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In swine natural weaning is a slow process that causes the least amount of discomfort and strange behaviors in feeding. When it comes to artifical weaning, especially at very young ages, can stress the piglet out psychologically which can lead to periods of fasting, and reduced intakes of food and water. The design of the feeders and water dispensers must be easily accessible for the pig, make sure it is kept clean, and using natural sucking functions so that the pig can properly ingest the water. Some can have very restricted diets such as the amount of fiber they consume.
Sources:
https://hilo.hawaii.edu/campuscenter/hohonu/volumes/documents/IngestiveBehaviorinSwineKuileiKramer.pdf
https://www.minipiginfo.com/common-myths-about-pigs.html

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Right before giving birth, sows start to show some maternal behaviors such as building nests, by pawing and gathering straw, or starting to become isolated, and farrowing.
Sources:
https://www.sciencedirect.com/science/article/pii/S0018506X07000682
http://porkgateway.org/resource/natural-farrowing-behavior-of-the-sow-and-piglets/

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Within the first day of being born, piglets establish a teat order and most likely will return to the same teat during the entire lactation. Piglets will often compete for the most productive teat when first born.
Source:  https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/neonatal-behaviour

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Sexual Behavior in Sows
 The sow will immediately go to the boar, sniff the anal region, and remain very close to him until she is mounted.
https://youtu.be/3tOWsEiHDFk?t=42 

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Sexual Behavior in Sows
 The sow will immediately go to the boar, sniff the anal region, and remain very close to him until she is mounted.
https://youtu.be/3tOWsEiHDFk?t=42 

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https://animalstudiesrepository.org/cgi/viewcontent.cgi?article=1001&context=mammal

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Sexual Behavior in Boars
Boars will generally make a series of grunts or moving their jaws producing saliva,
and they stand closely to the female.

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Sexual Behavior in Boars
Boars will generally make a series of grunts or moving their jaws producing saliva,
and they stand closely to the female.

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https://sites.oxy.edu/clint/physio/article/sexualbehaviorofmalepigs.pdf

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COMMUNICATION AND PIGSTACTILE- they use this when it comes to teat order. Within the first couple of hours to about two weeks after farrowing, the piglets can recognize their positions on the udder. Piglets also massage and suckle their mother’s teats after milk flow finishes as a way of letting the sow know their nutritional status. AUDITORY- pigs tend to squeal but it can mean many things such as when they feel fear or to alert others. VISUAL- piglets are sensitive to the cold and have a behavioral feature of huddling with one piglet so that the other will begin to huddle as well, creating warmth for everyone. CHEMICAL/SMELL- During courtship the male sniffs the female to make sure she is ready to mate. SOURCE: http://www.animalbehaviour.net/pigs/

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COMMUNICATION AND PIGSTACTILE- they use this when it comes to teat order. Within the first couple of hours to about two weeks after farrowing, the piglets can recognize their positions on the udder. Piglets also massage and suckle their mother’s teats after milk flow finishes as a way of letting the sow know their nutritional status. AUDITORY- pigs tend to squeal but it can mean many things such as when they feel fear or to alert others. VISUAL- piglets are sensitive to the cold and have a behavioral feature of huddling with one piglet so that the other will begin to huddle as well, creating warmth for everyone. CHEMICAL/SMELL- During courtship the male sniffs the female to make sure she is ready to mate. SOURCE: http://www.animalbehaviour.net/pigs/

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Piggy Agnostic Behavior        In this photo below, these two pigs are showing agnostic behaviors by fighting. One of the pigs are biting the other and trying to push its weight onto the other. 

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Piggy Agnostic Behavior        In this photo below, these two pigs are showing agnostic behaviors by fighting. One of the pigs are biting the other and trying to push its weight onto the other. 

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Source:
https://twitter.com/thepigsite/status/943046285199888384

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A study was performed to test the dominance hierarchy in groups of swine by keeping direct observation within a group of 44 pigs(female and male) for about 8-30 weeks. The ending results concluded that the group of pigs had a linear type of hierarchy.
Source:
https://www.sciencedirect.com/science/article/pii/S0003347273800740

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1.       Name of the disorder

Tail Biting

2.       Signs of the disorder

Signs: Nipping at tails of other pigs Causes:  Overcrowding, boredom, floors without bedding, low-salt diets, and low-iron in the soil seems to lead to tail biting

3.  Possible treatments

Changes in their environment, different food, or separating the population so they aren’t so overcrowded.
Sources:
https://www.merckvetmanual.com/behavior/normal-social-behavior-and-behavioral-problems-of-domestic-animals/behavioral-problems-of-swine

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https://www.sciencedirect.com/science/article/pii/0003347279900332
Pigs were trained to eat food by pressing a panel with their snouts. Pairs of animals were tested together with a panel largely separated from the feeders and response rates were tested in relation to social dominance.

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Genetic relationships among pig behavior 

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Genetic relationships among pig behavior 

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the table represents heritability among pigs and how difficult it was to behave correctly around other pigs female and male
Table from:  Genetic analysis of behavior traits in swine production$ G.A. Rohrer n , T. Brown-Brandl, L.A. Rempel, J.F. Schneider, J. Holl 1

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https://www.researchgate.net/publication/286719912_Behaviour_Genetics_of_Pigs
In this article, it explains that "The behavior of a sow after farrowing appeared as a consequence of natural selection for protection of piglets from predators in the wild boar population", which affects the survival of piglets and the longevity of the pig in breeding. Also molecular mechanisms the ones that determine patterns of their behavior, allows the understanding of several behavioral problems such as aggressiveness and it also aids in the improvement of the well being of piglets.

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When choosing a species, I wanted to pick one that I feel that I didn’t know much about so that during my time informing you about this species, I’ll be gaining knowledge as well. I decided to choose a pig because although I’ve always been interested in pigs and in owning one, I don’t know much about them and their certain behaviors so I’m anxious to learn how they have evolved over time and what behaviors have stayed the same. I’m also interested in their mating rituals and if there is any courtship involved. I hope by the end of this term I have helped you gain more knowledge on this species.