Autoworm First Grazer with its programmed release of seven separate worming doses is designed specifically to allow a degree of nematode development for stimulation of immunity.
Immunity to nematodes depends on adequate exposure to infection. Although not normally the case, circumstances could occur in which anthelmintic control measures might increase the vulnerability of cattle to re-infection.
Animals may be at risk towards the end of their first grazing season, particularly if the season is long, or in the following year if they move onto heavily contaminated pasture. In such instances, further control measures may be necessary.
Worm control is best achieved when calves are dosed with Autoworm First Grazer or Autoworm Finisher at turnout and set stocked throughout the grazing season, or moved to clean pasture in midsummer.
When an animal(s) is to be added to a group previously treated with Autoworm First Grazer or Autoworm Finisher then it is good management practice to minimise worm larval contamination of the pasture by the new animal(s).
This can be achieved by dosing with an appropriate anthelmintic product at the time the animal is moved.
Where cattle have received the bolus during their first season at grass it would be good practice, as with other anthelmintic dosing regimes, to maintain control measures during the following season.
Studies have shown that oxfendazole produces no adverse maternal or foetal effects when administered at the recommended dose rate in cattle. When administered to lactating cattle, less than 1% of the administered dose is excreted in the milk. Therefore, there is little risk to suckling animals when the product is administered to lactating females. Oxfendazole belongs to the benzimidazole (1-BZ) class of anthelmintics