References
- McKenna , PB , Badger , SB , McKinley , RL and Taylor , DE . 1990 . Simultaneous resistance to two or more broad-spectrum anthelmintics by gastrointestinal nematode parasites of sheep and goats . New Zealand Veterinary Journal , 38 : 114 – 17 .
- McKenna , PB . 1990 . The detection of anthelmintic resistance by the faecal egg count reduction test: An examination of some of the factors affecting performance and interpretation . New Zealand Veterinary Journal , 38 : 142 – 7 .
- Kettle , PR , Vlassoff , A , Lukies , JM , Ayling , JM and McMurtry , LW . 1981 . A survey of nematode control measures used by sheep farmers and of anthelmintic resistance on their farms. Part 1: North Island and the Nelson region of the South Island . New Zealand Veterinary Journal , 29 : 81 – 3 .
- Kettle , PR , Vlassoff , A , Ayling , JM , McMurtry , LW , Smith , SJ and Watson , AJ . 1982 . A survey of nematode control measures used by sheep farmers and of anthelmintic resistance on their farms. Part 2. South Island excluding the Nelson Region . New Zealand Veterinary Journal , 30 : 79 – 81 .
- McKenna , PB . 1989 . Anthelmintic resistance in the Southern North Island . Surveillance , 16 : 15 – 17 .
- McKenna , PB . 1991 . “ Update on drench resistance ” . In Petersen GV (convenor). Practical aspects of internal parasite control , 55 – 60 . Palmerston North : Publication No. 134. Foundation for Continuing Education of the New Zealand Veterinary Association .
- McKenna , PB . 1994 . Criteria for diagnosing anthelmintic resistance by the faecal egg count reduction test . New Zealand Veterinary Journal , 42 : 153 – 4 .
- Badger , SB and McKenna , PB . 1990 . Resistance to ivermectin in a field strain of Ostertagia spp. in goats . New Zealand Veterinary Journal , 38 : 72 – 4 .
- McKenna , PB , Badger , SB , McKinley , RL and Taylor , DE . 1990 . Simultaneous resistance to two or more broad-spectrum anthelmintics by gastrointestinal parasites of sheep and goats . New Zealand Veterinary Journal , 38 : 114 – 7 .