References
- Orr , MB , Christiansen , KH and Kissling , RC . 1986 . A survey of excessively worn incisors and periodontal disease in sheep in Dunedin City, Silverpeaks . Bruce and Clutha Counties. New Zealand Veterinary Journal , 34 : 111 – 115 .
- Steele , KW and Henderson , HV . 1977 . Occurrence of periodontal disease in sheep in the Mangonui, Whangaroa, Hokianga and Bay of Islands counties . New Zealand Journal of Agricultural Research , 20 : 301 – 308 .
- Morris , PL , Whitley , BD , Orr , MB and Laws , AJ . 1985 . A clinical study of periodontal disease in sheep . New Zealand Veterinary Journal , 33 : 87 – 90 .
- Denholm , LJ and Vizard , AL . 1986 . Trimming the incisor teeth of sheep . The Veterinary Record , 119 : 182 – 184 . Another view.
- Anonymous BVA comment Veterinary Record 1986 119 49 49
- Anonymous Ministry of Agriculture and Fisheries Policy Statement, 1 June 1986 Ministry of Agriculture and Fisheries, Wellington 1986
- Healy , WB and Ludwig , TG . 1965 . Wear of sheep's teeth The role of ingested . soil. New Zealand Journal of Agricultural Research , 8 : 735 – 752 .