4,503
edits
Changes
Jump to navigation
Jump to search
Oestrus Behaviour - Anatomy & Physiology (view source)
Revision as of 10:03, 11 July 2008
, 10:03, 11 July 2008→Cow
== Cow ==
== Cow ==
* Oestrus detection is critical, as the absence of detection is the most important reason for delayed breeding.
* A common problem is lack of return to oestrus at a reliable time after parturition.
* Cows are not often run with the bull, and so detection is the job of the herdsperson.
* 70% of oestrus activity occurs at night.
* Groups of cows need to be examined at least 4 times a day at equally spread intervals.
* Average oestrus detection rates are ~ 60%, the target is >70%!
== Ewe ==
== Ewe ==