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Pig farming

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Pig farming, also known as hog or swine production, is a specialized branch of animal husbandry.

JEFO-Pigs
JEFO-Pigs

This practice involves the raising and breeding of domestic pigs as livestock. People farm these animals primarily for food products like pork, bacon, ham, and gammon. Beyond meat, pigs provide skins for clothing and fat for cosmetics or medical use. The industry is massive, with over one billion pigs butchered globally each year. In the United States alone, the annual number reaches approximately 100 million.

Suckling pigs
Suckling pigs

Farmers use several different styles to manage their livestock. Intensive commercial units are the most popular method today. These facilities are often highly cost-efficient and use climate-controlled buildings to house thousands of pigs. Other methods include commercial free-range enterprises or extensive farming. In extensive systems, pigs might wander through a village or stay in a simple outdoor pen. Historically, pigs were kept in much smaller numbers near a person's home. They were valued for their ability to convert household food waste into meat and manure.

Understanding the specific terminology of pig farming helps clarify the different stages of life. A young, unweaned pig is often called a piglet or a shoat. A piglet that is currently nursing from its mother is known as a sucker. Once it is separated from the sow, the mother, it becomes a weaner. Pigs are also categorized by their gender and age. A male pig of breeding age is a boar, while a male castrated before puberty is a barrow. Females are called gilts if they have not yet had their first litter.

NMA.0063325 Interiör från svinhus, Bjärka-Säby, Östergötland
NMA.0063325 Interiör från svinhus, Bjärka-Säby, Östergötland

Global trade plays a massive role in how pigs are moved around the world. China is a central player in this international market. The country consumes about 50 percent of the world's pork production. In 2021, China's pork consumption reached 57 million tons. Because they consume so much, China is a net importer of pigs. To keep prices stable, the Chinese government maintains a strategic pork reserve. They release pork into the market when prices are too high. They also buy pigs when prices are too low to protect farmers' profits.

Major exporters include the United States, the European Union, and Canada. Canada provides a great example of this large-scale trade. In 2008, Canada exported more than half of its 22.8 million pigs. These exports went to 143 different countries. Economically, pigs have a lower feed conversion ratio than cattle. This means it costs less feed to produce a kilogram of pork than beef. Because of this efficiency, pork is often more affordable for consumers at the retail level.

How handlers interact with pigs significantly impacts animal welfare and production. Pigs are curious animals that respond well to slow, deliberate movements and verbal interaction. Positive handling, such as letting a pig approach to smell a hand, reduces stress. Conversely, negative interactions can cause fear and high cortisol levels, which is a stress hormone. Examples of negative handling include using electric goads or making fast, sudden movements. High stress can lead to immunosuppression, making pigs more likely to get sick. It can also lead to slower growth rates in the animals.

Modern farming faces challenges regarding animal health and environmental impact. In confinement systems, sows can produce about 23.5 piglets per year. However, death rates for sows in the U.S. rose from 5.8 percent to 10.2 percent between 2013 and 2016. Some of this is linked to breeding practices. In the late 1980s, pigs were bred to gain weight very quickly. Today, they are often bred to have less backfat, which can cause health issues like prolapse.

NRCSAR83008 - Arkansas (279)(NRCS Photo Gallery)
NRCSAR83008 - Arkansas (279)(NRCS Photo Gallery)

Large-scale operations, known as Concentrated Animal Feed Operations or CAFOs, also affect the surrounding environment. Waste from these farms can contain pathogens, bacteria, and heavy metals. If not managed, this waste can leach into groundwater or cause harmful algal blooms in water bodies. People living near these farms may experience symptoms like headaches, nausea, or respiratory issues. These health problems are often caused by fumes or air particles from the waste.

GHS-pictogram-skull
GHS-pictogram-skull

Scientists continue to research ways to improve both animal health and environmental safety.

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🖼️ Images & Media (6)
File:JEFO-Pigs.jpg
JEFO-Pigs.jpg
File:Suckling pigs.JPG
Suckling pigs.JPG
File:NMA.0063325 Interiör från svinhus, Bjärka-Säby, Östergötland.jpg
NMA.0063325 Interiör från svinhus,...
File:NRCSAR83008 - Arkansas (279)(NRCS Photo Gallery).jpg
NRCSAR83008 - Arkansas (279)(NRCS Photo...
File:Pig farm Vampula 9.jpg
Pig farm Vampula 9.jpg
File:GHS-pictogram-skull.svg
GHS-pictogram-skull.svg
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