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A calf (pl.: calves) is a young domestic cow or bull. Calves are reared to become adult cattle or are slaughtered for their meat, called veal, and their hide.
The term calf is also used for some other species. See "Other animals" below.
"Calf" is the term used from birth to weaning, when it becomes known as a weaner or weaner calf, though in some areas the term "calf" may be used until the animal is a yearling. The birth of a calf is known as calving. A calf that has lost its mother is an orphan calf, also known as a poddy or poddy-calf in British. Bobby calves are young calves which are to be slaughtered for human consumption. [1] A vealer is a calf weighing less than about 330 kg (730 lb) which is at about eight to nine months of age. [2] A young female calf from birth until she has had a calf of her own is called a heifer [3] ( /ˈhɛfər/ ). In the American Old West, a motherless or small, runty calf was sometimes referred to as a dodie. [4] [ failed verification ]
The term "calf" is also used for some other species. See "Other animals" below.
Calves may be produced by natural means, or by artificial breeding using artificial insemination or embryo transfer. [5]
Calves are born after nine months. They usually stand within a few minutes of calving, and suckle within an hour. However, for the first few days they are not easily able to keep up with the rest of the herd, so young calves are often left hidden by their mothers, who visit them several times a day to suckle them. By a week old the calf is able to follow the mother all the time.
Some calves are ear tagged soon after birth, especially those that are stud cattle in order to correctly identify their dams (mothers), or in areas (such as the EU) where tagging is a legal requirement for cattle. Typically when the calves are about two months old they are branded, ear marked, castrated and vaccinated.
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The single suckler system of rearing calves is similar to that occurring naturally in wild cattle, where each calf is suckled by its own mother until it is weaned at about nine months old. This system is commonly used for rearing beef cattle throughout the world.
Cows kept on poor forage (as is typical in subsistence farming) produce a limited amount of milk. A calf left with such a mother all the time can easily drink all the milk, leaving none for human consumption. For dairy production under such circumstances, the calf's access to the cow must be limited, for example by penning the calf and bringing the mother to it once a day after partly milking her. The small amount of milk available for the calf under such systems may mean that it takes a longer time to rear, and in subsistence farming it is therefore common for cows to calve only in alternate years.
In more intensive dairy farming, cows can easily be bred and fed to produce far more milk than one calf can drink. In the multi-suckler system, several calves are fostered onto one cow in addition to her own, and these calves' mothers can then be used wholly for milk production. More commonly, calves of dairy cows are fed formula milk from soon after birth, usually from a bottle or bucket.
Purebred female calves of dairy cows are reared as replacement dairy cows. Most purebred dairy calves are produced by artificial insemination (AI). By this method each bull can serve many cows, so only a very few of the purebred dairy male calves are needed to provide bulls for breeding. The remainder of the male calves may be reared for beef or veal; Only a proportion of purebred heifers are needed to provide replacement cows, so often some of the cows in dairy herds are put to a beef bull to produce crossbred calves suitable for rearing as beef.
Veal calves may be reared entirely on milk formula and killed at about 18 or 20 weeks as "white" veal, or fed on grain and hay and killed at 22 to 35 weeks to produce red or pink veal.
A commercial steer or bull calf is expected to put on about 32 to 36 kg (71 to 79 lb) per month. A nine-month-old steer or bull is therefore expected to weigh about 250 to 270 kg (550 to 600 lb). Heifers will weigh at least 200 kg (440 lb) at eight months of age.
Calves are usually weaned at about eight to nine months of age, but depending on the season and condition of the dam, they might be weaned earlier. They may be paddock weaned, often next to their mothers, or weaned in stockyards. The latter system is preferred by some as it accustoms the weaners to the presence of people and they are trained to take feed other than grass. [6] Small numbers may also be weaned with their dams with the use of weaning nose rings or nosebands which results in the mothers rejecting the calves' attempts to suckle. Many calves are also weaned when they are taken to the large weaner auction sales that are conducted in the south eastern states of Australia. Victoria and New South Wales have yardings (sale yard numbers) of up to 8,000 weaners (calves) for auction sale in one day. [7] The best of these weaners may go to the butchers. Others will be purchased by re-stockers to grow out and fatten on grass or as potential breeders. In the United States these weaners may be known as feeders and would be placed directly into feedlots.
At about 12 months old a beef heifer reaches puberty if she is well grown. [6]
Calves suffer from few congenital abnormalities but the Akabane virus is widely distributed in temperate to tropical regions of the world. The virus is a teratogenic pathogen which causes abortions, stillbirths, premature births and congenital abnormalities, but occurs only during some years.
Calves commonly face on-farm acquired diseases, often of infectious nature. Preweaned calves most commonly experience conditions such as diarrhea, omphalitis, lameness and respiratory diseases. Diarrhea, omphalitis and lameness are most common in calves aged up to two weeks, while the frequency of respiratory diseases tends to increase with age. These conditions also display seasonal patterns, with omphalitis being more common in the summer months, and respiratory diseases and diarrhea occurring more frequently in the fall. [8] [9]
Calf meat for human consumption is called veal, and is usually produced from the male calves of Dairy cattle. Also eaten are calf's brains and calf liver. The hide is used to make calfskin, or tanned into leather and called calf leather, or sometimes in the US "novillo", the Spanish term. The fourth compartment of the stomach of slaughtered milk-fed calves is the source of rennet. The intestine is used to make Goldbeater's skin, and is the source of Calf Intestinal Alkaline Phosphatase (CIP).
Dairy cows can only produce milk after having calved, and dairy cows need to produce one calf each year in order to remain in production. Female calves will become a replacement dairy cow. Male dairy calves are generally reared for beef or veal; relatively few are kept for breeding purposes.
In English, the term "calf" is used by extension for the young of various other large species of mammal. In addition to other bovid species (such as bison, yak and water buffalo), these include the young of camels, dolphins, elephants, giraffes, hippopotamuses, deer (such as moose, elk (wapiti) and red deer), rhinoceroses, porpoises, whales, walruses and larger seals. (Generally, the adult males of these same species are called "bulls" and the adult females "cows".) However, common domestic species tend to have their own specific names, such as lamb, foal used for all Equidae , or piglet used for all suidae.
Veal is the meat of calves, in contrast to the beef from older cattle. Veal can be produced from a calf of either sex and any breed; however, most veal comes from young male calves of dairy breeds which are not used for breeding. Generally, veal is more expensive by weight than beef from older cattle. Veal production is a way to add value to dairy bull calves and to utilize whey solids, a byproduct from the manufacturing of cheese.
The Red Poll is a dual-purpose breed of cattle developed in England in the latter half of the 19th century. The Red Poll is a cross of the Norfolk Red beef cattle and Suffolk Dun dairy cattle breeds.
The Highland is a Scottish breed of rustic cattle. It originated in the Scottish Highlands and the Western Islands of Scotland and has long horns and a long shaggy coat. It is a hardy breed, able to withstand the intemperate conditions in the region. The first herd-book dates from 1885; two types – a smaller island type, usually black, and a larger mainland type, usually dun – were registered as a single breed. It is reared primarily for beef, and has been exported to several other countries.
The Jersey is a British breed of small dairy cattle from Jersey, in the British Channel Islands. It is one of three Channel Island cattle breeds, the others being the Alderney – now extinct – and the Guernsey. The milk is high in butterfat and has a characteristic yellowish tinge.
The Aberdeen Angus, sometimes simply Angus, is a Scottish breed of small beef cattle. It derives from cattle native to the counties of Aberdeen, Banff, Kincardine and Angus in north-eastern Scotland. In 2018 the breed accounted for over 17% of the beef production in the United Kingdom.
Weaning is the process of gradually introducing an infant human or another mammal to what will be its adult diet while withdrawing the supply of its mother's milk.
The Holstein Friesian is an international breed or group of breeds of dairy cattle. It originated in the Dutch provinces of North Holland and Friesland and in Schleswig-Holstein in northern Germany. It is the dominant breed in industrial dairy farming worldwide, and is found in more than 160 countries. It is known by many names, among them Holstein, Friesian and Black and White.
Dairy farming is a class of agriculture for the long-term production of milk, which is processed for the eventual sale of a dairy product. Dairy farming has a history that goes back to the early Neolithic era, around the seventh millennium BC, in many regions of Europe and Africa. Before the 20th century, milking was done by hand on small farms. Beginning in the early 20th century, milking was done in large scale dairy farms with innovations including rotary parlors, the milking pipeline, and automatic milking systems that were commercially developed in the early 1990s.
Dairy cattle are cattle bred for the ability to produce large quantities of milk, from which dairy products are made. Dairy cattle generally are of the species Bos taurus.
Neospora is a single celled parasite of livestock and companion animals. It was not discovered until 1984 in Norway, where it was found in dogs. Neosporosis, the disease that affects cattle and companion animals, has a worldwide distribution. Neosporosis causes abortions in cattle and paralysis in companion animals. It is highly transmissible and some herds can have up to a 90% prevalence. Up to 33% of pregnancies can result in aborted fetuses on one dairy farm. In many countries this organism is the main cause of abortion in cattle. Neosporosis is now considered as a major cause of abortion in cattle worldwide. Many reliable diagnostic tests are commercially available. Neospora caninum does not appear to be infectious to humans. In dogs, Neospora caninum can cause neurological signs, especially in congenitally infected puppies, where it can form cysts in the central nervous system.
Beef cattle are cattle raised for meat production. The meat of mature or almost mature cattle is mostly known as beef. In beef production there are three main stages: cow-calf operations, backgrounding, and feedlot operations. The production cycle of the animals starts at cow-calf operations; this operation is designed specifically to breed cows for their offspring. From here the calves are backgrounded for a feedlot. Animals grown specifically for the feedlot are known as feeder cattle, the goal of these animals is fattening. Animals not grown for a feedlot are typically female and are commonly known as replacement heifers. While the principal use of beef cattle is meat production, other uses include leather, and beef by-products used in candy, shampoo, cosmetics, and insulin.
La Reina is a Nicaraguan local breed originating from the Bos taurus varieties brought to America during the Spanish colonization in the 15th century. In the 1950s Joaquin Reyna and her Friend Costantino Sacasa Carazo, both being Nicaraguan breeders, formed a herd with approximately 200 females with typical characteristics of Creole cattle from which the Reyna breed was created, their name originating from Joaquin Reyna himself. Selection of animals was focused on red coat colour (sorrel) and milk production. The Nicaraguan government started an official inventory in the 1970s and in 1988 the Reyna cattle were declared as national patrimony, and in conjunction with the National Agrarian University of Nicaragua (UNA) agreed to a genetic improvement program of the cattle. The purebred Reyna Creole cattle population in Nicaragua consists of about 650 purebred females, including calves, heifers and cows distributed in five herds. Considering four herds with records the number of cows presently amount to 285.
The Black Baldy is a type of cross-bred beef cattle. It is traditionally produced by crossing Hereford bulls on Aberdeen Angus cows.
The Black Hereford is a crossbreed of beef cattle produced in Britain and Ireland with Hereford beef bulls and Angus. Black Herefords are not usually maintained from generation to generation, but are constantly produced as a byproduct of a terminal cross. They are one of the most common types of beef cattle in Britain and Ireland, outnumbering many pure beef breeds.
Cattle are large, domesticated, bovid ungulates. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos. Mature female cattle are referred to as cows and mature male cattle are referred to as bulls. Colloquially, young female cattle (heifers), young male cattle (bullocks), and castrated male cattle (steers) are also referred to as "cows".
Expected progeny differences (EPD) are an evaluation of an animal’s genetic worth as a parent. They are based on animal models which combine all information known about an individual and its relatives to create a genetic profile of the animal’s merits. These profiles are then compared to other individuals of the same breed.
A cow calf operation is a method of rearing beef cattle in which a permanent herd of cows is kept by a farmer or rancher to produce calves for later sale. Cow–calf operations are one of the key aspects of the beef industry in the United States and many other countries. In the British Isles, a cow–calf operation may be known as a single-suckler herd. The goal of a cow–calf operation is to produce young beef cattle, which are usually sold. A rancher who works within such a model is often called a "cow–calf operator" in the United States.
Creep feeding is a method of supplementing the diet of young livestock, primarily in beef calves, by offering feed to animals who are still nursing. Creep feed is sometimes offered to swine, and it is possible with companion grazing animals such as sheep and goats. Creep feeding is used almost exclusively in situations where animal prices are high, feed costs are low, offspring are born in the spring, and the animals are purebred.
Vaccinations for cattle involves the process of applying subcutaneous injections of biological microorganisms in a weakened state to help the immune system develop protection by providing active acquirement of immunity to a particular disease. Cattle are bovine livestock and are thus very susceptible to diseases. Vaccinations for cattle are widely used in the livestock industries of the Australian agriculture sector by farmers to prevent harmful and deadly diseases from infecting their livestock, avoiding any economical or biological harm. Farmed livestock industries account for 45% of the gross value of Australian agricultural output, beef cattle being the largest farmed livestock nationally with around 26.2 million head of cattle nationwide. The beef industry within Australia generates a gross value of approximately $8 billion AUD in beef exports and a total gross value of $11.4 billion in farm production (2017–18). Thus, vaccinations play a vital role in protecting, sustaining and growing the beef cattle industry in the Australian agriculture sector.
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