@article{Pech:161987,
      recid = {161987},
      author = {Pech, Caris L. and Doole, Graeme J. and Pluske, Johanna  M.},
      title = {Economic management of anthelmintic resistance: model and  application},
      journal = {Australian Journal of Agricultural and Resource Economics},
      address = {2009},
      number = {428-2016-27961},
      pages = {18},
      year = {2009},
      abstract = {The increasing prevalence of anthelmintic (drench)  resistance in gastrointestinal parasite
populations is  decreasing the profitability of the Australian sheep  industry. Refugia
management can delay its development by  not exposing a proportion of the worm
population to  chemical control. A dynamic-optimisation model is used to  assess the
economic value of refugia for management of the  worm species Teladorsagia circumcincta
and macrocyclic  lactone drenches in an application to Western Australian  sheep
flocks. A low rate of refugia (2 per cent) is most  profitable under standard circumstances
because it slows  the development of resistance, but also reduces the  proportion
of the flock not exposed to chemical control.  Frequent drench application should
remain the primary  method of control. However, its efficacy should be  preserved
through refugia management, rather than greatly  reducing treatment frequency.},
      url = {http://ageconsearch.umn.edu/record/161987},
      doi = {https://doi.org/10.22004/ag.econ.161987},
}