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== Refractory Period ==
 
== Refractory Period ==
* Following [[Reproductive_Behaviour_-_Copulatory_Behaviour_-_Anatomy_%26_Physiology#Ejaculation|ejaculation]]
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* Following [[Reproductive_Behaviour_-_Copulatory_Behaviour_-_Anatomy_%26_Physiology#Ejaculation|ejaculation]], all males experience a refractory period (commonly referred to as 'sexual exhaustion') before a second ejaculation can occur.
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* Length of refractory period depends on several factors:
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** Degree of sexual rest prior to copulation
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** Age of male
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** Degree of female novelty
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** Number of previous ejaculations
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* Normal for a male to copulate repeatedly with the same female.
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** Stallion will breed a mare in heat 5-10 times during one estrus period.
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** Rams remate with the same ewe 4-5 times.
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** Bulls remate with the same cow repeatedly.
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** Boars normally serve sows several times over a period of 1-2 days.
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* During the refractory period, further stimuli will not cause immediate responsiveness or motivation under a given set of stimulus conditions.
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* Restimulation may occur after the refractory period.
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* Large variation in behavioural reserves (behavioural capacity/'''libido''') among species.
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* Large variation in libido within species.
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** Governed by genetic and environmental factors.
    
== Memory ==
 
== Memory ==
4,503

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