PREG-ALERT PRO® INSTRUCTIONS
Contents
1. RENCO CORPORATION P PREG ALERT PRO INSTRUCTIONS Rev 3 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 For clarity and uniformity we have given all metric measurement in millimeters mm even though in some cases the common practice may be to use centimeters cm To convert to cm divide millimeters by 10 For the same reasons we have omitted inch conversions in many cases To convert mm to inches divide mm by 25 4 or multiply by 04 Note that In all cases and for all readings measurements can be indicated in either mm or inches QUICK START CONTROLS AND FUNCTIONS ON HOLD OFF Press to turn instrument on To turn on with backlight hold key for 2 seconds When reading is displayed press ON HOLD to maintain it Pressing again releases the HOLD Instrument automatically turns off if there is no use for 3 5 minutes SENS Keys Selects sensitivity L least through 4 greatest which is displayed on the screen Use the lowest setting that gives a result Using too high a setting could give spurious results DEPTH Keys The DEPTH Keys control the position of a vertical dashed marker on each screen Adjust to depth of interest using right and left arrow keys This marker is calibrated and the distance Is displayed on the right side of the screen In these Instructions scales at the bottom of the various illustration screens are evenly divided Minor divisions are not shown on the graphics here to avoid clutter PR2. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense This equipment also complies with Canadian requirements This equipment has been certified to be in compliance with CISPR 11 the EMC Directive 89 336 EEC AS3548 and applicable Harmonized Standards 2009 Renco Corporation Page 13 of 13
3. of the general procedure Pregnancy testing should be started on the right side with most mammals but with alpacas and mares testing should be started on the left side If no pregnancy is detected then try the other side in all cases but be cautious of the results in ruminate animals where the rumen might interfere Fat and Loin testing should be done at what is conventionally called the P2 site over the 10 rib and 6 5cm 2 3in off the backbone Some literature calls out the 12 rib but at least one researcher claims that the 10 rib produces a more accurate result because the fat is smoother We leave this decision up to the operator Many make measurements on both the right and the left side of the backbone In this preliminary writing we have shown one picture of the test site This will be amplified in future manuals Note however that at the end of the day there is no gold standard in determining the accuracy of fat and loin measurement In the meanwhile more complete information will be found in the Preg AlerteOperator s M anual on our website at www rencocorp com 2009 Renco Corporation Page 7 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 3 FAT LAYERS Probe LOIN Backfat Second Backfat mZOUXAO U Loin Muscle 61mm 2 2 5 thickness Bottom of Loin From Which Most of the Sound Waves are Returned Straight Back to the Probe NOTE 1 cm of depth 1 sg in of
4. View Right Back View Referring to the three pictorials for mares place the Deep probe on the LEFT flank area directly below the hip and in line with the bottom of the vulva Aim slightly back and across 2009 Renco Corporation Page 11 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 the body and scan as shown Side View Position 1 is for very early detection at around 14 30 days This a sliding scale and as gestation progresses you should move the probe downwards within the area shown by the outline in the side view Side View Position 2 is for use after approximately 90 100 days and the Standard probe may be used SCAN THIS AREA Pregnancy Test Site Goats Begin testing at around 30 40 days on the RIGHT side 2 inches 5cm in front of the rear leg and 1 inch 2 5cm above teat If not successful test again on the left side It may be necessary to remove hair from the test site 2009 Renco Corporation Page 12 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 A WORD ABOUT BATTERIES This instrument is designed to use disposable AA size carbon zinc batteries of which there are several types For maximum time if you are going to use the backlight feature frequently use the Alkaline variety and if not use a non alkaline variety You may also use rechargeable Nickel Metal Hydride batteries NM H but you must provide your own charger and they will not give as long a time between charges as you get
5. area Fat and Loin Measurement sites for Swine ABOUT 45 Pr g SCAN THIS AREA Yu hs he Yu UTERUS Pregnancy Test Site for Swine Begin Testing swine on right side and if not pregnant try again on the left side Testing can begin at 18 days testing every day until positive readings are obtained 2 days in a row Accuracy is greatest at 30 days 2009 Renco Corporation Page 8 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 Pregnancy Test Site for Sheep Top figure illustrates test site for very early checking at 25 days Bottom figure illustrates use at 35 days Test on left side if not successful It may be necessary to remove wool and dirt from test site s f Place probe where indicated h 2 on the phote at the angle shown Vigo B peis 4 LR 1 af fee bofa i he aj tir na ie rp de af h Preia mad i dlar ri der jz y mani are As reei dete 1 ed ge ee he ee eel Pregnancy Test Site for Alpacas Begin testing alpacas on the LEFT side at about 45 days Test on the right side if not successful After 60 days test on right side first 2009 Renco Corporation Page 9 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 Early pregnancy probe placement Aim at 45 across body to a point halfway between the hip bone and the pin bone 1 Alternate probe placement for later 2 For early pregnacy aim diagonally across in gestation 7 9 the pelvic cradle Upper shaded are
6. understood that this instrument is a tool and like most tools skill is best obtained by intelligent practice The instrument helps you by providing a computer enhanced display where spurious information is largely eliminated but the user must be the one to decide the true meaning of the displayed information Backfat and loin measurement are easier to learn than pregnancy As regards pregnancy detection both the animal type and days after conception at which testing is done are determining factor related to ease of use and skill requirement To illustrate on the one hand swine at 30 days are perhaps the easiest while on the other hand cattle at very early times are more difficult Fat measurement Select the FAT screen M ost backfat testing in swine for example is done over the last rib and 40 60mm off the center line called the P2 test site This test site is also important for making the standard loin measurement Sometimes measurements at multiple sites in this region are used Loin muscle measurements include skin and backfat so to measure just the loin thickness first determine backfat thickness using the backfat screen and then measure the loin and subtract the backfat reading Of the two LOIN screens select the one with the range appropriate for the total thickness involved Internal adjustments are made to the speed of sound factor to minimize the effect of the difference between fat and muscle tissue Pregnancy indicat
7. EGNANCY SCREENS The vertical marker displays the distance to a spike of interest To change from mm to inches go to the fat screen and press the OPTION key COW Left Major Division 101mm 4 in Right M ajor Division 338mm 13 5 in PIG 51 288mm 2 11 5 in SHEEP 51 288mm 2 11 5 in OTHER 51 209mm 2 8 3 in This screen is for small amp medium mammals Use COW for large mammals FAT Screen Range 3mm to 42mm 12 1 65in OPTION key selects units mm or in LOIN Screens Use OPTION Key to select low or high range 50mm 140mm 2 5 6in or 90 180mm 3 6 7 2in For the FAT and LOIN screens spikes that occur to right of the vertical marker position will be suppressed which helps to further refine the display SELECT Key FAT Display range Is 3 42mm Use OPTION key to select in or mm NOTE In order to switch measurement system with the OPTION key the FAT screen 2009 Renco Corporation Page 2 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 must be displayed The selected measurement system will be used for all measurements LOIN Use OPTION key to select the low range 50 140mm or the high range 90 to 180mm For both FAT and LOIN measurements indications to right of the vertical marker are suppressed thus mitigating extraneous information PREGNANCY Use OPTION key to select COW PIG SHEEP or OTHER Note The ruler scale division markers on the several pregnancy screens represent different intervals an
8. a As months Aiming gestation progresses tilt the probe by changing upward into the pressure on its top so as to scan downward abdominal cavity into the abdominal cavity Lower shaded area The white circle represents the probe Pregnancy Test Site for Cows Side and Top Views Refer to the three views of the cow For early pregnancy starting at about 22 days you will look for the thickened uterine wall rather than amniotic fluid or the fetus Aim the Deep probe as shown on the right side in the upper region of the outline in the paralumbar fossa a triangular region forward of the hook bone just behind the ribs and about 8 inches 20cm down from the backbone Locate the lowest spot in the fossa into which the probe will fit comfortably by pressing inward with your fist Place the probe firmly against the skin and point it halfway between the hook bone and pin bone pointing it slightly downward You don t need to move the probe in order to scan the uterus just rock and tilt 1 Probe placement for early pregnancy Shaded area represents area to scan 2 Alternate probe placement for later in gestation 7 9 months Shaded area represents area to scan Pregnancy Test Site for Cows Back view 2009 Renco Corporation Page 10 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 POINT OF HIP i I nj BOTTOM OF VULVA Pregnancy Test Site Mares Side View Pregnancy Test Site for Mares Left Side
9. ctions from the fetus es 2 One spike a reflection from the interface between amniotic fluid and the far side of the intrauterine wall 3 A reflection from the thickened wall of the uterus in cattle Connect the cable to the instrument and the proper probe to the cable Note That Standard probe having a blue body should be used for all animals except for very early pregnancy testing on cows mares and other large mammals The optional Deep probe larger and having a black body should be used for very early pregnancy testing in cows mares and other large mammals The Standard probe can be used with most large mammals after 90 days gestation The Standard probe can be used with large mammals at the early times but getting good indications is problematic and in any case more difficult 2009 Renco Corporation Page 3 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 The probe must make good contact with the skin air bubbles will block ultrasound A coupling fluid such as cooking oil must be used to enable good contact Apply the coupling fluid liberally to the skin probe or both Press the probe to the skin using a rotating rocking motion such that all air bubbles are removed The number one problem in using ultrasound instruments is lack of good skin contact We repeat Ultrasound will not pass through air bubbles USING THE PREG ALERT PRO In order to use the instrument efficiently and with the best results it must be
10. d are just for reference To see the actual distance from the skin to particular spike of interest use the DEPTH keys to move the vertical marker to it and read the distance shown in mm or inches To help avoid errors OPTION key must be held 1 2 second when changing from one screen to another COW PIG and SHEEP screens display a heavy horizontal bar under the graph which indicates the proximate distance to the near and far side of the uterus Strong spikes within this area indicate pregnancy The Preg Alert Pro is a microprocessor based instrument using low power A M ode ultrasound for the detection of pregnancy in mammals and the measurement of fat and muscle tissue thickness It can be likened to an electronic ruler that indicates a distance computed from the time it takes to receive the reflections echoes that were generated by the ultrasonic pulses emitted by the transducer also called the probe Sound travels at different speeds through fat and muscle The instrument uses the appropriate speed for each which may result in differences when compared to scanners most of which use the same speed for both tissues The display is an analog presentation in a digital environment which is enhanced to eliminate or mitigate the presentation of spurious reflections and noise often seen on older CRT displays There are three indications for pregnancy which are displayed as spikes on the screen 1 Pattern recognition of a group of refle
11. etermined either by sensing the fetus or the interface between the amniotic fluid and the far side of the intrauterine wall When detecting the fetus es one looks for 1 or more spikes near the center of the range When looking for the amniotic fluid interface at the far side of the uterus one looks for one spike at the far end of range In some animals cows and mares the uterine wall thickens very early in pregnancy and the instrument will display a spike from the near uterine wall left end of the bar in those cases 2009 Renco Corporation Page 5 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 DISPLAYS Note The fine ruler divisions are not shown in the displays below The SENS setting Is for illustration only PREGNANCY SCREEN FOR OTHER SM ALL M EDIUM MAMMALS Above are several screen shots illustrating the typical displays for various functions In the Pregnancy OTHER screen the dotted vertical line is the vertical marker which the user can set to indicate the distance of any spike from the skin surface The heavy solid vertical line is representative of the actual reading This might in fact be multiple closely spaced spikes In the COW pregnancy screen the vertical marker is shown for illustration purposes near the spike reading at the left end of the heavy solid bar beneath the graticule If the test is attempting to identify very early pregnancy then since the reading is at the left end of the black bar it wo
12. from the carbon zinc types Just for reference usage time with Backlight on and alkaline batteries is about 50 hours With backlight off about 150 hours WARNING DO NOT MIX CARBON ZINC AND NMH BATTERIES When using NMH batteries the batteries are fully charged when the battery charge indicator which appears on each display screen indicates 1 4 3 8 charged SERVICE There are no serviceable parts inside of the instrument DO NOT ATTEMPT TO DISASSEMBLE For service contact the factory RENCO CORPORATION 116 Third Ave North Minneapolis MN 55401 USA Tel 612 338 6124 Fax 612 333 9026 Email TechSupport Rencocorp com Internet http www rencocorp com CAUTION DO NOT USE THE PREG ALERT PRO ON HUMAN BEINGS CERTIFICATION AND COMPLIANCE FCC Required 15 21 Information to User Caution Changes or modifications not expressly approved by RENCO CORPORATION could void the user s authority to operate the equipment FCC 15 105 Information to User NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications
13. ions Each Pregnancy screen except the OTHER screen has a black bar at the bottom The bar indicates the proximate distance to the near and far points of the uterus at the number of days indicated It is important to understand that although the pregnancy screens named Pig Sheep and Cow have been tailored for the specific animal the screen can be used for any animal with the proximate body dimensions of the named animal A fourth pregnancy screen called OTHER can be used for all small and medium mammals but not for large mammals In addition when testing large mammals at very early times e g cows mares bison etc the optional Deep probe should be used 2009 Renco Corporation Page 4 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 Table 1 Approximate distances to near and far points of the uterus for various animals at the gestation times shown Distances Days Gestation Pigs amp Goats 2 8 in 50 200mm 28 30 Cattle 4 13 5 in 100 338mm 25 30 Alpacas 1 6 6 in 40 150mm 12 25 Sheep 1 6 6 in 40 150mm 28 30 Horses 4 7 13 5in 120 338mm 14 18 Llamas 2 6 in 50 150mm 12 30 Miniature Horses 2 8 in 60 200mm 14 18 M iniature Cattle 4 7 8 in 120 200mm 25 30 The above table is only a guide the purpose of which isto give the user some feel for the distances involved In use the important thing to look for is a strong high spike or group of spikes in the area of interest as displayed on the screen Pregnancy can be d
14. uld probably be indicating a thickened uterine wall The Deep probe would be used for this In actual use if the user wanted to know the actual distance being measured the spike would be held using a HOLD key the legend HOLD is displayed and DEPTH keys would then be used to superimpose the vertical marker over the reading and the distance from skin to spike would be displayed The LOIN high range screen shown above indicates a reading at 150mm The vertical marker prevents anything beyond about 165mm from being displayed Use of the marker is optional Pressing and holding the OPTION key momentarily while in the LOIN high range 2009 Renco Corporation Page 6 of 13 PREG ALERT PRO INSTRUCTION MANUAL Rev 3 11 28 2009 display will switch to a second LOIN low range screen which providing a range of 50 140mm Pressing the OPTION key again switches to the 90 180mm display Measurements would appear in inches if the OPTION key had been used to select inches when the FAT screen was displayed TESTING AND TEST SITES As an instrument manufacturer we are primarily instrument people and not animal people While we have done some development much of the site information provided below Is taken from the literature The Preg Alert Pro can be used with so many mammals that it is impractical to provide detailed testing information for all of them Therefore we will show just a few so that the operator will have an idea pictorially
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