Changes

=== Signs of Oestrus ===

=== Signs of Oestrus ===

* Stands for a boar producing lots of [[Reproductive_Behaviour_-_Attractivity_Behaviour_- Anatomy & Physiology#Pheramones|pheromones]] in [[Salivary_Glands_-_Anatomy_&_Physiology#Saliva|saliva]].

* Stands for a boar producing lots of [[Attractivity Behaviour - Anatomy & Physiology#Pheramones|pheromones]] in [[Salivary_Glands_-_Anatomy_&_Physiology#Saliva|saliva]].

* Stands very firmly to be mounted, hence the 'back pressure test' is very reliable.

* Stands very firmly to be mounted, hence the 'back pressure test' is very reliable.

** But, becomes refractory after 10 minutes standing, then no visible response for 1-2 hours.

** But, becomes refractory after 10 minutes standing, then no visible response for 1-2 hours.

== Bitch ==

== Bitch ==

* Long period of '''proestrus''' where the bitch is [[Reproductive_Behaviour_-_Attractivity_Behaviour_- Anatomy & Physiology|attractive]], but will not allow mating.

* Long period of '''proestrus''' where the bitch is [[Attractivity Behaviour - Anatomy & Physiology|attractive]], but will not allow mating.

** Characterized by:

** Characterized by:

*** Vulval swelling

*** Vulval swelling

* Oestrus detection is important, for although the queen is an '''induced ovulator''' (thus [[The_Ovary_-_Ovulation_- Anatomy & Physiology|'''ovulation''']] will not be missed), the LH response to mating decreases with each day of oestrus and [[The_Ovary_-_Follicles_- Anatomy & Physiology|'''follicles''']] ultimately regress.

* Oestrus detection is important, for although the queen is an '''induced ovulator''' (thus [[The_Ovary_-_Ovulation_- Anatomy & Physiology|'''ovulation''']] will not be missed), the LH response to mating decreases with each day of oestrus and [[The_Ovary_-_Follicles_- Anatomy & Physiology|'''follicles''']] ultimately regress.

* '''Proestrus''' is short and often unnoticed.

* '''Proestrus''' is short and often unnoticed.

* Oestrus is characterized by increased [[Reproductive_Behaviour_-_Attractivity_Behaviour_- Anatomy & Physiology#Auditory_Signals|vocalization]],rubbing and rolling.

* Oestrus is characterized by increased [[Attractivity Behaviour - Anatomy & Physiology#Auditory_Signals|vocalization]],rubbing and rolling.

* Queen is more active and will seek the tom.  

* Queen is more active and will seek the tom.  

* Stands to be mated by lowering her front quarters and extending her hind legs.

* Stands to be mated by lowering her front quarters and extending her hind legs.