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Oestrus Behaviour - Anatomy & Physiology (view source)
Revision as of 11:30, 1 August 2008
, 11:30, 1 August 2008→Aids to Improve Oestrus Detection
* Useful during night hours when the cows are not observed.
* Useful during night hours when the cows are not observed.
* Good cow identification is important.
* Good cow identification is important.
=== Teaser Bulls ===
* Teaser bulls or androgenised cows will identify cows thst are in oestrus provided they have some sort of marker, such as a '''chin-ball device'''.
** The halter has a cone shaped device underneath which contains a freely rotating ball, working on the same principle as a ball-pen.
** The stainless steel ball container can be filled with ink of the desired colour.
** Each fill is enough to mark 25-30 cows (approx. 0.5 litre).
** Marks fade in 4 to 14 days
* Using bulls risks the spread of venereal disease.
* Some bulls aquire harems of specific cows.
== Clinical Methods and Assessments for Oestrus Detection ==
== Clinical Methods and Assessments for Oestrus Detection ==