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The meeting of individuals for sexual reproduction.



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.

References in periodicals archive ?
Kuba and Ito (1993) reported that wild females showed similar levels of remating (when offered wild males as second mates), regardless of whether the initial mating involved a wild or mass-reared male.
On the morning of 16 April 2006, between 05:55 and 09:00 MST, 2 female Sage-Grouse were observed mating multiple times on lek 10/11 (Fig.
Courtship and mating behavior vary greatly among crab species depending on habitat.
Exposure to con- and in some cases heterospecifics can strongly shape mate choice and mating behaviors.
As a result, an "arms race" for the control of fertilization may have led to the evolution of the diverse array of mating systems and bizarre accessory glands and organs found in simultaneous hermaphrodites (Michiels, 1998).
In many insects, males donate a nuptial gift during mating which is costly and typically positively associated with a male's body size (Heller & Reinhold 1994, Vahed & Gilbert 1996, Wedell 1997, McCartney et al.
In various studies, he and a colleague compared aspects of mating, for example, the length of time that the snails courted before copulating, when snails mated with and without dart piercing.
First and second matings of the same females revealed no significant difference regarding copulation duration when compared with the Wilcoxon signed rank test for matched pairs (Z = 20.43, P = 0.68, n = 38).
Overall, brachypterous males were much more successful than macropterous males in acquiring matings with a brachypterous female when placed in a one on one competitive situation with a rival male ([X.sup.2] = 5.59; P = 0.02).
The data consist of counts of males and females collected at each site and counts of inferred matings between particular kinds of males and females.
Earlier studies showed that the ability to achieve successful matings requires yeast hydrolysate in the pre-release diet (McInnis et al.