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| + | == Pheramones == |
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| + | * Secretions from the female reproductive tract that serve to sexually stimulate and attract males to the female. |
| + | * Vaginal and urinary secretions from females in '''Oestrus''' smell different to the male then secretions of females not in Oestrus. |
| + | * Pheramone is a volatile substance released to the outside of the body and perceived by the olfactory system and/or activated by the vomeronasal organ. Releasing pheramones can cause specific behaviour in the recipient. |
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| + | * Males also produce sex pheramones. |
| + | ** Boars produce specific substances that cause sows and guilts to become sexually aroused when they are in '''oestrus'''. |
| + | ** Two sexual attractants are produced by boars: |
| + | *** Preputial pouch secretion |
| + | *** Pheramonal substance in saliva secreted by the submaxillary salivary gland. |
| + | **** During sexual excitement, the boar produces copious quantities of foamy saliva. The active components in saliva are the androgen metabolites 3 |