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Mating |
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mating [′mād·iŋ]
(biology) The meeting of individuals for sexual reproduction. Mating the coupling of agricultural animals, a means of natural insemination of dams by sires. Mating takes place when the female is in heat. Animals are allowed to mate for the first time when they reach sexual maturity: stallions and mares at the age of three years, bulls and cows at 15 to 18 months, rams and ewes at 12 to 18 months, and boars and sows at ten to 12 months. Animals of early-maturing breeds are mated somewhat earlier than those of late-maturing breeds. There are several types of mating. Voluntary coupling takes place in herds in which the males and females are kept together at pasture or in pens. Selective mating takes place when males kept separately from the females are paired with certain designated females. This type of mating makes possible selection, increased breeding use of the sire, and the obtaining of offspring during specific periods of the year. In animal breeding, natural mating is replaced by artificial insemination, a more efficient method of insemination. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Implicit in this method are three assumptions: 1) the time between release of young and remating is negligible, an assumption that was supported by observations of rapid remating in H. IT'S A SIN tp = isatins TIGER MAN tp = emigrant, remating US MALE tp = Samuel, ulemas BIG BOSS MAN td1 nabobisms BLUE CHRISTMAS td2 = submatrices BLUE MOON td1 = nelumbo GUITAR MAN td1 = armgaunt KING CREOLE td1 = relocking LOVING YOU td1 = vinology OLD SHEP td1 = sloped ONE NIGHT td1 = nothing SUCH A NIGHT td1 = hatchings SURRENDER td1 = endurers SUSPICION td1 = opinicus, psionics TEDDY BEAR td1 = betrayed TREAT ME NICE td1 = remittance DON'T ta1= donut, noted, tones G. The idea that infertile sperm discourage females from remating is old, but "this is the first evidence," says Penny A. |
Remating |
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