Dr Sandy Mackenzie

Publications

Book Chapters

1. Mackenzie, A.M. (2005).  Fertility: why is it declining and can trace minerals reverse this trend?  In: Redefining Mineral Nutrition. (Edited by LA Tucker and JA Taylor-Pickard).  Nottingham University Press, ISBN: 1-094761-30-5.  pp.227-239.

Refereed Papers 

1. Mackenzie, A.M., Drennan, M.J., Rowan, T.G., Carter, S.D. and Dixon, J.B. (1997).  Effect of transportation and weaning on humoral immune responses of calves. Research in Veterinary Science, 63, 227-230.
2. Kendall, N.R,. Mackenzie, A.M. and Telfer, S.B. (2001).  The effect of a copper, cobalt and selenium soluble glass bolus given to grazing sheep.  Livestock Production Science, 68, 31-39.
3. Kendall, N.R., Mackenzie, A.M., Illingworth, D.V., Jackson, D.W., Gill, I.M. and Telfer, S.B. (2001).  The effect of a zinc, cobalt and selenium soluble glass bolus on the trace element status of extensively grazed sheep over winter.  Animal Science, 73, 163-169.
4. Haywood, S., Müller, T., Mackenzie, A.M., Müller, W., Tanner, M.S., Heinz-Erian, P. Williams,C.L. and Loughran, M.J. (2004).  Copper-induced hepatotoxicosis with hepatic stellate cell activation and severe fibrosis in North Ronaldsay lambs: a model for non-Wilsonian hepatic copper toxicosis of infants.  Journal of Comparative Pathology, 130, 266-277.
5. Capper, J.L., Wilkinson, R.G., Kasapidou, E., Pattinson, S.E., Mackenzie, A.M. and Sinclair, L.A. (2005).  The effect of dietary vitamin E and fatty acid supplementation of pregnant and lactating ewes on placental and mammary transfer of vitamin E to the lamb.  British Journal of Nutrition, 93, 549-557.
6. Capper, J.L., Wilkinson, R.G., Mackenzie, A.M. and Sinclair, L.A. (2006).  Polyunsaturated Fatty Acid Supplementation during Pregnancy Alters Neonatal Behavior in Sheep.  Journal of Nutrition, 136, 397-403.
7. Amory, J.R., Pearce, G.P. and Mackenzie, A.M. (2006).  The importance of housing environment in the occurrence of gastric ulcers in finisher pigs.  Veterinary Record 158, 260-264.
8. Dei, H., Rose, S.P. and Mackenzie, A.M. (2006).  Apparent metabolisable energy and digestibility of shea (Vitellaria paradoxa) fat, cocoa (Theobroma cacao) fat and soya bean oil in broiler chicks.  British Poultry Science, 47, 607-612.
9. Amory, J.R., Mackenzie, A.M., Eckersall, P.D., Stear, M.J. and Pearce, G.P. (2007).  Influence of rearing conditions and respiratory disease on haptoglobin levels in pigs at slaughter.  Research in Veterinary Science, 83, 428-435.
10. Capper, J.L., Wilkinson, R.G., Mackenzie, A.M. and Sinclair, L.A. (2007).  The effect of fish oil supplementation of pregnant and lactating ewes on milk production and lamb performance.  Animal, 1, 889-898.
11. Dei, H., Rose, S.P. and Mackenzie, A.M. (2007).  Shea nut (Vitellaria paradoxa) meal as a feed ingredient for poultry.  World’s Poultry Science Journal, 63, 611-624.
12. Dei, H.K. Rose, S. P. Mackenzie, A. M. and Pirgozliev, V. (2008)  Metabolizable Energy in different shea nut (Vitellaria paradoxa) meal samples for broiler chickens.  Poultry Science, 87, 694-699.
13. Dei, H., Rose, S.P. and Mackenzie, A.M. (2008).  Effects of fungal (Aspergillus niger  or  Ceriporiopsis subvermispora) fermentation on the nutritive value of Shea nut (Vitellaria paradoxa) meal for broiler chicks.  British Poultry Science, 49, 360-367.
14. Dei, H., Rose, S.P. and Mackenzie, A.M. (2008).  Growth performance of broiler chickens fed diets containing shea nut (Vitellaria paradoxa) meal fermentaed with Aspergillus niger.  Poultry Science, 87, 1773-1778.
15. Cope, C. M., Mackenzie, A. M., Wilde, D and Sinclair, L. A. (2009). Effects of level and form of dietary zinc on dairy cow performance and health. J. Dairy Sci. 92, 2128-2135.
16. Palliyeguru, M.W.C.D., Rose, S.P. and Mackenzie, A.M. (2010).  Effect of dietary protein concentrates on incidence of subclinical necrotic enteritis and growth performance of broiler chickens.  Poultry Science, 89, 34-43.

Refereed Abstracts

1. Mackenzie, A.M., Macdonald, D.C., Scaife, J.R., Acamovic, T., Warren, M. and Paton, F.A.C. (1991).  Effect of ?-carotene or polyunsaturated fatty acids and selenium on immune status of single and twin calves. (Abstr). Anim. Prod., 52, 595-596.
2. Paton, F.A.C., Scaife, J.R., Acamovic, T. Macdonald, D.C. and Mackenzie, A.M. (1991).  The effect of linoleic acid and / or vitamin E supplementation of calves on plasma vitamin status, erythrocyte membrane fatty acid composition and oxidation of membrane lipids. (Abstr). Anim. Prod., 52, 608.
3. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B., Tebble, J. and Drennan, M. (1993).  The effect of husbandry on immune responses of suckler calves.  Vet. Immunol. Immunopathol., 35 Suppl., 147-148.
4. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1993).  Assessment of immune responses as indicators of welfare in calves. (Abstr). Anim. Prod., 56, 437.
5. Mackenzie, A.M., Drennan, M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1993).  Effect of transportation and husbandry on humoral immune responses in suckler calves. (Abstr). Anim. Prod., 56, 437-438.
6. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1994).  Effects of nutrition and weaning on immune responses in calves: implications for welfare assessment. (Abstr). Anim. Prod., 58, 465.
7. Stewart, A.H., Edwards, S.A. and Mackenzie, A.M. (1994).  An assessment, using physiological parameters, of the welfare of group housed gilts on three feeding systems.  (Abstr). Anim. Prod., 58, 474.
8. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1995).  The behavioural, endocrine and immune responses of suckled calves to weaning and creep-feeding.  (Abstr). Anim. Sci., 60, 566.
9. Kendall, N.R., Mackenzie, A.M. and Telfer, S.B. (1996).  The development of a soluble glass bolus to deliver cobalt and selenium to sheep.  (Abstr)  Anim. Sci., 62, 689. 
10. Illingworth, D.V., Jackson, D.W., Mackenzie, A.M. and Telfer, S.B. (1997).  A preliminary survey of the trace element status of Llamas (Lama glama) in the UK.  Proceedings of the British Society of Animal Science, 152.
11. Kendall, N.R., Mackenzie, A. M. and Telfer, S.B. (1997). The effect of a zinc, cobalt and selenium soluble glass bolus on immune function in lambs. Proceedings of the British Society of Animal Science, 153.
12. Moeini, M.M., Mackenzie, A.M. and Telfer, S.B. (1997).  Effect of Cosecure? on the fertility and trace element status of dairy cattle. Proceedings of the British Society of Animal Science, 162.
13. Kendall, N.R., Mackenzie, A.M., Illingworth, D.V., Jackson, D.W., Driver, P.M., Gill, I.M., Miller, J.K. and Telfer, S.B. (1998).  Large scale trials of a soluble glass zinc, cobalt and selenium bolus given to sheep.  Proceedings of the British Society of Animal Science, 209.
14. Mackenzie, A.M., Evans, S., Lynn, J.N.C., Illingworth, D.V. and Wilkinson, R.G. (2000).  The effect of molybdenum, sulphur and iron on the copper status of store lambs. Proceedings of the British Society of Animal Science. 88.
15. Mackenzie, A.M., Moeini, M.M. and Telfer, S.B. (2001).  Effect of a copper, cobalt and selenium bolus on fertility and trace element status of dairy cattle. Fertility in the High-Producing Dairy Cow.  Proceedings of the Occasional Meeting of British Society of Animal Science, 26,423-427.
16. Allen, M.J., Stewart, A.H. and Mackenzie, A.M. (2000).  The effect of mixing piglets at different ages during lactation on post-weaning performance.  The Weaner Pig.  Proceedings of the Occasional Meeting of British Society of Animal Science, 14-15.
17. Allen, M. J., Stewart, A. H. and Mackenzie, A. M. (2001).  The effect of mixing piglets at different ages pre-weaning on pre-weaning behaviour. Proceedings of the British Society of Animal Science, 179.
18. Amory, J.R., Mackenzie, A.M., Pearce, G.P., Eckersall, P.D., Lampreave, F., Alava, M.A. and Varley, M.A. (2001).  The effect of respiratory disease on various acute phase protein levels in the slaughter pig. Proceedings of the British Society of Animal Science, 24.
19. Williams, C.L., Mackenzie, A.M., Illingworth, D.V. and Wilkinson, R.G. (2001).  The effect of molybdenum, iron and sulphur supplementation on growth rate and copper status of lambs. Proceedings of the British Society of Animal Science, 140.
20. Allen, M. J., Stewart, A. H. and Mackenzie, A. M. (2002).  The effect of leaving piglets in the farrowing rooms post-weaning and mixing pre-weaning on piglet behaviour. Proceedings of the British Society of Animal Science, 36.
21. Amory, J.R., Pearce, G.P., Mackenzie, A.M. and Varley, M.A. (2002).  Effect of rearing environment on “human approach behaviour” in grower-finisher pigs.  Proceedings of the British Society of Animal Science, 217.
22. Amory, J.R., Pearce, G.P. and Mackenzie, A.M.  (2002).  Effect of rearing environment on the prevalence of gastric ulcers in slaughter pigs.  Proceedings of the British Society of Animal Science, 218.
23. Capper, J.L., Wilkinson, R.G., Sinclair, L.A., Pattinson, S.E. and Mackenzie, A.M. (2002).  The effect of long-chain polyunsaturated fatty acids and vitamin E supplementation of ewes on neonatal lamb vigour, lamb growth and colostrum parameters.  Proceedings of the British Society of Animal Science, 7.
24. Handford, D., Percival, J., Wilde, D and Mackenzie, A.M. (2002).  The effects of feeding propylene glycol to ewes during late pregnancy and early lactation.  Proceedings of the British Society of Animal Science, 198.
25. Williams, C.L., Mackenzie, A.M. and Wilkinson, R.G. (2002).  The effect of molybdenum, iron and sulphur supplementation on immune function in growing lambs. Proceedings of the British Society of Animal Science, 203.
26. Lewis MR, Rose SP, Mackenzie AM, Tucker, L. (2003).  Effects of dietary inclusion of plant extracts on the growth performance of male broiler chickens.  British Poultry Science, 44, Suppl. 1, S43-S44 
27. Allen, M.J., Harrison, C.M., Stewart, A.H. and Mackenzie, A.M. (2003).  Effect of mixing piglets prior to weaning on immune responses of piglets. Proceedings of the British Society of Animal Science, 34
28. Blaken, C. Allen, M.J., Stewart, A.H. and Mackenzie, A.M. (2003).  The effect of pre-weaning mixing and vitamin C supplementation on piglet performance. . Proceedings of the British Society of Animal Science, 94.
29. Brierley, H.C., Stewart, A.H., Mackenzie, A.M., Blanchard, P.J., Tucker L. and Toplis, P. (2003).  The effect of Lycopene, a carotenoid with strong antioxidant properties, and a Neutraceutical mix on the performance and immune function of weaned pigs. . Proceedings of the British Society of Animal Science, 89.
30. Capper, J.L., Wilkinson, R.G., Kasapidou, E., Pattinson, S.E., Mackenzie A.M. and Sinclair, L A  (2003). The effect of vitamin E and long-chain polyunsaturated fatty acid supplementation of pregnant and lactating ewes on the transfer of vitamin E to the lamb. . Proceedings of the British Society of Animal Science, 61.
31. Marsh, S.P., Mackenzie, A.M. and James E.L. (2003).  Effect of weaning at 6 or 8 weeks old on the performance of dairy-bred beef calves. . Proceedings of the British Society of Animal Science, 112.
32. Partington, E.C., Sinclair, L.A., Mackenzie A.M. and Donaldson, J. (2003).  The effects of metabolisable protein on the periparturient relaxation of immunity against Teladorsagia circumcincta in mature Friesland dairy ewes. Proceedings of the British Society of Animal Science,
33. Williams, C.L., Haywood, S., Loughran, M., Wilkinson, R.G., Illingworth, D.V. and Mackenzie, A.M. (2003).  The effect of dietary molybdenum or iron on copper status and trace element accumulation in the pituitary and ovary of growing lambs.  Proceedings of the British Society of Animal Science, 195.
34. Partington, E.C., Sinclair, L.A., Mackenzie A.M. and Donaldson, J. (2004).  The effects of metabolisable protein supply and machine milking on the periparturient relaxation of immunity against Teladorsagia circumcincta in dairy ewes. Proceedings of the British Society of Animal Science, 10.
35. Capper, J.L., Wilkinson, R.G., Pattinson, S.E., Mackenzie A.M. and Sinclair, L A  (2004). The effect of long-chain polyunsaturated fatty acid and vitamin E supplementation of pregnant ewes on neonatal lamb behaviour and lamb growth. . Proceedings of the British Society of Animal Science, 130.
36. Williams, J., Stewart, A.H., Mackenzie, A.M., Powles, J., Rose, S.P., Eskinazi, S. and Smith, J. (2004).  The effect of hops in weaner pig diets of different energy levels.  Proceedings of the British Society of Animal Science, 158.
37. Mackenzie, A.M., Wilde, D., Pattinson, S.E. and R.G. Wilkinson (2005).  The effect of supplemental zinc source in late pregnancy and early lactation on the health and performance of ewe and lambs.  Proceedings of the British Society of Animal Science, 91.
38. Icely, S., Stewart, A. H., Blanchard, P. J.  and Mackenzie, A.M. (2005).  Effect of ascorbic acid supplementation of sows and piglets on health and performance of piglets.  Proceedings of the British Society of Animal Science, 97.
39. Capper, J.L., Wilkinson, R.G., Mackenzie, A.M. and Sinclair, L.A. (2006).  The effect of supplementing pregnant ewes with marine algae or linseed on milk yield, milk composition and lamb growth rate.  Proceedings of the British Society of Animal Science, 8.
40. Atkin, C.M., Mackenzie, A.M., Wilde, D. and Sinclair, L.A. (2007).  Effects of level and form of dietary zinc on dairy cow performance and health.  Proceedings of the British Society of Animal Science, 101.
41. Atkin, C.M., Mackenzie, A.M., Wilde, D. and Sinclair, L.A. (2008).  Effects of level and form of dietary zinc on apparent absorption and retention in dairy cattle.  Proceedings of the British Society of Animal Science, 114.
42. Cope, C., Mackenzie, A.M., Wilde, D. and Sinclair, L.A. (2009).  Effects of level and form of dietary zinc on dairy cattle performance and keratin production in the teat canal.  Proceedings of the British Society of Animal Science, 85.

Other Conference Papers

1. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1993).  Assessment of immune responses as indicators of welfare in calves.  British Society of Immunology, Spring Meeting, Liverpool.
2. Mackenzie, A.M., Rowan, T.G., Carter, S.D., Dixon, J.B. and Tebble, J. (1994).  Alteration of cellular and humoral immune responses by creep-feeding and weaning beef suckler calves.  European Association of Animal Production, 45th Annual Meeting, Edinburgh.  pp. 193.
3. Mackenzie, A.M., Rowan, T.G., Carter, S.D. and Dixon, J.B. (1995).  Alterations in immune responses resulting from weaning and level of nutrition in bucket reared calves.  4th International Veterinary Immunology Symposium, Davis, California, USA.  pp. 315.
4. Mackenzie, A.M., Illingworth, D.V., Jackson, D.W. and Telfer, S.B. (1996).  A comparison of methods of assessing copper and selenium status in cattle in the field.  XIX World Buiatrics Congress, Edinburgh.  pp. 405-408.
5. Telfer, S.B., Mackenzie, A.M., Illingworth D.V., and Jackson, D.W. (1996).  The use of caeruloplasmin activities and plasma copper concentrations as indicators of copper status in cattle.  XIX World Buiatrics Congress, Edinburgh.  pp.  402-404.
6. Kendall, N.R., Mackenzie, A.M. and Telfer, S.B. (1997).  Effect of a soluble cobalt, selenium and zinc glass bolus on humoral immune response and trace element status in lambs. In:  Trace Elements in Man and Animal -9:  Proceedings of the Ninth International Symposium on Trace Elements in Man and Animals.  (Edited by P.W.F. Fischer, M.R. L’Abbé, K.A. Cockell and R.S. Gibson).  NRC Research Press, Ottawa, Canada.  pp. 442-444.
7. Kendall, N.R., Mackenzie, A.M. and Telfer, S.B. (1997).  The use of a soluble glass bolus to prevent zinc deficiency in sheep. In:  Trace Elements in Man and Animal -9:  Proceedings of the Ninth International Symposium on Trace Elements in Man and Animals.  (Edited by P.W.F. Fischer, M.R. L’Abbé, K.A. Cockell and R.S. Gibson).  NRC Research Press, Ottawa, Canada.  pp. 303-305.
8. Mackenzie, A.M., Illingworth, D.V., Jackson, D.W. and Telfer, S.B. (1997).  The use of caeruloplasmin activities and plasma copper concentrations as indicators of copper status in ruminants. In:  Trace Elements in Man and Animal -9:  Proceedings of the Ninth International Symposium on Trace Elements in Man and Animals.  (Edited by P.W.F. Fischer, M.R. L’Abbé, K.A. Cockell and R.S. Gibson).  NRC Research Press, Ottawa, Canada.  pp. 137-138.
9. Mackenzie, A.M., Illingworth, D.V., Jackson, D.W. and Telfer, S.B. (1997).  A comparison of methods of assessing copper status in cattle. In:  Trace Elements in Man and Animal -9:  Proceedings of the Ninth International Symposium on Trace Elements in Man and Animals.  (Edited by P.W.F. Fischer, M.R. L’Abbé, K.A. Cockell and R.S. Gibson).  NRC Research Press, Ottawa, Canada.  pp. 301-302.
10. Mackenzie, A.M., Moeini, M.M. and Telfer, S.B. (1997).  The effect of continuous copper, cobalt and selenium supplementation by mean of a slow release bolus on the conception rate and trace element status of dairy cattle. European Association of Animal Production, 48th Annual Meeting, Vienna
11. Mackenzie, A.M., Moeini, M.M. and Telfer, S.B. (1998). The Effect of Cosecure on the conception rate and trace element status of dairy cattle.  XX World Buiatrics Congress, Syndey.  1055-1057.
12. Telfer, S.B., Moeini, M.M. and Mackenzie, A.M.  (1998). The effect of molybdenum, sulphur and iron on the oestrus cycle and copper status of Holstein Friesian heifers.  XX World Buiatrics Congress, Syndey.  1063
13. Mackenzie, A.M., Kendall, N.R., Illingworth, D.V., Jackson, D.W., Gill, I.M. and Telfer, S.B. (2000).  The effect of a copper, cobalt and selenium bolus on sheep from three upland Scottish farms. In:  Trace Elements in Man and Animals 10.  (Edited by Roussel, A.M., Anderson, R.A. and Favrier, A.E.).  Pluwer Academic / Plenum Publishers, New York.  pp. 749-752.
14. Kendall, N.R., Mackenzie, A.M., Illingworth, D.V., Jackson, D.W., Gill, I.M. and Telfer, S.B. (2000).  The effect of a zinc, cobalt and selenium bolus on sheep from nine upland Scottish farms. In:  Trace Elements in Man and Animals 10.  (Edited by Roussel, A.M., Anderson, R.A. and Favrier, A.E.).  Pluwer Academic / Plenum Publishers, New York.  pp. 782-783.
15. Kendall, N.R., Mackenzie, A.M. and Telfer, S.B. (2000).  Field trials of a copper, cobalt and selenium bolus. In:  Trace Elements in Man and Animals 10.  (Edited by Roussel, A.M., Anderson, R.A. and Favrier, A.E.).  Pluwer Academic / Plenum Publishers, New York.  pp. 784-785.
16. Amory, J.R., Mackenzie, A.M., Pearce, G.P., Eckersall, P.D., Lampreave, F. and Alava, M.A. (2000). Associations between respiratory lesions and serum haptoglobin and major acute phase protein levels in the slaughter pig. International Pig Veterinary Society meeting, Melbourne, Australia.
17. Amory, J.R., Mackenzie, A.M., Pearce, G.P., Eckersall, P.D., Lampreave, F. and Alava, M.A. (2000). The effect of respiratory disease on haptoglobin and major acute phase protein levels in the slaughter pig.  Research in Veterinary Science, 68 Suppl. A, 16. Proceedings of Association of Veterinary Teachers and Research Workers AGM, Scarborough.
18. Haywood, S., Mackenzie, A.M., Müller, T., Williams, C.L. and Loughran, M. (2002).  Copper-induced hepatotoxicosis with fibrosis in artificially fed North Ronaldsay lambs:  a paradigm for susceptible infants exposed to excess copper.  Proceedings of the 11th International Symposium on Trace Elements in Man and Animals, Berkelry, California.  pp. 52.
19. Williams, C.L., Wilkinson, R.G. and Mackenzie, A.M. (2002).  The effect of a molybdenum or iron induced copper deficiency on cellular and humoral immune responses in growing lambs. .  Proceedings of the 11th International Symposium on Trace Elements in Man and Animals, Berkelry, California.  pp. 30
20. Williams, C.L., Wilkinson, R.G. and Mackenzie, A.M. (2002).  The effect of molybdenum or iron on copper status of growing lambs. .  Proceedings of the 11th International Symposium on Trace Elements in Man and Animals, Berkelry, California.  pp. 110.
21. Williams, C.L., Haywood, S., Loughran, M., Wilkinson, R.G. and Mackenzie, A.M. (2002). Effect of dietary molybdenum or iron on copper status and pituitary gland trace element content of growing lambs.  Third International Meeting on Copper Homeostasis and its disorders: molecular and cellular aspects, Ischia, Italy.  
22. Telfer, S.B., Kendall, N.R., Illingworth, D.V., and Mackenzie A.M. (2004).  Molybdenum toxicity in cattle: an underestimated problem.  Cattle Practice, 12, 259-263. 
23. Capper, J.L., Wilkinson, R.G., Pattinson, S.E., Mackenzie, A.M. and Sinclair, L.A. (2004).  The effect of long-chain polyunsaturated fatty acid and vitamin E supplementation of ewes on neonatal lamb vigour.  Journal of Animal Science, 82 (Suppl. 1), 448.
24. Williams, C.L., Haywood, S., Wilkinson, R.G. and Mackenzie, A.M. (2005).  The effect of dietary molybdenum, sulphur and iron on the pituitary gland trace element content and function.  Proceedings of the 12th International Symposium on Trace Elements in Man and Animals, Coleraine, Northern Ireland.  pp. 63.
25. Dei, H.K., Rose, S.P. and Mackenzie, A.M. (2006).  Apparent metabolisable energy and digestibility of shea fat in broiler chicks.  British Poultry Abstracts, 2 (1), 35-37.
26. Dei, H.K., Rose, S.P. and Mackenzie, A.M. (2006).  Variability of nutritive value of shea nut (Vitellaria paradoxa) meal for poultry.  World’s Poultry Science Journal, 62 (Suppl.), 340-341.
27. Dei, H.K., Rose, S.P. and Mackenzie, A.M. (2007)  Metabolisable energy of shea nut (Vitellaria paradoxa) meal for poultry.  Poultry Abstracts, 3 (1), 36-37.
28. Dei, H.K., Rose, S.P. and Mackenzie, A.M. (2007)  Comparison of the growth of broiler chickens fed diets containing nutritionally improved shea nut (Vitellaria paradoxa) meal samples.  Proceedings of thje 15th Ghana Society of Animal Production, 124-127.
29. Dei, H.K., Rose, S.P. and Mackenzie, A.M. (2006).  Variability of dietary energy value of shea nut (Vitellaria paradoxa) meal for poultry.  Proceedings of the 16th European Symposium on Poultry Nutrition, 15-18.
30. Mackenzie, A.M., Atkin, C.M., Griffith, N., Williams, C.L., Edwards, S.G. and Wilkinson, R.G. (2008).  Effect of dietary antagonists on copper metabolism of sheep.  Proceedings of the 13th International Symposium on Trace Elements in Man and Animals, Pucon, Chile.  pp. 80-81.

Published Letters

1. Telfer, S.B., Kendall, N.R., Illingworth, D.V., and Mackenzie A.M. (2003).  Copper deficiency or molybdenum toxicity? Diagnosis and treatment requires a new perspective.  Cattle Practice,, 11, 189-192.
2. Telfer, S.B., Kendall, N.R., Illingworth, D.V., and Mackenzie A.M. (2005).  Copper deficiency or molybdenum toxicity? A right to reply.  Cattle Practice,, 13, 284-286.
3. Telfer, S.B., Kendall, N.R., Illingworth, D.V., and Mackenzie A.M. (2006).  Caeruloplasmin: plasma copper ratios in cows.  Veterinary Record, 159, 607-608.

• The effects of organically chelated zinc on performance in sheep - Director of Study