Gonavet Veyx 50 µg/ml Solution for Injection for Cattle, Pigs and Horses

For intramuscular or subcutaneous injection. For intramuscular use, preferably in the
neck region. The product is intended for single administration except when used as
part of the “Ovsynch” timed artificial insemination protocol. Dosage in ml product and
micrograms Gonadorelin[6-D-Phe] per animal.
Cattle (cows and heifers) by intramuscular injection: 1.0 - 2.0 ml
(corresponding to 50 – 100 micrograms of Gonadorelin[6-D-Phe])
- Ovulation induction in case of delayed ovulation due to LH-deficiency 2.0 ml
- Induction/synchronization of ovulation within the framework of systems for timed
inseminations 1.0 - 2.0 ml

Revised May 2020
AN: 00676/2019
- Stimulation of the ovaries during the puerperal period from day 12 post partum 1.0 ml
- Ovarian cysts (due to LH-deficiency) 2.0 ml
Pigs (sows and gilts) by intramuscular or subcutaneous injection: 0.5 - 1.5 ml
(corresponding to 25 – 75 micrograms of Gonadorelin[6-D-Phe])
-
inseminations and parturition synchronization
Sows: 0.5 - 1.0 ml
Gilts: 1.0 - 1.5 ml
Horses (mares) by intramuscular injection: 2.0 ml
(corresponding to 100 micrograms of Gonadorelin[6-D-Phe])
The rubber stopper of the vial may be safely punctured up to 25 times. Otherwise,
automatic syringe equipment, or a suitable draw-off needle, should be used for the
20 ml and 50 ml vials to avoid excessive puncturing of the closure.
Special information
Cattle:
For oestrus and ovulation synchronization and timed artificial insemination (AI) in
cattle the so called “Ovsynch-procedure” was developed, which consists of the
combined use of GnRH and PGF2α. The following timed AI protocol has been
commonly reported in the literature:
Day 0:Inject 100 micrograms of Gonadorelin6-D-Phe
per animal
(2 ml of the product)
Day 7:Inject PGF2 or analogue (luteolytic dose)Day 9:Inject 100 micrograms of Gonadorelin6-D-Phe
per animal
(2 ml of the product)
AI:16 – 20 hours later, or at observed oestrus if
sooner
The Ovsynch-procedure may not be as efficacious in heifers as in cows.
Pigs:
The ovulation synchronization system includes the administration of Peforelin or
PMSG after the end of oestrus synchronisation with Altrenogest in gilts or after the
weaning in adult sows and two timed artificial inseminations. In adult sows the time
table depends on the duration of the suckling period. The following procedures are
recommended:

Revised May 2020
AN: 00676/2019
Gilts*Adult sows**Induction of
oestrus
Peforelin 48 h or PMSG
(eCG) 24 h - 48 h after last
application of Altrenogest
Peforelin or PMSG application
24 h after weaning
Synchronization
of ovulation
Gonadorelin6-D-Phe 78 -
80 h after Peforelin or PMSG
application
Suckling period > 4 weeks:
Gonadorelin6-D-Phe 56 -
58 h after Peforelin or PMSG
application
Suckling period 4 weeks:
Gonadorelin6-D-Phe 72 h
after Peforelin or PMSG
application
Suckling period 3 weeks:
Gonadorelin6-D-Phe 78 -
80 h after Peforelin or PMSG
application
st
AI24 - 26 h after Gonadorelin6-
D-Phe
24 - 26 h after Gonadorelin6-
D-Phe
nd
AI40 - 42 h after Gonadorelin6-
D-Phe
40 - 42 h after Gonadorelin6-
D-Phe
* The preferred dose of Gonavet Veyx in gilts is 50 micrograms Gonadorelin[6-D-
Phe]. However, the dose may be adjusted within the range of 50 - 75 micrograms to
take into account farm-specific aspects or seasonal influences. The proposed time
table should be strictly kept.
** The preferred dose of Gonavet Veyx in adult sows is 50 micrograms
Gonadorelin[6-D-Phe]. However, the administration of 25 micrograms is also
sufficient in case of sows with sow parity of more than 3 or during the mating period
of September until May. The proposed time table should be strictly kept.