If brother and sister pigs mate, it results in inbreeding, which significantly increase the chance of harmful recessive genes showing , and leads to inbreeding depression, weaker immune systems as well as higher death rates in piglets, birth defects like facial or leg deformities, stunted growth, smaller litters of pigs and lower birth and lower weaning weights.
Some pigs from brother and sister pigs mating and inbreeding may look normal initially, but then problems can escalate with continued inbreeding and it usually results in poor health of the pigs and even reduced farm productivity, which makes inbreeding of pigs a bad practice unless it's guided by expert programs.
Pigs do not mate for life as pigs are polygamous, with both wild and domesticated pigs mating with multiple partners to ensure reproduction occurs.
Although pigs can also form strong social bonds and some captive boars might form long term pair bonds.
And wild pigs breed frequently to maintain their population due to high mortality, and domestic pigs have specific breeding cycles being managed by humans.
But even sows can also have multiple litters with different boars.
Pigs are polygamous in nature and not monogamous, so pigs mate with several partners and not just one pig partner for life.
A pig orgasm lasts on average around 30 minutes, although in some cases a pig's orgasm can last as long as 90 minutes, which makes it the longest mammalian orgasm known.
The extended orgasm of a pig can also involve multiple ejaculations, which contribute to the variation in reported times.
The reason for the pigs orgasm lasting so long is due to a prolonged state of sexual response, and sometimes with secondary ejaculations.
A herd of pigs is called a drove or sounder and sometimes a herd of pigs is simply called a herd of pigs.
Although drove and sounder are also terms that a herd of pigs are called.
For a young herd of pigs, the young herd of pigs is often called a litter or drift and even drove of pigs.
Older pigs are often called a sounder and a group of hogs are often called a team or passel.
Although herd is a general term that is often used for domesticated pigs.
Drove/Drift is often used for younger pigs or for pigs that are being moved.
Sounder is commonly used for a group of wild pigs or swine or older domestic pigs.
Age specific terms when referring to a herd of pigs include.
Singular which is a group of adult male pigs or boars.
Litter which is a group of piglets that are born to the same mother pig.
Passel and Team can refer to a group of hogs, especially when working or moving together.