PregBoost 500 cow pack

PregBoost 500 cow pack

500 cow treatment pack containing Cyclase and Gonasyn


  • Cyclase contains cloprostenol - proven prostaglandin for cattle

  • Can be used as the diluent for Novormon eCG in anoestrus treatment programs

  • The only available Cyclase approved by ACVM for reconstitution with  Novormon eCG

  • Both Cyclase and Gonasyn are supplied in plastic 100mL bottles in this pack

  • The only 2mL Gonadorelin dose in New Zealand

  • Gonasyn uses the proven GnRH analogue


  • Most popular and proven prostaglandin analogue in New Zealand cattle

  • Dose surety via simple 2mL program, reducing likelihood of errors

  • Gonadorelin is proven in GPG programs

  • Flexibility especially for dispensing final GnRH injection


Each 500 cow pack contains 1000 x 2mL doses of Gonasyn (GnRH), and 500 x 3mL doses of Cyclase along with quality, branded, bottle mounted injector guns for each injection.

Pack Sizes

PregBoost 500 cow pack contents:

20 x Gonasyn (GnRH) 100mL (50 dose) plastic vial                                   

1 x branded 2mL bottle mount injector and needle                                    

15 x Cyclase (PG) 100mL (50 dose) plastic vials                                        

1 x branded 3mL bottle mount injector and needle


DIB-Synch, and DIB-Synch Plus programs
These programs are generally administered with a progesterone insert such as a DIB-V or DIB-h.  
NZ research shows that the combined progesterone insert and these programs have the best chance of getting non-cycling dairy cows to ovulate and conceive promptly (via a DIB-Synch Plus Program), with resultant higher pregnancy rates. 
Use these programs in tandem with a progesterone insert to synchronise cycling heifers or cows, so that all animals can be inseminated on the same day with good conception rates to AI.                                      

Another option is using these programs without a progesterone device (this program is also known as ovsynch or GPG) with non-cycling dairy cows. This program is cheaper, but as pregnancy outcomes are lower it makes better economic sense to add a progesterone insert to the program each time.  This is because substantially more milk is produced from the higher proportion of cows in-calf earlier with DIB-Synch Plus.


Gonasyn and Cyclase are New Zealand restricted vet medicines. Please contact your veterinarian for advice on the best program for your herd.