This factsheet discusses the various external parasites of dairy cattle. It also includes tables with dairy cattle insecticide registrations and lists insecticides by specific pests for which they control. You can find a regularly updated version of this factsheet at http://edis.ifas.ufl.edu/ig050.
Please check this link first if you are interested in organic or specialty dairy production
P.E. Kaufman, P.G. Koehler, and J.F. Butler