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Oestrus Behaviour - Anatomy & Physiology (view source)
Revision as of 10:16, 11 July 2008
, 10:16, 11 July 2008→Sow
== Sow ==
== Sow ==
'''''Oestrus Detection'''''
* Oestrus detection is a crucial assessment to ensure sows are presented to the boar at the correct time.
* Oestrus detection is a crucial assessment to ensure sows are presented to the boar at the correct time.
* Good relationship between weaning and return of oestrus, unlike the cow.
* Good relationship between weaning and return of oestrus, unlike the cow.
* Vulva swollen and congested 3 days prior to Oestrus.
* Observe twice daily remote from feeding time.
'''''Signs of Oestrus'''''
* Stands for a boar producing lots of [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheramones]] in [[Oral_Cavity_-_Salivary_Glands_-_Anatomy_%26_Physiology#Saliva|saliva]].
* Stands for a boar producing lots of [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheramones]] in [[Oral_Cavity_-_Salivary_Glands_-_Anatomy_%26_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.
* Vulva swollen and congested 3 days prior to Oestrus.
* Desire to seek the boar.
* Other signs include:
* Restlessness with repetitive grunts
** Restlessness with repetitive grunts
* Pacing
** Pacing
* Searching
** Searching
* Mounting
** Mounting
* Being mounted
** Being mounted
* Lowered feed intake
** Lowered feed intake
* Loss of appetite
** Loss of appetite
* Red, swolled vulva
** Male-like sexual behaviour:
* Male-like sexual behaviour:
*** Persuing
** Persuing
*** Nosing
** Nosing
*** Mounting other females
** Mounting other females
** Increase in [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vaginal]] mucous (requires digital examination)
* Increase in [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vaginal]] mucous (requires digital examination)
*** Usually more pronounced in guilts than sows.
** Usually more pronounced in guilts than sows.
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