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Cattle

life science Maturity 7-9 Vital Level 3 Next article →

Cattle, known scientifically as *Bos taurus*, are large, domesticated mammals belonging to the bovid family.

Stier Charolais Linnenbach
Stier Charolais Linnenbach

These animals are classified as artiodactyls, which means they are even-toed ungulates that walk on two digits. They are highly significant to human civilization as livestock. Humans raise them for meat, dairy products, and leather. Some are also used as draft animals to pull heavy farm implements or carts.

Because of their utility, there are over 940 million cattle in the world as of 2022.

The biology of cattle is defined by a highly specialized digestive system. They are ruminants, which allows them to process plant material like grass. This grass is rich in cellulose, a tough carbohydrate polymer that most animals cannot digest.

Kibegwa 2023 rumen microbiome
Kibegwa 2023 rumen microbiome

Cattle achieve this through a symbiotic relationship with a rumen microbiome. This microbiome consists of bacteria, fungi, and protozoa that possess cellulases, which are enzymes that split cellulose into sugars. The stomach is divided into four distinct compartments: the rumen, the reticulum, the omasum, and the abomasum. The rumen is the largest part and stores food. The reticulum is the smallest and is often called the "honeycomb." The omasum absorbs water and nutrients, while the abomasum functions similarly to a human stomach.

To digest food effectively, cattle use a process called rumination, or "chewing the cud."

Kibegwa 2023 rumen microbiome
Kibegwa 2023 rumen microbiome

While grazing, cattle swallow food quickly without much chewing. This food enters the rumen for storage. Later, the animal regurgitates a mouthful of food back to the mouth. The molars then grind the coarse vegetation into much smaller particles. Once the food is finely ground, it is swallowed again to be further processed by the microorganisms in the stomach. This cycle allows them to extract maximum nutrition from tough plants.

Cattle are divided into several major types based on their ancestry and geography.

Cattle phylogeny and migrations
Cattle phylogeny and migrations

Taurine cattle are widely distributed across Europe, temperate Asia, the Americas, and Australia. Zebus are primarily found in India and tropical regions of Asia, America, and Australia. Sanga cattle are mostly found in sub-Saharan Africa. These groups are further divided into more than 1,000 recognized breeds. Physical traits vary greatly between these breeds. For instance, the Chianina is one of the largest breeds. A mature Chianina bull can reach 1,900 kg in weight and stand very tall at the shoulder.

The history of cattle domestication involves two distinct major events.

Cattle phylogeny and migrations
Cattle phylogeny and migrations

About 10,500 years ago, taurine cattle were domesticated from wild aurochs in central Anatolia, the Levant, and Western Iran. A separate domestication event occurred in the Indian subcontinent, which led to the development of the zebu. These historical paths created the diverse livestock we see today. Cattle were also among the first animals to have a fully-mapped genome. This scientific milestone allows researchers to study their genetic makeup in great detail.

Cattle possess complex cognitive abilities and unique sensory adaptations.

Lecorps 2018 calf sociability
Lecorps 2018 calf sociability

As prey animals, they have eyes on the sides of their heads. This provides a wide field of view of 330 degrees, though it limits their binocular vision. They are dichromatic, meaning they see colors differently than humans. Cattle also use olfaction, or smell, to navigate their social lives. They can detect alarm chemicals in the urine of other stressed animals. Furthermore, they show individual personality traits, ranging from shyness to sociability. One documented case even showed a cow named Veronika using a deck brush as a tool to scratch herself.

Socially, cattle live within a dominance hierarchy.

Oman bullfighting (2)
Oman bullfighting (2)

This hierarchy is often maintained through non-aggressive behaviors. For example, cattle may engage in mock fights to test strength without causing injury. Dominance status is typically determined by age and sex, with older animals and males generally holding higher ranks. Even their communication is sophisticated. They use various vocalizations to convey information about age, sex, and reproductive status. Understanding these social structures and biological needs is essential for modern cattle farming and conservation.

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🖼️ Images & Media (16)
File:Kibegwa 2023 rumen microbiome.png
Kibegwa 2023 rumen microbiome.png
File:Cow giving birth, in Laos (step by step).jpg
Cow giving birth, in Laos (step by step).jpg
File:Lecorps 2018 calf sociability.jpg
Lecorps 2018 calf sociability.jpg
File:Oman_bullfighting_(2).jpg
Oman_bullfighting_(2).jpg
File:Stier_Charolais_Linnenbach.JPG
Stier_Charolais_Linnenbach.JPG
File:CowPosture 20150612.jpg
CowPosture 20150612.jpg
File:Talenti 2022 cattle genetics.png
Talenti 2022 cattle genetics.png
File:Cattle phylogeny and migrations.svg
Cattle phylogeny and migrations.svg
File:Zubron2.jpg
Zubron2.jpg
File:Livestock market in Mali.jpg
Livestock market in Mali.jpg
File:Concentrated Animal Feeding Operations diagram.svg
Concentrated Animal Feeding Operations diagram.svg
File:Cattle-livestock-count-heads.png
Cattle-livestock-count-heads.png

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