressive and grunt and run the fence looking for a boar. If all was successful they will have pigs 114 days later and hopefully have 9-15 good lively piglets that weigh 1-2 pounds.

Today 90 percent of the hogs are artificially inseminated, which means man inseminates the sow. To collect the boar man has the boar mount a dummy sow (a piece of pipe, bale of straw, ect) and the boar extends the penis and the human collector grabs the penis in the corkscrew part and collects the semen in a cup (like the insulated cup you get at the local gas station). The jelly portion is separated by cheesecloth and toss away, although some artist use it to make art scuptures out of. The semen is then extended with an extender (sugars and water to feed the semen) and made into 15-20 doses of semen so that 7 or more sows can be bred with one collection. A rod that is like the boar penis is inserted into the sow and 100cc of extended semen inserted into the sow 12 hours apart during stand heat. This is very successful requires less boars and makes swine production much more efficient.