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Estrous synchronization
In agriculture, estrous synchronization is used (particularly in the dairy and beef industries) to facilitate breeding by artificial insemination.
==Background==
The term "estrous" refers to the point of female sexual excitement in mammals which causes ovulation. At ovulation females are most receptive to mating. This period is commonly referred to as heat.〔TheFreeDictionary.com. 2013. Estrus synchronization. () Available at: http://www.thefreedictionary.com/Estrus+synchronization (24 Oct 2013 ).〕 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. GnRH and Prostaglandin F2 are two hormones used in the “Synch” protocols during oestrus synchronisation. 〔Hopkins, F. and Schrick, F. n.d. ESTROUS SYNCHRONIZATION. () pp. 1-2. Available through: http://animalscience.ag.utk.edu/Beef/Publications-Beef.html http://animalscience.ag.utk.edu/beef/pdf/EstrousSynchronization-FMH.pdf (28 Oct 2013 ).〕 The synchronization of the estrous cycle is often used in the Diary and Beef industries (and elsewhere) in order to decrease the costs for Artificial Insemination or feeding a bull by reducing the period in which it takes for all cows to be in heat and fall pregnant.〔Bridges, A. 2010. Basics Of Estrous Synchronization In Beef Cattle. Available at: http://ezproxy.library.usyd.edu.au/login?url=http://search.proquest.com/docview/815996343?accountid=14757〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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