References
- Anonymous Optigrow Trace Element Monitoring Manual. MAF Quality Management 1997
- Clark , RG , Wright , DF and Millar , KR . 1985 . A proposed new approach and protocol to defining mineral deficiencies using reference curves. Cobalt deficiency in young sheep is used as a model. . New Zealand Veterinary Journal , 33 : 1 – 5 .
- Clark , RG , Wright , DF , Millar , KR and Rowland , JD . 1989 . Reference curves to diagnose cobalt deficiency in sheep using liver and serum vitamin B12 levels. . New Zealand Veterinary Journal , 37 : 7 – 11 .
- Grace , ND , Knowles , SO , Sinclair , GR and Lee , J . 2003 . Growth response to increasing doses of microencapsulated vitamin B12 and related changes in tissue vitamin B12 concentrations in cobalt-deficient lambs. . New Zealand Veterinary Journal , 51 : 89 – 92 .
- Gruner , TM , Sedcole , JR , Furlong , JM and Sykes , AR . 2004 . A critical evaluation of serum methylmalonic acid and vitamin B12 for the assessment of cobalt deficiency of growing lambs in New Zealand. . New Zealand Veterinary Journal , 52 : 137 – 44 .