Ask the cow.

Domesticated cattle were originally mainly used for service. Since then, especially after the18th century, with the development of agricultural mechanization and the change of consumer demand, except for a few yellow cattle in developing countries, ordinary cattle have developed in the direction of specialization through continuous breeding and cross improvement. For example, Britain has cultivated many beef cattle and meat and milk varieties; Continental European countries are the main producing areas of most dairy cattle breeds. After the introduction to the United States, British dual-purpose short-horned cattle were selected as dairy cows and bred into short-horned cows with changed body shape. The production types of modern cattle can be divided into the following four types:

The main varieties of milk are Erxia cattle, Juanshan cattle and Gengsai cattle (see).

Meat cattle mainly include short-horned Hereford, Aberdeen-Angus, Charolais, Limousin, Kianina, Lincoln Red Bull, Hornless Red Bull, Grove Cattle, Fangde Cattle, Murray Grey Cattle, as well as some breeds which were crossed by tumor cattle and ordinary cattle in modern times, such as Brahman, Boluo, Saint Gertrudis, King Beef Cattle, Bonsmara Cattle and so on.

Dual-purpose breeds mainly include dual-purpose short-horned cattle, Simmental cattle, Swiss brown cattle, Danish red cattle, Anger cattle, Xindi red cattle, Shahihua cattle and China cattle, as well as grassland red cattle and Xinjiang brown cattle bred by improving Mongolian cattle and Swiss brown cattle respectively.

China yellow cattle and buffalo are the main service varieties. Some cattle can also be used for meat, such as China cattle and Luxi cattle. Before 1970s, buffaloes were regarded as cows in some parts of China.

In addition, some countries have cultivated a strong and aggressive bullfighting variety, which is mainly used in competitions. In addition to Spain, other countries such as Mexico, Peru and Portugal. Luxi yellow cattle is one of the rare cattle breeds in China among the yellow cattle breeds in China. It is famous at home and abroad for its tall body, symmetrical structure, strength and high meat value. Its physical characteristics: the coat is light yellow to brownish red, mostly yellow, the nose and skin are flesh red, and some have black spots. Most cattle have completely incomplete three-powder characteristics, that is, the eye socket, mouth chakra and lower abdomen are pink white; Most of the horns are "inverted octagonal angle" or "shoulder pole angle", and most of the horns are "Longmen angle". The bull's head is short and wide, the forequarters are developed, the neck is short and thick, the flesh droops obviously, the shoulders are high, the chest is deep and wide, and the limbs are thick. Cows have long necks, straight backs and stiff limbs? Most of the hooves are amber, and the tail is slender and spindle-shaped.

Reproductive performance:

Luxi yellow cattle have strong reproductive ability. Generally, cows can be bred and pregnant at the age of 8- 10 months. If cows are bred for the first time at the age of 1.5-2, they can produce 7- 10 calves in their lifetime. The calving rate is high, and the bull matures later. Generally, it can be bred at the age of two and can be used for 5-7 years.