Animal identification Stock Breeding equipment Veterinary instruments

Heat detector, Insemination instruments, Ultrasound units,
Obstetric instruments
Instructions for using the heat detector
The heat detector consists of a measuring box with a built-on probe made of plastic. For measuring the
the electric resistance of the mucus of the uterus of cattle, 2 high sensitive ring electrodes are built-in the
probe.
In the measuring box, there is an indicating instrument for showing the value of ohm. To use the heat
detector, push the two buttons below the indicating instrument.
The button „EIN“ is used for the implementation of measurement and the button named „TEST“ is used
in combination with the button „EIN“ for controlling the battery charging. The battery can be recharged
with the built-in battery recharger by using the charging cable.
1) Checking the battery:
Please press both buttons („TEST“ and „EIN“) at the same time.
If you see a needle deflection to 60 ohm the heat detector is ready. If the needle drops down under
58 ohm, the battery of the heat detector for cattle has to be recharged for 10 hours on 220 v and 20
hours on 110 v. The charging time of the heat detector for pigs takes 8 hours on 220 v and 14 hours
on 110 v.
2) Please clean the genital of the animal carefully before starting the measurement on the examined
animal.
3) The Vulva can be dried by using a tissue. Insert the probe into the vagina without using an antiblocking
agent andtry to avoid any contamination of the probe. Our experience has shown us, that
you will get reliable values, if you press the probe slightly to the bottom of the vagina nearby
the cervix. The top has to be held down and then you have to press the button „EIN“ and the electric
resistance will be shown.
4) The shown value is an indicator for the stage of the heat. If the needle stays between 25-30 ohm,
it shows that the heat has began. If the needle stays between 30 and 40 ohm, the animal is in the
optimal time for insemination. This optimal time takes 6-8 hours in general, disregarding individual
differences.If the needle goes over 40 ohm, the heat is at his end and in the most cases it is too late
for a succesful insemination.
5) The measurement can be assured by controlling and examining the ovary. A hard follicle on the
ovary indicates, that it is too early for an insemination (measurement results 25-30 ohm). A soft and
elastic follicle shows the optimal time for insemination (measurement results 30-40 ohm). This
examination is definitively required, because the heat detector will also indicate the optimal time in
heat (30-40 ohm), even if there are clearly tangible cysts on the ovary.
6) If the value of the measurement is over 50 ohm, there can be an early pregnancy, if there was an
insemination in advance.
7) In the time without heat the values can also be about 50 ohm and more.
8) After the measurement the probe has to be cleaned with warm water and disinfection liquid (for
example 2% caustic lye of soda). Afterwards washing it up with cold water, drying it and disinfecting it
with 70% alcohol. Then you can do the measurement on the next cow. This cleaning avoids any
further infection from one animal to another.
9) The electrodes should also be cleaned after several uses with alcohol and a disposable cloth.
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