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Estrous synchronisation is the process of targeting female mammals to come to heat within a short time frame (36 to 96 hours). This is achieved through the use of one or more hormones. Methods to improve our ability to synchronize the reproductive process and result in the ‘timed insemination’ without the detection of heat have been developed.
In most cases of Dairy Bulls the bull has a halter or rope inserted into his nose ring. This is so he can be led and his handler can be a safe distance away, yet have some control over the animal. In the collection area there usually is a stall or stanchion where a mount animal is tied in. A mount animal can be a steer, a cow, or even another bull.
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.
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 ...
The procedure is used for breeding programs and research purposes in various species, as well as in the treatment of ejaculatory dysfunction in human males. This procedure is used frequently with large mammals, particularly bulls and some domestic animals, as well as humans who have certain types of anejaculation .
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]
Since most of the herd bulls have left the herd by this time of year, the breeding is usually done by the younger satellite bulls. After this phase the rut is over, most bulls will leave the cows and form bachelor herds to spend the winter with; however young bulls will usually remain with the cows throughout the winter. [14]
A cow mounting another cow. Bulling is a behaviour seen in cattle (and other mammals) when one mounts another, usually when one or the other is a female in oestrus (on heat); [1] "bulling" is commonly used as a term for a female in oestrus. Female cattle in oestrus may mount any adult cattle, especially a bull (fertile male) if one is present ...