B. t. indicus
|Bos taurus indicus|
The zebu (
In some regions, such as parts of India, zebu are among the cattle that have significant
Taxonomy and name
Zebu cattle are thought to be derived from the
Believed to be first bred in northwestern South Asia, between 7000 and 6000 BCE, indicine cattle is understood to have been dispersed throughout northwestern South Asia by 4000 BCE, and spread across much of South Asia by 2000 BCE.
Archaeological evidence including depictions on pottery and rocks suggests that it was present in Egypt around 2000 BC and thought to be imported from the Near East or south. It is thought to have first appeared in sub-Saharan Africa after 700 AD and was introduced to the Horn of Africa around 1000.
Phylogenetic analysis revealed that all the zebu Y chromosome haplotype groups are found in three different lineages: Y3A, the most predominant and cosmopolitan lineage; Y3B, only observed in West Africa; and Y3C, predominant in south and northeast India.
Breeds and hybrids
Some 75 breeds of zebu are known, split about evenly between African breeds and Indian ones. The major zebu cattle breeds of the world include
Zebu, which can tolerate extreme heat, were imported into Brazil in the early 20th century. Their importation marked a change in cattle ranching in Brazil, where feral cattle had grazed freely on extensive pasturage, and bred without animal husbandry. Zebu were considered "ecological" since they could graze on natural grasses and their meat was lean and without chemical residues.
From the 1960s onwards,
Zebu were imported to Africa over many hundreds of years, and interbred with taurine cattle there. Genetic analysis of African cattle has found higher concentrations of zebu genes all along the east coast of Africa, with especially pure cattle on the island of Madagascar, either implying that the method of dispersal was cattle transported by ship or alternatively, the zebu may have reached East Africa via the coastal route (Pakistan, Iran, Southern Arabian coast) much earlier and crossed over to Madagascar. Geneticists at the International Livestock Research Institute (ILRI) in Nairobi, Kenya, and in Addis Ababa, Ethiopia claim that cattle were domesticated in Africa independent of domestication in the Near East. They conclude that the southern African cattle populations derive originally from the eastern seaboard rather than from a southbound migration of the western cattle. These results do not tell us whether domestication occurred first in Africa or the Near East.
Partial resistance to rinderpest led to another increase in the frequency of zebu in Africa.
In the early 20th century in Brazil, Zebu were crossbred with Charolais cattle, a European taurine breed. The resulting breed, 63% Charolais and 37% zebu, is called the Canchim. It has a better meat quality than the zebu and better heat resistance than European cattle. The zebu breeds used were primarily Indo-Brazilian with some Nelore and Guzerat. Another Charolais cross-breed with Brahmans is called Australian Charbray and is recognised as a breed in some countries. Zebu are very common in much of Asia, including China, Pakistan, India, Nepal, Bangladesh and almost all countries in Southeast Asia. In Asia, taurine cattle are only found in the northern regions such as Japan, Korea, and Mongolia, possibly domesticated separately from the other taurine cattle originating from Europe and Africa).
Zebu have humps on the shoulders, large dewlaps, and droopy ears. Compared to taurine cattle, zebus are well adapted to the hot, dry environment of the tropics. Adaptations include resistance to drought and tolerance of intense heat and sunlight.
As expected for a non-African breed, the zebu does not appear to have any
Zebu is phenotypically recognized by their hump on the backside of their body, their excess skin, and their large ears. Furthermore, another important characteristic of the Zebu is that they are able to defend against parasites and diseases quite well considering the harsh environment they reside in. 
Zebu are generally mature enough to give birth when they are 29 months old. This is based on the development of their bodies to withstand the strain of carrying and lactation. Early reproduction can place too much stress on the body and possibly shorten lifespans. Carrying time of the calf averages at 285 days, but varies depending on the age and nutrition of the mother. The sex of the calf may also affect the carrying time, as male calves are carried for a longer period than females. Location, breed, body weight, and season affect the overall health of the animal and in return may also affect the carrying period.
Studies on the natural weaning of zebu cattle have shown that the cow weans her calves over a 2-week period, but after that, she continues to show strong affiliatory behavior with her offspring and preferentially chooses them for grooming and as grazing partners for at least 4–5 years.
Zebu are used as
Jallikattu in India is a bull taming sport radically different from European bullfighting, humans are unarmed and bulls are not killed.