Mature cow height measurements assess the height of mature females at the hip, and are measured in cm units.
Recording mature cow height data
Mature cow height should be taken using an appropriate (and accurate) tape measure or ruler, recorded to the nearest centimetre.
Do not guess/estimate height and ensure the height is recorded from the front of the animal’s hip, directly above the hook bone. Either measure the height correctly or don’t record the height.
While measuring techniques vary slightly, it is important to use a consistent technique for the whole group.
A common technique is to record height in the crush by attaching a level board horizontally to the top of the crush at a known height above the ground.
When the animal is standing stationary in the crush, a tape measure can be taken from the hook bone to the board, which is then subtracted from the known height between the board and ground to give the height of the animal.
Mature cow height should only be recorded when the animal is standing stationary on level ground.
When should mature cow heights be collected?
Mature cow height measurements should be taken when the 200 day weights for the progeny of the females are recorded, which will normally be at, or near the time of weaning.
Measurements can also be repeated at the start of joining and pre-calving for any members who are willing to collect multiple measurements throughout the year.