Most districts are experiencing reduced worm activity due to a burst of hot windy weather that has dried everything out. Around parts of the New England, drench resistant Barbers Pole is causing issues. Worm Egg Counts saves drenching and reduces the onset of resistance.
In general, adult stock are coping with worms rather well, but 2013 lambs are feeling the impact and need regular monitoring. Introducing lambs to grain will boost weight gains and development of resistance to worms. Blowflies are active in some parts.
Relatively continuous rain, coolness and wind have provided the stage for severe worm challenge that will test even very good management. WECs at short intervals are the order of the day, particularly in lambs and weaners.
Worms have had a good year on properties with sub-optimal management. Other properties have experienced little or nil need to drench. Drenching “by the book or calendar” is not a good idea. Be careful treating sheep before shifting to stubbles.
Many of you will remember that we reported on a case of Monepantel (Zolvix) resistance in goats in New Zealand. Here Steve Love, NSW DPI, Armidale furthers the story. There are good lessons for us all in this.