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The meeting of individuals for sexual reproduction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Effects of LHRH on copulatory behavior and locomotor activity in sexually inexperienced male rats.
The new species Tereancistrum paranaensis is mainly characterized by the morphology of the copulatory complex (male copulatory organ with coils of about 2.5 rings and accessory piece small, non-articulated to male copulatory organ base), the morphology of dorsal anchor and dorsal bar shaped U.
Under the scapus, there are sclerotized folds that form two pockets that cover the copulatory openings on both sides of the epigynum.
Male pedipalp morphology and copulatory mechanism in Pholcus phalangioides (Fuesslin, 1775) (Araneae, Pholcidae).
Copulatory efficiency also decreased gradually, dose dependently and time dependently indicating that erection failure was continued.
simplicifolia extract in sexually potent rats for 9 consecutive days at all three dosages, did not exert a significant effect on copulatory parameters if compared with vehicle group (Fig.
Palps that were differentiated into copulatory bulbs (Figure 1b) were observed in males after the sixth molt.
Using these measures, the following parameters were computed % mounted, % intromitted, % ejaculated, copulatory efficiency (number intromissions / number of mounts + number intromission) and inter copulatory interval.
For example, the medial preoptic area (MPOA) has been shown to be important for sexual arousal, copulatory behaviour, and the refractory period of male rats (Hoffman, Gerall, & Kalivas, 1987; Oomura, Aou, Koyama, Fujita, & Yoshimatsu, 1988).
Modifications in the copulatory performance of Male Rats Produced by repeated peripheral shock.