Oxfendazole resistance in Nematodirus spathiger.
The occurrence of anthelmintic resistance in a field strain of Nematodirus spathiger is reported for the first time. In a controlled anthelmintic trial with naturally-acquired infections, oxfendazole at 5 mg/ kg and levamisole at 8 mg/kg were 0 and 86% effective respectively, against this strain.
Middelberg
A
A
Veterinary Services (HB) Limited, PO Box 503, Waipukurau.
McKenna
P B
PB