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A bull calf with high genetic potential may be reared for breeding purposes. It may be kept by a dairy farm as a herd bull, to provide natural breeding for the herd of cows. A bull may service up to 50 or 60 cows during a breeding season. Any more and the sperm count declines, leading to cows "returning to service" (needing to be bred again). A ...
Other than the few bulls needed for breeding, the vast majority of male cattle are castrated as calves and are used as oxen or slaughtered for meat before the age of three years. Thus, in a pastured herd, any calves or herd bulls usually are clearly distinguishable from the cows due to distinctively different sizes and clear anatomical differences.
This has usually been done by crossing with naturally polled breeds, most commonly Angus and Galloway cattle. For example, polled Jersey cattle originated in Ohio sometime prior to 1895. Two strains were developed, the first to appear being founded by crosses of registered Jersey bulls (the standard) on common muley (hornless) cows.
Cow and calf. The Black Baldy is a type of cross-bred beef cattle. It is traditionally produced by crossing Hereford bulls on Aberdeen Angus cows. [1]: 29 These cattle are commonly reared in Australia [2]: 190 and New Zealand. In North America, the term Black Whiteface is also used in some regions. [citation needed]
Most beef cattle are mated naturally, whereby a bull is released into a herd of cows approximately 55 days after the calving period, depending on the cows' body condition score (BCS). If it was a cow's first time calving, she will take longer to re-breed by at least 10 days. [ 4 ]
Heck cattle are twenty to thirty centimeters shorter than the aurochs they were bred to resemble. Heck bulls are not larger than other domestic bulls and actually a little smaller than cattle used in modern intensive agriculture, [9] whilst aurochs bulls reached shoulder heights of between 160 and 180 and in rare cases even 200 cm. Aurochs ...
Bull at a livestock show. The Brahman is an American breed of zebuine-taurine hybrid beef cattle. It was bred in the United States from 1885 using cattle originating in India, imported at various times from the United Kingdom, India, and Brazil. These were mainly Gir, Guzerá and Nelore stock, with some Indu-Brasil, Krishna Valley and Ongole ...
A Senepol bull. The Senepol breed of beef cattle was developed on the Caribbean Island of St. Croix.It has long been thought that Senepol originated from just crosses between N'Dama cattle, imported in the late 19th century, and Red Poll cattle, but it is actually an admixed breed that consists of Red Poll, N'Dama, Criola and a trace amount of Zebu.