Uptake and depletion studies on residues of ectoparasiticides in cattle produced under typical farm situations within the cattle tick and buffalo fly infested areas ,of queensland and new south wales.

Summary

1. To determine if current acaricide usage practices result in chemical residues unacceptable to the U.S.A. or other countries importing Australian beef.

2. To construct residue depletion curves for each active component ofthe acaricide or buffalo fly treatment in question.

3. To determine the effect of fat cover (P8 site), weight, age, breed and sex on residue levels and depletion rates.

4. To integrate project results into joint recommendations for chemical manufacturers and Government agency extension programs to the cattle industry.