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Puberty Onset Influencing Factors - Anatomy & Physiology (view source)
Revision as of 13:40, 8 September 2008
, 13:40, 8 September 2008→Environmental and Social Conditions
* Females reaching puberty in the presence of a male (producing the pheromones) have a greater opportunity of becoming pregnant.
* Females reaching puberty in the presence of a male (producing the pheromones) have a greater opportunity of becoming pregnant.
* Pubertal onset cannot be accelerated using pheromones in animals that have not achieved the appropriate metabolic body size to trigger hypothalamic responsiveness to Oestradiol (oestrogen).
* Pubertal onset cannot be accelerated using pheromones in animals that have not achieved the appropriate metabolic body size to trigger hypothalamic responsiveness to Oestradiol (oestrogen).
* The size of the social group in which females are housed has an influence over pubertal onset.
* Gilts housed in small groups will have delayed pubertal onset compared to gilts housed in larger groups.
* The presence of a male in either visual or direct physical contact will hasten the onset of puberty in gilts.
* Visual and olfactory environmental information is perceived by sensory neurons of the optic and olfactory systems.
* Stimuli are processed by the central nervous system and converted into neural inputs to the GnRH neurons of the hypothalamus.
* The hypothalamus then gains the ability to produce high frequency and high amplitude pulses of GnRH at an earlier age.