Manual

Draminski Ovulation Detector Manual

Introduction

One of the most essential elements in organizing animal breeding is detecting the moment of ovulation. This is of utmost importance to the efficiency with which the female is served; effective mating being so closely dependant to the right moment. Therefore, in the search for a sure and simple-to-use-method of detecting ovulation, scientists and animal breeders discovered a direct interdependence between changes in the electrical resistance of vaginal mucus and the occurrence of ovulation.

In the course of research on the properties of vaginal mucus, scientists determined that the closer to ovulation the more the change in its electrical resistance. Up-to-date knowledge on animal physiology, in particular about changes occurring in sexual organs during the estrous cycle, has enabled science to understand the correlation of changes occurring in the ovaries and changes in electrical resistance of mucus in the animal's vagina.

All of the above mentioned phenomena and interdependence of electrical resistance on ovulation have been used to advantage by DRAMIŃSKI in constructing the ELECTRONIC OVULATION DETECTOR for dogs.

Description

The electronic detector consists of a measuring probe, a digital display block where readings are taken and the handle with the ON/OFF switch. A common 9V battery is located within the handle.

Two parallel rings (electrodes) are to be found at the end of the probe. They are responsible for measuring the electrical resistance of mucus found in the vagina.

The magnitude of electric current flowing through these electrodes, as well as the electrical field created by this mini-current, is absolutely harmless to animals and people.

The body of the detector is made of polypropylene, which is resistant to atmospheric agents and most chemicals. The instrument is moisture proof, which enables the unit to be easily kept in a clean and hygienic condition.

For more detailed information visit the page Specs

Operation

The ON/OFF switch must be pressed and held on while the measurements are taken – the switch turns off immediately as it is released in order to conserve the battery power.

When switched to "ON" in the open air the instrument will stabilize within 1.5 to 2 seconds. While this is happening a random number or numbers are displayed followed by the digits "10", indicating that the battery is connected and the instrument operating, but no measurement is being taken.

After insertion of the probe, the detector should be turned on and readings taken after a 1.5-2 second period of stabilization.

The lowest unit indicated is 10 units while the full range is from 0 - 1990 units. When the upper limit is exceeded the digits "10" are displayed indicating overflow. This is the case when the detector is switched to "ON" in the open air.

Before use, ensure the electrodes are clean. Contamination with skin oil from handling can result in incorrect readings.

Familiarization

Before using the ELECTRONIC DETECTOR the first-time-user is advised to:
1. Take a few measurements on a number of females which are definitely in heat.
2. Take a few measurements on some females which are clearly not in heat.

The difference in readings between step 1 and 2 will help the first-time-user to get the feel of the instrument's function and shows the user the differences between particular animals.

The functioning of the detector may also be tested in "laboratory" conditions as follows:
Place the probe into a vessel containing clean water and take a reading. This reading will either be a very high one or "10" indicating overflow as the resistance of water is generally quite high. In practice this does not occur as the electrical resistance of vaginal mucus is far lower than the maximum range of the detector. Next add a pinch of salt to the water and stir well. Immerse the probe and take a reading. The result is now much lower as salt lowers the electrical resistance of the solution (less resistance = lower reading). Addition of another pinch of salt lowers the reading even further. This simple experiment illustrates the function of the detector as well as the phenomenon of abnormal fall in readings as a result of urine being present on the electrodes as urine also contains salt.

Before taking a reading follow these steps:

1. Check the electrical function of the detector in the open air to make sure the battery is at proper power. The LCD should display the numbers "10".

2. Sterilize the probe. You may use a medical equipment disinfectant or alcohol applied with a gauze or other sterile material.

3. If the bitch's vulva area is dirty, wash and wipe clean.

Taking a reading:

1. To make the examination easier it is convenient to place the dog on a table.

Spread the vulva gently. Insert approximately half the length of the probe until just before the resistance is felt at the neck of the cervix taking into account your specific breed type and size together with the location of the neck of the cervix. It is this area just prior to the cervix neck that has the highest concentration of mucus.

It is advisable to insert the probe initially at an approximate angle of 45 degrees and then 'level off' straight, in the same action and direction as would the stud dog. Then carefully make 2-3 half-turns or even a complete rotation so that the electrodes come into full contact with vaginal mucus. The measurement ought to be done at the upper or lower perimeter of the cervix, the upper being easier to determine.

The probe may also be directed to the sides of the cervix towards the horns at approximately 45 degrees of the left, then 45 degrees to the right. Repeat this measurement a few times on both sides, without withdrawing the probe, to achieve consistent and accurate readings.

Note! Once adopted, a consistent method should be used for all the measurements, i.e. the same length of the probe should be inserted and the measurements have to be taken in the same part of the vagina. Failing to do so can result in variable and inconsistent readings.

2. Press the ON/OFF switch and hold for 1.5 – 2 seconds until the readout on the LCD stabilizes. After noting the readout release the switch. A few readings may be taken at one insertion of the probe according to one's adeptness at the procedure to ensure consistent and accurate readings.

3. Remove the probe gently.

4. Disinfect as instructed in the section Disinfecting Photo and replace in storage box.

Visit our page Photo Manual for photos of the instructions explained above.

Interpretation of results

A typical graph indicating the fluctuations in vaginal mucus resistance is presented. The optimal mating period is indicated. Often in practice, there are variations to this normal curve and the maximum peak reading between animals. Thus, this optimal graph may be adjusted to each breeder's own experience and that of the individual bitch.

We recommend the following interpretation of readings: If the reading is between 100-200 units, there is no need to take daily measurements.
When readings rise above 200, daily measurements ought to be taken. Sometimes readings at this level may last a few days and then show a dynamic increase.
When readings begin to rise up to 600 units measurements can be taken 2 or 3 times a day to accurately determine the point of ovulation.

As shown on the graph, it is most important to record the day of maximum resistance and the subsequent decrease. Day one, at the latest day two, of this decrease in resistance values, is the ideal time for mating.

We encourage breeders to note the common "false peak" which occurs before the real one. It is easy to identify as it occurs at much lower resistance levels.

TYPICAL READINGS DURING HEAT In practice, the variations to the above curve may occur between breeds and individual bitches. The top figure may significantly exceed or be lower than 600 units (examples shown below). Therefore, each bitch should be treated individually. It is the 'profile trace' that needs to be determined as opposed to the unit value of the readings obtained. It is most important therefore to measure and record the resistance peak and the moment when readings begin to fall.

Disinfecting

Before and after each measurement, the detector must be disinfected. Careful and thorough cleaning and disinfection of the instrument is one of the most important conditions for proper usage.

We recommend wiping the probe with gauze, cotton linen or even tissue paper to clean it of mucus, feces, urine or hair, especially around the electrodes.

Then it is best to wash it under running water and finally immerse it in a solution made specifically for disinfecting medical equipment or wipe with gauze or other sterile material soaked in alcohol.

Always use disinfectants at concentrations given by the manufacturer, because if not used properly they may cause irritation of the vaginal lining. Wiping the probe clean before use will prevent this from happening.

Note! We would like to emphasize the importance of maintaining your detector in a hygienic condition. Carelessness about sterility or improper usage may lead to infection of the uterus. After each usage, wash, disinfect and dry your detector.

Important Recommendations

Do not lend fellow breeders your electronic detector in order to reduce the risk of contagious diseases being transmitted.
Follow disinfecting procedures closely.
Store the detector in dry conditions at room temperature.
Wash the detector in lukewarm water - do not use hot or boiling water. Dirt, or skin-oil on the electrodes will result in false readings (too high) whereas urine on the electrodes or solutions containing salt will cause lower readings.
Measurements should always be carried out in the same fashion and at the same position in the vagina, as this will give utterly reliable results.
We recommend readings be taken at the cervix.
We kindly ask all breeders to send us your comments and results gained from using our detector.

Battery Replacement

Low battery power is indicated by the words "LO BAT" flashing on the LCD. A new battery is required when this indicator appears.

To change the battery:
1. Unscrew both screws which fix the small cover on the end of the handle.
2. Remove the battery from the compartment and release from clasps.
3. Adjust clasps to new battery and insert into compartment.
4. Replace battery cover, ensure the rubber gasket is in place and tighten the screws.

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