How many meals does a pig eat a day? What do you eat for every meal? Do you want your food cooked? How do you mix your own feed? Can the bran be washed? Do you want to cook feed and bran?

The most representative glorious image of pig is Pig Bajie, who was portrayed as an innocent, respectful, honest and generous monk hero in The Journey to the West. At ordinary times, I am open-minded, my youth is gone, but I am generous and full of heroic qualities. But zoologists quit, thinking it was Wu Cheng'en's fatal failure. Because pigs don't have two nipples like people, but two rows.

The most famous strategist in history is Zhuge Liang, who is also a pig. The so-called pigs are connected, and the sound is the same as the word. Mr. Zhuge was born in August of the lunar calendar, in the autumn season, suggesting the fate of the golden pig. It is said that when Zhuge Liang was young, he often held a fan in his hand, and there was a poem "Fan is cool, school is auspicious, and the Mid-Autumn Festival in August is the best". It was with this jingle and the life of the golden pig that Zhuge Liang won the first place in the imperial examination in one fell swoop, and was called "exploring flowers". Therefore, the attributes of pigs have soared to the point where they are as beautiful as "Three Sheep Open Thailand", which is called "golden pig exploring flowers".

Journey to the West is an anthropomorphic pig, and Zhuge Liang is an anthropomorphic pig. People have pig complex, and pigs also have people's likes and dislikes. For thousands of years, they have shown the emotional poems of locked people and pigs.

The toilets in the northern rural areas are connected to the pigsty in Otawa, where people pull on it and pigs eat at the bottom. It is from this that ecologists discovered the food chain between animals and people. Unfortunately, there are few such "green" pigs now, and they are replaced by compound feed.

Yong Zhengdi in Qing Dynasty. Called VIII, the usurper of power, "Ajina" means Manchu pig. Since then, pigs have also been branded politically. The winner is "Rowen", and the loser is "pigs and dogs are inferior".

China used to have a decent individual industry, which wandered widely in rural market towns all over the country. It is "knocking on the pig". Break the boar's desire for flowers and plants, let them concentrate on fattening and fattening, and implement the monopoly of prenatal and postnatal care-professional breeding station. The biggest advantage of avoiding pig hybridization is to create a prosperous history of eunuchs. From "knocking pigs" to "eunuchs".

"I have never eaten pork, and I have never seen a pig run", which inspires people's logical thinking of philosophical analogy.

"Pigs eat my shit and I eat my shit" has become a jingle in people's entertainment. Say it five times without making mistakes, and test people's mobility.

"One horizontal, one vertical and one turn, four little pigs come to eat Zhaer"? Type the hieroglyphics of Chinese characters-traditional horses. Pigs are also integrated into education.

A pig with an onion in its nose-making a fool of itself. It shows people's disregard for headstrong.

"Pig brain" has almost become synonymous with modern stupidity.

"Pig Bajie looks in the mirror-inside and outside are not people". It has also become a common life etiquette.

"The second aunt of Dragon and Pig is". It also embodies different aesthetic concepts.

On the Princess. It has become the most popular poker category, in which the pig has become the "queen of spades".

"Hug, hug, hug" is a unified pig cavity in China. Describing a mahjong master, he also said: hands are like baskets, and there is a lot of money. In fact, Pig Bajie's weapon is a shovel, and hug-floor-hug is the voice of pig greed.

"elbow pork", "pork belly", "tenderloin" and "mouth strips" are already delicious without the need to name them pigs. But "bag meat" and "water-injected meat" are also self-evident, and they can't escape the relationship between pigs.

So how did pigs enter the human 12 zodiac?

As the Tang Priest went to the Western Heaven to learn Buddhist scriptures, he also touched the Jade Emperor. In order to inherit the spirit of heaven and earth, the three disciples of Tang Priest will be included in human beings by default. Friar Sand was a monster in his last life, so it was inconvenient to arrange for him to associate with animals, so he only accepted three people: Monkey Sun, Pig Bajie and Bai.

Tang Priest gave Pig Bajie a dharma name-Wuneng. It means to be attached to the world and try to understand people's energy, ability and talent. What he didn't expect was that people learned more from pigs.

Once upon a time, there were two little pigs who lived carefree all day. They are in love. Every day when the owner brings it to eat, the boar always lets the sow eat first, and then goes up to eat the sow's leftovers when she is full. Every night, the boar should always be on guard against the sows, because he is afraid that his master will pull them out and kill them while they are asleep. As the days passed, sows became fatter and boars became thinner.

One day, the boar suddenly heard that the owner was discussing with the butcher to kill and sell the growing sow. The wild boar was very sad. So from that day on, the boar's temperament changed greatly. Whenever the owner brings food, the wild boar always grabs it and eats it completely. After eating well every day, he lay down to sleep and told the sow to keep watch for her now. If he finds out that she doesn't keep watch, he will never pay attention to her again. Gradually. As the days passed, the sow felt that the boar didn't care about her more and more. The sow was disappointed, but the boar was still happy, as if nothing had happened.

A month passed quickly, and the owner took the butcher to the pigsty. He found that a month ago, the fat sow was so thin that there was not much meat left, while the boar was so shiny. At this time, the boar ran desperately, trying to attract the owner's attention and show that he was a healthy pig. Finally, the butcher dragged the boar away. At the moment he dragged it out of the pigsty, the boar smiled and said to the sow, "Don't eat so much in the future!" " "The sow was heartbroken and rushed out desperately, but the circle door was closed by the owner. Through the fence, the sow looked at the tearful boar.

That night, the sow watched the host family happily eating pork. The sow lies sadly in the place where the boar sleeps every day. Suddenly, she found a line on the wall: "If love can't be expressed in words, I am willing to prove it with my life"! Sows are heartbroken when they see this line.

2.60 years ago, there was a famine, and the production team robbed the only two "pigs" by the members. Fortunately, my sister caught one. When I got home, those pigs were rickety and skinny. I mow the grass and feed it to the pigs after school every day. Slowly, the pig recovered, and when it reached 1 10 kilograms, it was slaughtered.

The Year of the Pig tells a story about a pig.

Boars always watch over sows at night because he is afraid that their owners will pull them out and kill them when they are asleep. As the days passed, sows became fatter and boars became thinner.

One day, the boar suddenly heard that the owner was discussing with the butcher to kill and sell the growing sow. The boar was extremely sad, so from that day on, the boar's temperament changed greatly. Whenever the wild boar sent by his master wants to eat, he always grabs it and eats it completely. After eating well every day, he lay down to sleep and told the sow that it was her turn to keep watch. If he finds out that she is not on guard, he will never talk to her again.

As the days passed, the sow felt that the boar didn't care about her more and more. The sow was disappointed, but the boar was still happy, as if nothing had happened. A month passed quickly, and the owner took the butcher to the pigsty. He found that a month ago, there was not much meat left on the fat and strong sow, but the boar was shiny. At this time, the boar ran desperately to attract the owner's attention and show that he was a healthy pig. Finally, the butcher took the boar away ... At the moment he dragged it out of the pigsty, the boar smiled and said to the sow, "Don't eat so much in the future." The sow was heartbroken and rushed out desperately, but the enclosure door had been closed by the owner. ....

The sow put the fence aside and looked at the wild boar with tears in her eyes. That night, the sow looked at her master's house and ate pork happily. The sow lay sadly where the boar had fallen asleep, and suddenly found a line on the wall: "If love can't be expressed in words, I am willing to prove it with my life!" " The sow was heartbroken when she saw this line, and human beings were moved by this sad story.

Later, in order to commemorate this love, girls began to lose weight.

Pig species

You Zhu is called "Big Yorkshire Pig". Originally from Britain, it is specially called "British Large White Pig". After being introduced into the Soviet Union, it became a "Soviet white pig" after long-term domestication and cultivation. The latter is stronger than the former, with strong limbs and suitable for grazing. It was cultivated in England in the18th century.

Yorkshire pig is a famous pig. Originated in Yorkshire, England (an old county in the northeast of England, 1974 was divided into North Yorkshire, South Yorkshire and West Yorkshire), which was made by crossing local pigs with China pigs. The whole body is white, and the ears stand up forward. There are three kinds, big, medium and small, which are called "big white pig", "medium white pig" and "small white pig" respectively. Large white pig belongs to cured meat type and is the most widely distributed pig breed in the world. When you grow up, adult boars weigh 300 to 500 Jin and sows 200 to 350 Jin. Strong reproductive ability, 10 to 12 litters per fetus. Xiaobai pig is precocious and fattening, belonging to obesity type. The size of Chinese white pig is between the two and belongs to meat type. There are many large white pigs in China.

Landrace is the general name of China Landrace. The famous pickled pig breed. Originated in Denmark. It is a cross between a local pig and a large white pig. All white. The body drive is long and streamlined. Long and narrow head, big ears hanging forward, straight back, developed hindquarters, plump thighs and high limbs. Fast growth rate and high feed utilization rate. Thin skin and thin flesh. Eleven to twelve nests per nest. Adult boars weigh 400 to 500 kilograms, and sows weigh about 300 kilograms. Need better feeding and management conditions. All over the world.

Hampton pig is a famous pig breed. /kloc-At the beginning of the 9th century, it was exported to the United States from Hampshire, England, and crossbred in Kentucky. The coat is black, and the shoulder and neck joints and forelimbs are white. The nose is slightly long and straight, upright. The body is long and muscular Adult boars weigh 3 15 to 4 10 kg, and sows weigh 250 to 340 kg. Early maturity and medium fecundity, with an average of 8.66 litters per litter. Strong motherhood. Carcass quality is high, and the proportion of lean meat is large.

Bo breed pig is a famous pig breed. Native to the United States. It is a hybrid of China pig, Russian pig and British pig. Originally a fat type, it has now been cultivated into a meat type. The whole body is black and has the characteristics of six whites. The nose is straight and the ears are drooping. Large, adult boars weigh 390 to 450 kilograms, and sows weigh 300 to 400 kilograms. Early maturity and easy fattening, good carcass quality; However, the fecundity is weak, about 8 per litter.

Pig house, pigpen, pigpen, English hogpen, that is, a house for raising pigs, especially a building that can raise some pigs. A typical pigsty should be able to avoid supercooling and overheating, with good ventilation and clean padding and feed. Simple pigsty is called pigsty or pigsty. Mobile piggery can be prefabricated or built on site, with or without floor, and the door with single wall made of coarse sack cloth can be moved to a clean place every season. Fenced piggery is mainly used to raise more than twelve sows, generally with cement floor, smooth walls and insulation devices. This kind of pigsty can be equipped with air conditioner or ventilation device, and heated by heater, underground hot water pipe or heating lamp. Fences can be used to limit the activities of farrowing sows, and they can only stand or lie down, and can't walk, so as to avoid accidentally injuring piglets.

Domestic pig breed

Appearance characteristics of name and type distribution

Baltz Will 1 Pig and Baltz Will 2 Pig (for meat) were bred in the United States. Baltz Weil 1 pig is black, and No.2 pig is red, which is used to eat meat.

Berkshire pigs (for meat) are of medium size in Britain, Japan, Australia, New Zealand and South America, and most of them are black. They are cultivated in different places for fresh meat or cured meat.

Chester White Pig (Fat Pig) is bred in Chester County, Pennsylvania. It is large, white, light pink, mild in sex and has many sows.

Duroc pig or Duroc Jersey pig (used for fattening) is of medium length in North and South America, with a body length of 1/2 Black Jersey pig 1/2 Duroc.

American breed humpback pig (for meat) has medium weight, long body, lively black color and is suitable for grazing.

Hereford pig (for fat) was bred in the United States about 1900. It is of medium build and has reddish to dark red fat.

Nordic pigs (meat) Northern Europe, Central Europe and the United States are medium-sized and have many white varieties, which are used for curing meat.

Maryland 1 Pig (for meat) was bred in the United States in 194 1 year. It is of medium size, about 60% Nordic pig and 40% Berkshire pig, with black spots.

Minnesota 1, No.2 and No.3 pigs bred in the United States are all used for meat.

Montana No.1 pig (meat) is a hybrid of Nordic pig and Hampton pig bred in the United States in 1930s, with slightly arched back and flat cheeks.

Palus pig (for meat) was bred in the United States in 194 1 year, with medium weight, 2/3 Nordic pig and13 Chester white pig.

Bozhong pig (for meat) breeds in the United States in black, but its legs, nose and tail are white. It is a cross between Russian pig, German pig and China pig.

Bozhonghua pig (pork pig) is bred in the United States as a white pig, but its legs are black or spotted.

The United States, Britain, New Zealand, Australia and Canada are large in size and different in color, and are used for cross breeding and curing meat.

Yorkshire pig (for meat)

Living habits of pigs

First, feeding behavior.

The eating behavior of pigs includes eating and drinking, and has various age characteristics.

Pigs are born with the genetic characteristics of arching soil, and arching soil for food is a remarkable feature of pig feeding behavior. The pig's nose is a highly developed organ, and the sense of smell plays a decisive role in digging the soil to find food. Although pigs have a well-balanced diet in modern pig houses, they also show the characteristics of arching for food. Every time they feed, they try to occupy a favorable position in the trough, sometimes stepping on food with their forelimbs. If the trough is easy to get close to, some pigs will even get into the trough and stand in a corner of the trough, just like a wild boar arching for food, and move along the trough with a kiss, stirring up the food and throwing it all over the floor.

Pigs are selective in their intake of food, and especially like sweets. The study found that non-breastfed newborn piglets like sweets. Compared with powder, pigs like to eat granular substances; Compared with wet feed, pigs like to eat wet feed and spend less time.

The feed intake of pigs is competitive, and pigs fed in groups eat more, eat faster and gain more weight than pigs fed alone. Pigs eat 6-8 times during the day, 1-3 times more than at night. The duration of each feeding is 10-20 minutes, and it is less than 10 minutes when feeding is restricted. They eat casually, not only for a long time, but also show the hobbies and personality of every pig. The sucking times of piglets vary with age, ranging from 15 times to 25 times, accounting for 10% ~ 20% of the total day and night time. The feed intake and frequency of big pigs increase with the increase of body weight.

In most cases, drinking water and feeding are done at the same time. The water consumption of pigs is quite large. Piglets need to drink water after birth, mainly from the water in breast milk. When piglets eat feed, the water consumption is about twice that of dry feed, that is, the ratio of water to feed is 3: 1. In addition to feed ingredients, the water consumption of adult pigs depends largely on the environmental temperature. Pigs who eat mixed feed drink 9 ~ 10 times every day and night, and eat wet feed 2 ~ 3 times on average. Pigs who eat dry feed need to drink water immediately after each feeding. Pigs who eat freely usually alternate between eating and drinking until they are satisfied, while pigs who restrict eating drink water after eating feed. Piglets can learn to use automatic drinking fountains before they are six months old.

Second, excretion behavior.

Pigs don't defecate where they eat and sleep, which is the nature left by their ancestors, because wild boars don't shit and pee near their nests to avoid being discovered by enemy animals.

Under good management conditions, pigs are the cleanest animals among domestic animals. Pigs can keep their nests clean and excrete feces and urine in a fixed place far away from the nests. Pigs excrete feces and urine for a certain time and area. Generally, when they lie down after drinking or eating, they will choose dark, wet or dirty corners to excrete feces and urine, which is influenced by neighboring pigs. It is observed that growing pigs do not defecate during the feeding process, and begin to defecate 1 ~ 2 times about 5 minutes after satiety. Most of them defecate first and then urinate, and some of them excrete first and then feed, but most of them urinate first and then defecate. During the feeding interval, pigs usually defecate 2 ~ 3 times at night, with the largest amount of excretion in the morning, and the nighttime excretion time of pigs accounts for the total number of days and nights.

Third, social behavior.

The herd behavior of pigs refers to various interactions between individuals in the herd. Pairing is a prominent social activity. Pigs show more physical contact and keep listening to one side's information transmission.

In the absence of pigsty, pigs can live in their own fixed places, showing the habit of settling down and roaming. Pigs live in groups, but they also have competitive habits, such as bullying the weak, bullying the weak and bullying classmates. The bigger the herd, the more obvious this phenomenon is.

The stable pig herd is a hierarchical community structure based on the principle of dominant sequence. Keep familiar with each other and live in harmony. During the reorganization, the stable community structure changed and fierce fighting broke out until a new community structure was formed.

Pigs have obvious grades and are formed shortly after birth. In the first few hours after birth, piglets will compete for the sow's front nipples, and often the first-born or heavier piglets get the best nipple position. Piglets in the same litter live in groups. When they parted, they were not far from each other. If they are accidentally frightened, they will immediately gather in a pile or run away in groups. When piglets are separated from sows or piglets in the same litter for less than a few minutes, they will be extremely active, scream loudly and excrete feces and urine frequently. Older pigs have similar behaviors when they are separated from their partners.

When the grade of pigs was just formed, aggressive behavior was the most common, and the establishment of grade order was influenced by the breeds that constituted this group. Weight, gender, age, temperament and other factors. Generally speaking, pigs with large weight and strong temperament are dominant, older pigs are dominant over younger pigs, and males are dominant over females and castrated pigs. Piglets and piglets newly added to the original group often rank second. The determination of group dominance sequence among littermates often depends on the weaning weight. Piglets in different nests will start to fight fiercely when they are fed in parallel, and lie in small groups according to different sources. In about 24 ~ 48 hours, an obvious ruling hierarchy can be formed, which is generally a simple linear pattern. This hierarchical relationship is more obvious in older pigs, especially in the case of restricted feeding. The dominant sequence is vertical, with parallel and triangular relations in the middle. Winners are in the forefront, and eating often occupies a favorable feeding position or gives priority to feeding. In the pig group with similar overall structure, the pigs with large weight are often in the front row, and the group composed of different breeds is not the individuals with large weight, but the competitive varieties or strains are dominant. After the establishment of the leading sequence, the normal life in the land of peace began. The sharp and loud snorting of the dominant pig and the intimidation formed by the feint of the nose and mouth can replace the fight, and the inferior pig will retreat without a fight.

Fourth, fighting behavior.

Combat behavior includes offensive and defensive, evasive and defensive activities.

Fighting behaviors that can be seen in production practice are generally caused by fighting for feed and turf. In addition to competing for feed and turf, the internal confrontation of the newly merged pigs also played a role in adjusting the social structure of the pigs. When a strange pig enters a group, it becomes the target of the whole group of pigs. This kind of attack is usually serious, ranging from skin injury to death. If two mature and unfamiliar boars are put together, there will be a fierce fight between them. They revolve around each other and smell each other. Sometimes, their forelimbs lie prone on the ground, making a low roar and suddenly biting with their mouths. This struggle may last for an hour. Surrender pigs often turn around and howl and flee from the scene of the fight. Although fighting between two pigs rarely causes casualties, one or both sides will cause huge losses. In the hot summer, the fight between two boars often leads to the death of one or both of them due to extreme heat collapse. The fighting behavior of pigs is mostly influenced by the feeding density. When the density of pigs is too high and the space occupied by each pig is reduced, the number and intensity of fights in the group will increase, which will lead to the increase of feeding aggression of pigs. Reduce feed intake and gain weight. This form of fighting is biting each other's heads, and in a herd of pigs, it is biting each other's tails. The newly gregarious pigs mainly compete for the second place, not for feed. Only when the social elements are formed will there be more struggles for food and territory.

Verb (short for verb) sexual behavior

Sexual behavior includes estrus, courtship and mating behavior. Sows can see certain courtship behaviors during estrus, and both males and sows will show some behaviors before mating.

The sow in estrus is mainly characterized by restlessness, high and low appetite, soft and rhythmic humming, crawling over other sows, or waiting for other sows to crawl over, and frequent urination, especially when boars are present. In the middle of estrus and sexual desire, when the boar approaches, adjust the buttocks to be close to the boar, smell the head, anus and penis foreskin of the boar, cling to the boar, even climb over the boar, and finally stand still. Climb over there with a wild boar. When managers press the back of sows, they immediately produce standing reflex, which is a key behavior of estrus sows.

Once the boar touches the sow, it will chase it, sniff its side ribs and vulva, put its mouth between the sow's legs, suddenly arch the sow's ass upward, foam at the mouth, and often make a continuous, soft and rhythmic throat hum. Some people call this unique cry "courtship song", and boars will urinate rhythmically when they are sexually excited.

Some sows show obvious mate selection psychology and strong aversion to individual boars, and some sows show excessive sexual behavior due to hormonal imbalance, or are not in estrus, and estrus is not obvious.

Because of the relationship between nutrition and exercise, boars often have low sexual desire, or they commit adultery. Keeping boars in groups often leads to stable same-sex behavior, and boars with low social status are often attached to other boars.

Sixth, maternal behavior.

Maternal behavior includes a series of behaviors of sows before and after delivery, such as nesting, breastfeeding and other activities of raising piglets.

When a sow is near delivery, it usually appears in the form of holding grass and nesting in a pig bed. If there is no grass in the fence, it will have to be represented by hoofing the ground. 24 hours before delivery, sows fidget, urinate frequently, grind their teeth, wag their tails, arch the ground, lie down and constantly change their postures. When giving birth, you usually lie on your side. Choose the quietest time to give birth, usually after 4 pm, especially at night. When the first piglet is born, sometimes the sow screams. When the piglet sucks the sow, the sow's limbs will straighten out and open its nipples, so that the newborn piglet can nurse. During the whole delivery process, the sow is in the state of releasing milk from beginning to end, purring constantly, and the nipple of breast milk is also full, even the milk flowing out is easy for the piglets to suck. After the sow gives birth, she lies down in a posture that fully exposes her breasts, forming a heat source and inducing the piglets to lie down next to the sow's breasts. When breastfeeding, sows often take the posture of lying left or right, and do not turn around during breastfeeding. Both mother and offspring can actively cause breastfeeding behavior, and the hum rhythm of sows is low. When a piglet is breastfeeding, sometimes the piglet starts breastfeeding by its sound and constant touching of the sow's breast. When sows are breastfeeding, the cries of sow cubs often cause other mothers in the same room to breastfeed. The suckling process of piglets can be divided into four stages: at the beginning, piglets gather at the breast, each occupying a certain position, rubbing the breast chamber with their noses and sucking, and the piglets lean back, their tails are tightly rolled, and their forelimbs are straight forward. At this time, the sow's snoring reached its peak. Finally, after milking, the pig massaged the breast again and stopped breastfeeding.

Mothers and offspring recognize and communicate with each other through smell, hearing and vision, and the cry of pigs is a kind of contact information. For example, the sounds of nursing sows and piglets can be divided into three types according to the different vocal parts (throat or nasal sounds) and sounds, namely, uh-huh sounds (when the mother is intimate with the baby), screams (when the baby is frightened) and mixed nasal and laryngeal sounds (when the mother is nursing the baby). According to these different sounds, mothers and babies can send messages to each other.

Sows pay great attention to protecting their piglets, and they are very careful when they walk and lie down, so as not to step on or crush the piglets. When the sow is lying down, she chooses a lying position with a triangular mouth beside the fence to continuously discharge the piglets, and slowly lies down beside the fence to prevent the piglets from being crushed to death. Once the pig is crushed, as long as it hears the pig's cry, it immediately stands up and repeats the back pressure action until it is not crushed.

When a sow with a young invades the outside world, it will first give an alarm roar. When the pig hears the sound, it will run away or stay on the ground. Sows will open their mouths and threaten or even attack intruders. Sows that have just given birth will show strong aggressive behavior even if they catch piglets from the breeder. These maternal behaviors are particularly obvious in local pig breeds. The maternal behavior of modern breeds, especially the highly selected lean pig breeds, has weakened.

Seven. Activity and sleep

The behavior of pigs has obvious circadian rhythm, and most of them are active during the day, warm season and summer. There are also activities and eating in the evening, and the time for activities in cold weather is shortened. The day and night activities of pigs vary with age and production characteristics. The average rest time of piglets, breeding pigs, sows and fat pigs is 60% ~ 70%, 70% ~ 85% and 70% ~ 85% respectively. The rest peak is in the middle of the night, and the rest is the least around 8 am.

The sleep time of lactating sows gradually decreases with the increase of lactation days, and the number of walks is from less to more, and the time is from short to long, which is the unique behavior of lactating sows.

There are two kinds of lying-down rest for nursing sows, one is lying down and the other is sleeping. The supine rest posture is mostly lateral, so it is not easy to lie down, and the breathing is light and even. Although the eyes are closed, it is easy to wake up. Sleeping is sleeping on your side, breathing deeply and long, snoring, and often shaking your fur, which makes it difficult to wake up.

Within three days after birth, the piglets almost slept except for sucking and excreting. With the growth of age and physical strength, activities gradually increase and sleep decreases accordingly. However, after eating a lot of supplements at the age of 40, the sleep time has increased again, and generally I sleep quietly after eating enough. Piglets generally imitate sows in their activities and sleep. After birth 10 days, piglets in the same litter began to move in groups, with little individual activity. The main performance of sleep rest is collective sleep.

Eight, inquiry behavior

Inquiry behavior includes exploration activity and experience behavior. Most of the general activities of pigs come from exploration behavior, and most of them are aimed at objects on the ground. Through seeing, hearing, smelling, tasting, gnawing, arching and other senses, they show a well-developed exploratory physical strength, which refers to the exploration and investigation of the environment and the interaction with the environment. Pigs are very curious, and they have approached many familiar things in their recent exploration. Piglets are "curious" about everything in the small environment, and they are also very close to their friends in the same nest. The pig's inquiry behavior is obvious. Piglets can stand about 2 minutes after birth and start looking for sows' nipples. Digging with the nose is the main method of inquiry. Another obvious feature of the pig's inquiry behavior is that it bites all new things in the surrounding environment with its nose arch and mouth. It is the main aspect of pig's exploration behavior to fiddle with the surrounding objects with the nasal process, which lasts longer than group play.

When looking for food, pigs dig, smell, arch, lick and chew first, and then open their mouths to eat when the bait meets the taste. This feeding process is also an inquiry. Similarly, the order in which piglets suck sows' nipples and the accurate identification between mother and child are also established through the exploration of sense of smell and taste.

Pigs can clearly distinguish different areas of sleeping, feeding and excreting in pigsty, which is also formed by distinguishing different smells with their noses.

Nine, abnormal behavior

Abnormal behavior refers to the behavior beyond the normal range, and vice refers to the abnormal behavior that causes harm or economic loss to people and animals, and its generation is mostly related to harmful stimuli in the living environment of animals. For example, sows kept in cages for a long time will persistently and stubbornly gnaw at the iron nipples of automatic drinking fountains. Sows live in boring fences or cages and often munch on the posts in front of the cages. Generally, with the increase of the range of restricted activities, the frequency and intensity of column biting will increase, and aggressive behavior will also increase. Pigs with hyperactive tongues tend to roll up the tip of their tongues and keep stretching in their mouths, and some will also have arch addiction and empty chewing addiction.

Cannibalism is another harmful habit, such as the phenomenon that neurotic sows eat their young after giving birth. Abnormal behavior of biting tail often occurs in crowded captivity or in nutrient-deficient or boring environment, which brings great harm to production.