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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 ?
Here, however, for Tap-7 males there was no clear effect of pupal age at irradiation on their ability to inhibit female remating.
In conclusion, the age at which pupae are irradiated can have important effects on the quality of males; however, irradiation or the timing of irradiation had no effect on the ability of Tap-7 males to inhibit female remating.
Remating behavior in Anastrepha fraterculus (Diptera: Tephritidae) females is affected by male juvenile hormone analog treatment but not by male sterilization.
The percent remating propensity of non-irradiated females crossed with 100 Gy-irradiated males was not significantly different from the non-irradiated control.
Percent remating propensity of non-irradiated females mated with either 100 Gy-treated P males or their [F.
Remating success of non-irradiated females in the non-irradiated control experiment was 52.
Neither of these effects in the third experiment were observed in the second, which is why the data for each of the 3 remating days in the second experiment are shown combined, and also why the data from the first two experiments are combined in table 2.
In the controls, which did not have the opportunity to remate, females mated to DT did not consistently produce more offspring as might have been expected because of the well-documented phenomenon that remating females tend to carry less sperm (Newport and Gromko 1984).
This is consistent with the low-sperm effect on remating (Newport and Gromko 1984), which may be exaggerated by the 10-d delay to remating as compared to the 4-d delay in the sterile-male experiments.
Evaluation of Remating Frequencies of Lab-GSS and Wild-Strain Females Mated with Lab-GSS and Wild-Strain males
Evaluation of the Effect of Irradiation of Male Flies on Remating Frequencies of Wild-Strain Females
The male's ability to suppress female remating was analyzed by binary regression.