Hoggets, not previously vaccinated
A typical response to vaccination from previously unvaccinated hoggets was recorded during summer from the Glen Innes district in New South Wales, Australia. The worm egg counts stayed low from November until mid-February, despite good rains in the district.
Using Barbervax in hoggets vaccinated as lambs the previous year.
Vaccination no. | When to adminster | Considerations |
V1 | November/December | Administer earlier if Spring was wet. |
V2 | 6-weekly intervals after V1 | Continue while protection is required. |
Hoggets, previously vaccinated
A typical response to vaccination from hoggets first vaccinated when weaners was recorded near Armidale in New South Wales, Australia.
Dorper ewes and lambs, not previously vaccinated
These Dorper ewes on a property near Glen Innes in New South Wales, Australia, had consistently low worm egg counts during their course of Barbervax.
Using Barbervax in breeding ewes vaccinated the previous year.
Vaccination no. | When to adminster | Considerations |
V1 | 1-2 weeks pre-lambing | This should be given with an effective pre-lambing drench to control scour worms as well as any early barbers pole worm and ewes should be moved to a low worm-risk lambing paddock that has been prerpared over the previous 6 months. |
V2 | At lamb marking | |
V3 | 6-weekly intervals | Continue while protection is required. |
Another example of low Barber’s Pole worm egg counts following use of Barbervax. These Merino ewes on a property near Armidale in New South Wales, Australia had been vaccinated as hoggets the previous season.
2016–2017 Drop Ewes
Date | Treatment | Egg Count | Hc (%) | Trich + Tela (%) |
06/09/21 | V1/Q drench | |||
28/09/21 | 210 | N/A | N/A | |
16/11/21 | V2 | |||
15/12/21 | 480 | 4 | 61 | |
28/12/21 | V3 | |||
01/02/22 | 795 | 2 | 95 | |
14/02/22 | Startec |
2018–2019 Drop Ewes
Date | Treatment | Egg Count | Hc (%) | Trich + Tela (%) |
06/09/21 | V1/Q drench | |||
28/09/21 | 1110 | 15 | 81 | |
16/11/21 | V2 | |||
15/12/21 | 135 | N/A | N/A | |
28/12/21 | V3 | |||
01/02/22 | 540 | 6 | 91 | |
14/02/22 | Startec |
N/A = no cultures performed because below threshold of 400 epg for coproculture.
- The egg count data above was obtained by a Barbervax user based near Glen Innes NSW, Australia.
- Two separate mobs of his ewes born either in 2016-17 or 2017-18 were given V1 (their first Barbervax vaccination) and a Q drench on 06/09/21.
- All were given two booster injections at 5 or 6 weeks later.
- Total worm egg counts made on 28/10, 15/12 and 01/02 revealed group means ranging from 135 to 1110 epg.
- Coprocultures showed that the proportion of Barbers Pole eggs in these samples was very low (Hc %) and that scour worm eggs predominated (Trich + Tela %).