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* Progesterone levels peak 7-8 days after ovulation and decline quickly from day 18.
 
* Progesterone levels peak 7-8 days after ovulation and decline quickly from day 18.
 
* When progesterone levels fall to low basal levels, the negative feedback on the pituitary gland is removed.  This allows a sudden release of gonadotrophins.
 
* When progesterone levels fall to low basal levels, the negative feedback on the pituitary gland is removed.  This allows a sudden release of gonadotrophins.
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== Ewe ==
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=== Oestrous Cycle ===
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=== Cyclic Changes in the Ovaries ===
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=== Endocrine Changes during the Oestrous Cycle ===
    
= Links =
 
= Links =
    
[[Oestrous_Cycle_-Pharmacological_Manipulation_of_Oestrous_Cycles_-_Anatomy_%26_Physiology|Pharmacological Manipulation of Oestrous Cycles]]
 
[[Oestrous_Cycle_-Pharmacological_Manipulation_of_Oestrous_Cycles_-_Anatomy_%26_Physiology|Pharmacological Manipulation of Oestrous Cycles]]
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