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Bovine Sexing Agents


Dairy  Producers

     Heifers are your future!  And breeding  decisions are the lifeblood of your operation.  Why leave the sex of the calf  to chance?  HEIFERPLUS can be your most valuable breeding tool in selecting the next generation of heifers.   HEIFERPLUS works with any semen from any bull. 

     For every dollar you spend on HEIFERPLUS, the return from a 10% boost in calving rate and 20% boost in heifer numbers is 10X per annum.   After the second year, that return can exceed 25-50X per annum!  If you are in the purbredbusiness, the returns can be even higher.   Many of our customers will tell you that HEIFERPLUS is giving them the edge to stay in business today.   In these tough times, you need to ask yourself "can I afford to not use HEIFERPLUS?" 


HEIFERPLUS® Product Details


     Simple to use.  Everything you need for sexing a single straw of frozen bull semen is contained within the vial.  Semen is thawed as usual and then mixed in the HEIFERPLUS vial.  Incubate for 20 minutes and the sexed semen is ready for insemination.


     Our newest product for sexing of fresh bull semen.   For breeding programs that rely on collection of semen from your own bull.   After collection, just mix, incubate, and you are ready to inseminate.    Available in 10 dose vials.    For more information, click on the instruction link below.  


Description of HEIFERPLUS®

How does HEIFERPLUS work?   The sexing process "stimulates"  the fertility and motility of the X-chromosome bearing (female) sperm while "slowing" the fertility and motility of the Y-chromosome bearing (male) sperm.   When inseminated, the sperm are "sorted" in the reproductive tract.  The result is more ova fertilized by the X-bearing sperm... producing more heifer calves. 


Are pregnancy rates affected?   Our research team and the experience of cattle producers using HEIFERPLUS have shown that pregnancy rates are excellent  using this product.   Many producers are reporting an 5-25% increase in conception rates!


Handling Instructions:  Protect from light, heat, and moisture during storage and transport.  We recommend transporting the product in a cool, insulated container.


Storage:   Store in the freezer compartment (at or below -20oC) for up to two years.  


Expiration date:   HEIFERPLUS has shelf-life for 2 years from date of manufacture when stored in the freezer. 

Timing of insemination   

Semen sexed with HEIFERPLUS it is no longer conventional semen and requires special handling.   Instead of following the standard AM/PM rule, the new rule is breed a full 16-24 hours after first standing.  For more details on specific breeding protocols, see the HEIFERPLUS Instructions below. 


Please give us a call if you have questions adapting HEIFERPLUS to your specific breeding program.  





HEIFERPLUS is registered trademark of EMLAB Genetics, LLC



     Beef production and returns from steer calves can be 15-20% in excess of that of a heifer calf.  Feeder calf producers will want to take a look at incorporating gender selection and BULLPLUS into their AI program.  For a few cents on the dollar you can increase gross receipts up to 25%!



     Whether you need more bull calves to sell, more male embryos to transplant, or want to incorporate gender selection into your breeding management decisions, BULLPLUS will help you plan and make better decisions. 



     Turn the bottom-end of your herd into top-end beef producers.  F1 Dairy x Beef cross-bred steers can bring top-dollar at the sale barn.  Use BULLPLUS to ensure that it is a steer.


BULLPLUS™ Product Details


BULLPLUS in a new semen sexing kit.  Sexing of semen will never be easier.   Everything needed for sexing a single straw of semen is freeze-dried in the mixing vial.  It can be used with any bull or any frozen semen you already have in the tank.   Semen is thawed as usual and mixed in the BULLPLUS vial.  Incubate for 30 minutes and the sexed semen is ready for insemination.


Description of BULLPLUS™

How does it work?  BULLPLUS works by "accelerating" the motility of only the Y-chromosome bearing (male) sperm while "reducing" the motility of the X-chromosome bearing (female) sperm.  As a result, the male sperm arrive at the point of fertilization ahead of the female sperm.  More ovum are then fertilized by the male sperm resulting in a higher percentage of  males calves. There is no need to sort sperm mechanically; the gender-biased sperm are sorted in the reproductive tract of the cow. 


Are pregnancy rates affected?  Conception rates are excellent using BULLPLUS.  Many producers are reporting improved conception rates!


Handling: Keep away from heat, moisture, and bright sunlight.  We recommend transporting in a cool, insulated carton. 


Storage conditions: For long-term storage, keep in the freezer (at or below-20oC) for up to two years.


Expiration Date:   This product is a bio-pharmaceutical agent that is warranted from expiration for 2 years from the date of manufacture.  Improper handling and storage will void this warrant.

Timing of insemination  

It is important when using BULLPLUS to inseminate close to the time of ovulation. When breeding from first observed standing heat, breed virgin and 1st calf heifers 20-22 hrs. following the first observed standing heat.  With muture cows, breed 22-24 hrs. after first observed standing heat.  If you use the OvSynch timed breeding protocol, breed virgin and 1st calf heifers at 20-24 hrs and cows at 22-26 hrs. following the last GnRH injection. 

For more details on breeding protocols, see the BULLPLUS Instructions link below. 

Please give us a call if you have questions adapting BULLPLUS to your specific breeding program





BULLPLUS is a registered trademark of EMLAB Genetics, LLC.

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