For most late term mares, lying
completely on their side is unique
to the birth process. In order to
gather and focus the strength for a
contraction, the mare lies down in
the totally lateral position.
Research has established that a
contraction lasts a minimum of 7
seconds. The transmitter registers
this position and the alarm is
activated after 7.6 seconds.
1) The mare lies down in the totally lateral position
to rest. The alarm will not activate although the
receiver does indicate that the mare is on her side
and the transmitter is sending a signal. If the mare is
still lying in this position after three minutes the Birth
Alarm registers that the mare is resting and the
system is neutralized.
Suppose that after half an hour the mare gets up
and then once again lies down on her side. The Birth
Alarm again registers the position for a period of
three minutes. The period of three minutes is not
arbitrary. Research has shown that a mare’s
contraction never lasts longer than 2.5 minutes. The
Birth Alarm system is based on a period of 3 minutes
- a safety margin of 0.5 minutes.
Some mares may lie completely over on their side in order to rest.
There are two situations which may arise.
MODES OF OPERATION
Mode 4a
Mode 4b
2) Before delivery, the mare lies down flat on her side. The alarm does not go off after
7.6 seconds as the system is set on 4b but the receiver does register that the mare is lying
in this position. After the contraction the mare will prepare herself for the following
contraction. She does this by coming out of a the totally lateral position. If the Birth Alarm
registers this movement within a period of 3 minutes after the mare has laid down, the
alarm activates.
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