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Table 2 Result from a pilot study including 5 herds that were treated to eradicate lice in December 1993.

From: Eradication of Lice in Cattle

Herd Size (no. dairy cows) Herd characteristic Lice infestations before medication Medicament Lice present after medication
      March 1994 March 1995 March 1996
A 25 Open herd: Purchasing livestock Using common pasture D. bovis L. vituli Flumethrin No lice No lice No lice
B 16 Closed herd D. bovis Deltamethrin No lice No lice No lice
C 10 Open herd: Using common pasture D. bovis Deltamethrin No lice D. bovis D. bovis
D 20 Open herd: Purchasing livestock L. vituli Deltamethrin No lice No lice No lice
E 40 Open herd: Purchasing livestock D. bovis L. vituli Flumethrin No lice No lice D. bovis L. vituli