Editing Neutering (section)

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* Male mice – reversible regulation of the KATNAL1 gene in the Sertoli cell microtubule dynamics of the testes.<ref>{{Cite journal |first1= Lee B. |last1= Smith |first2= L. |last2= Milne |first3= N. |last3= Nelson |first4= S. |last4= Eddie |first5= P. |last5= Brown |first6= N. |last6= Atanassova |first7= M. K. |last7= O’Bryan |first8= L. |last8= O’Donnell |first9= D. |last9= Rhodes |first10= S. |last10= Wells |first11= D. |last11= Napper |first12= P. |last12= Nolan |first13= Z. |last13= Lalanne |first14= M. |last14= Cheeseman |first15= J. |last15= Peters |title= KATNAL1 Regulation of Sertoli Cell Microtubule Dynamics is Essential for Spermiogenesis and Male Fertility |date= May 2012 |url= http://www.eurekalert.org/pub_releases/2012-05/uoe-gdp052412.php |journal= PLOS Genetics |doi= 10.1371/journal.pgen.1002697 |volume= 8 |issue= 5 |pages= e1002697 |pmid= 22654668 |pmc= 3359976 |url-status= live |archive-url= http://archive.wikiwix.com/cache/20120526133105/http://www.eurekalert.org/pub_releases/2012-05/uoe-gdp052412.php |archive-date= 26 May 2012 |df= dmy-all |doi-access= free }}</ref>
* Female mammals – orally administered phosphodiesterase 3 inhibitor ORG 9935 daily before and during ovulation, which blocks the resumption of meiosis resulting in ovulation of a non-fertilizable, immature oocyte without rupturing the follicle.<ref>{{Cite journal| first1= Jeffrey T. |last1= Jensen |first2= Mary B. |last2= Zelinski |first3= Jessica E. |last3= Stanley |first4= John W. |last4= Fanton| first5=  Richard L. |last5= Stouffer | title=The phosphodiesterase 3 inhibitor ORG 9935 inhibits oocyte maturation in the naturally selected dominant follicle in Rhesus macaques | journal=Contraception |date=April 2008 | pages=303–7 | volume=77 | issue=4 | doi=10.1016/j.contraception.2008.01.003 | pmc=2505347| pmid=18342656 }}</ref>


"'''{{vanchor|Gomerization|reason=Redirects here. So do other terms boldfaced in this section.}}'''" is breeders' informal term for surgical techniques by which male livestock, such as bulls, retain their full [[libido]] (and related effects like sex [[pheromones]] that would be lost through castration), but are rendered incapable of [[copulation (zoology)|copulation]]. This is done to stimulate and identify [[estrous]] females without the risk of transmitting [[Sexually transmitted disease|venereal diseases]] or causing a pregnancy by a male other than the one intended for [[selective breeding]]. Animals altered for this purpose are referred to as '''teasers''' (teaser bulls, etc.), or '''gomers'''. Several methods are used. '''Penile translocation''' surgically alters the penis to point far enough away from its normal direction that it cannot manage [[vagina]]l penetration. '''Penile fixation''' permanently attaches the penis to the abdomen so that it cannot be lowered for penetration. [[Penectomy]] is the partial or complete removal of the [[penis]].<ref>{{cite web|url=http://www.drostproject.org/en_bovrep/2-8/itemtop56.html|title=Penectomized Teaser Bull|publisher=The Drost Project|access-date=2011-08-24|url-status=live|archive-url=https://web.archive.org/web/20120331044336/http://www.drostproject.org/en_bovrep/2-8/itemtop56.html|archive-date=31 March 2012}}</ref>