* The pineal gland controls reproductive cyclicity in seasonal breeders (sheep, goats, horses and cats) by the secretion of melatonin as the daylight hours are reduced. For more information on this mechanism, click [[Female_Reproductive_Tract_-Seasonality_of_Reproduction_-_Anatomy_%26_Physiology#Mechanism_of_seasonality|here]] | * The pineal gland controls reproductive cyclicity in seasonal breeders (sheep, goats, horses and cats) by the secretion of melatonin as the daylight hours are reduced. For more information on this mechanism, click [[Female_Reproductive_Tract_-Seasonality_of_Reproduction_-_Anatomy_%26_Physiology#Mechanism_of_seasonality|here]] |