Scour worms (black scour worm [Trichostrongylus species]; brown stomach worm [Teladorsagia circumcincta]; and others [incl. Nematodirus]): dark scours; weight loss; death.
Barber's pole worm: anaemia (pale inside eyelids and gums); 'bottle jaw' (swelling under the jaw); lethargy, lagging or collapse when mustered; death.
NOTE: Other diseases can cause similar signs. Consult your vet if WormTests do not indicate worms.
Region: Pastoral
Date: %04 %Nov %2024
WormTest now, then return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1].
No treatment is required now if lambs are developing normally and putting on weight (if not seek veterinary advice). WormTest the lambs prior to weaning.
Consider a WormTest now, then return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1] when sheep are yarded.
WormTest now, then return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1].
Where possible, move sheep to another paddock.
Drench[1] (without a prior WormTest) prior to the flood arrival. Consider a long-acting product only if sheep are likely to be isolated for more than 6 weeks and they are in a summer rainfall area and ground conditions are wet. Also consider a fly preventative treatment and then move sheep to higher paddocks.
WormTest now, then return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1]. Consider further WormTests each 2—3 months under these conditions.
Consider a WormTest when the pasture is haying off and in February. Return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1].
WormTest each 4—8 weeks (depending on the amount of rainfall) until the season dries out. Return to this Drench Decision Guide to see if the worm egg count indicates the need for drenching[1].
These sheep should not require treatment. Review the Drench Decision Guide again if sheep show signs[1] that suggest a worm infection, if sheep are to be mustered or if seasonal and grazing conditions change.
This mob has a worm egg count result
Drench with a short-acting drench[1] if the mob's WormTest result is equal to or above the threshold figures in the table below for the class of sheep and the type of WormTest result.
Threshold worm egg counts at and above which sheep should be drenched in the Pastoral region
Class of sheep | No culture or culture has less than 60% barber's pole (i.e. mostly scour worms) | Culture has more than 60% barber's pole |
Ewes (dry to mid-pregnancy) or wethers | 400 epg | 800 epg |
Ewes pre-lambing | 300 epg | 300 epg |
Sheep under 18 months or rams | 300 epg | 500 epg |
This recommendation should be read with the information provided below.
Review available drenches with the WormBoss drench search
When giving all treatments
Follow the product labels. Dose to the heaviest sheep in the mob or groups. Calibrate equipment to ensure the right dose is delivered with the right procedures. Do not mix drenches unless the label states they are compatible. Check withholding periods and export slaughter intervals.
Choosing treatment options on your property
Use these 4 principles together, where possible:
For more details read the drench resistance section in the Pastoral WormBoss Worm Control Program.
Long-acting treatments
These are rarely necessary in the Pastoral region. You should seek expert advice before using them; more details can be found in the Pastoral WormBoss Worm Control Program.
Scour worms (black scour worm [Trichostrongylus species]; brown stomach worm [Teladorsagia circumcincta]; and others [incl. Nematodirus]): dark scours; weight loss; death.
Barber's pole worm: anaemia (pale inside eyelids and gums); 'bottle jaw' (swelling under the jaw); lethargy, lagging or collapse when mustered; death.
NOTE: Other diseases can cause similar signs. Consult your vet if WormTests do not indicate worms.
Class of sheep | No culture or culture has less than 60% barber's pole (i.e. mostly scour worms) | Culture has more than 60% barber's pole |
Ewes (dry to mid-pregnancy) or wethers | 400 epg | 800 epg |
Ewes pre-lambing | 300 epg | 300 epg |
Sheep under 18 months or rams | 300 epg | 500 epg |