title: Effectiveness of a mixture of cyromazine and diazinon for controlling flystrike on sheep.
abstract: OBJECTIVE
  To determine whether there is any need for woolgrowers to add diazinon to cyromazine jetting fluid to control active flystrike on sheep.
  
  
  METHODS
  Larval implants were placed on 143 sheep and allowed to develop for 2 days. Groups of 47 or 48 of these struck sheep were jetted with cyromazine at 1000 mg/L, diazinon at 400 mg/L, or a mixture of the two. After treatment, the implants were assessed daily for 3 days for the presence of feeding larvae.
  
  
  RESULTS
  When checked 1 day after treatment, there was a 62% reduction in flystrike in the diazinon treated sheep compared to only 12% reduction on the cyromazine treated sheep. Flystrike reduction on the sheep jetted with the mixture of cyromazine and diazinon was 69%. Three days after treatment flystrike control was 97 to 99% in the latter two groups.
  
  
  CONCLUSIONS
  Diazinon provided a faster resolution of strikes but by 3 days after treatment there was no significant difference in the number of implants remaining active on the sheep treated with cyromazine or with the mixture of cyromazine and diazinon.
authors.affiliation: Elizabeth Macarthur Agricultural Institute, NSW Agriculture, Camden.
authors.forename: G W
authors.initials: GW
authors.lastname: Levot
authors.forename: N
authors.initials: N
authors.lastname: Sales
mesh_terms: D000287:Administration, Topical; D000818:Animals; D003976:Diazinon / Q000008:administration & dosage / Q000627:therapeutic use*; D004338:Drug Combinations; D004350:Drug Residues / Q000032:analysis; D007306:Insecticides / Q000008:administration & dosage / Q000627:therapeutic use*; D009198:Myiasis / Q000517:prevention & control / Q000662:veterinary*; D011897:Random Allocation; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D014227:Triazines / Q000008:administration & dosage / Q000627:therapeutic use*; D014935:Wool / Q000737:chemistry
chemical_list: D004338:Drug Combinations; D007306:Insecticides; D014227:Triazines; C028704:cyromazine; D003976:Diazinon