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Associate Professor Aaron Cowieson

Associate Professor Aaron Cowieson


Director - Poultry Research Foundation
Faculty of Veterinary Science
Ph:+61 2 9351 1612
Email:
Location:425 Werombi Road, Camden
Address:C01 - J.L. Shute
The University of Sydney, NSW 2570 Australia

Qualifications

BTechnol(Hons), MSc, PhD

Teaching Areas

  • Poultry nutrition;
  • Feed technology;
  • Feed additive biochemistry.

Research

Related to dietary phytate, exogenous enzyme supplementation, ingredient quality, poultry production, health and nutrition.

Contributions to the Profession and the Community

  • Chair - organising committee for the Australian Poultry Science Symposium;
  • Member – Embrex Fundamental Science Award Committee.

Career History

  • 2001-2003 – Scottish Agricultural College.
  • 2003-2008 – Danisco Animal Nutrition.
  • 2008-2010 – AB Vista Feed Ingredients.
  • 2010-present University of Sydney.

Selected Publications

Liu, N. & Cowieson, A.J. (2011) Effect of phytic acid and pH on the activation of chicken pepsinogen in vitro. Proceedings of the Australian Poultry Science Symposium, 22: 84-87.

Cowieson, A.J. & Cowieson, N.P. (2011) Phytate and the thermodynamics of water. Proceedings of the Australian Poultry Science Symposium, 22: 22-25.

Adeola, O. & Cowieson, A.J. (2011) Opportunities and challenges in using exogenous enzymes to improve non-ruminant animal diets. Journal of Animal Science, In press.

Cowieson, A.J., Wilcock, P. & Bedford, M.R. (2011) Phytate-free nutrition: super-dosing effects of phytase in poultry and swine. World’s Poultry Science Journal, In press.

Bedford, M.R. & Cowieson, A.J. (2011) Exogenous enzymes and their effects on intestinal microbiology. In press.

Cowieson, A.J., Bedford, M.R., Ravindran, V. & Selle, P.H. (2011) Increased dietary sodium chloride concentrations reduce endogenous amino acid flow and influence the physiological response to the ingestion of phytic acid by broiler chickens. British Poultry Science, In press.

Faurschou-Isaksen, M., Cowieson, A.J. & Kragh, K.M. (2011) Starch and protein-degrading enzymes – biochemistry, enzymology and characteristics relevant to animal feed use. In: Enzymes in Farm Animal Nutrition 2nd Edition. Bedford, M.R. & Partridge, G.G. (Eds.), CABI, UK. Pp. 85-95.

Selle, P.H., Ravindran, V., Cowieson, A.J. & Bedford, M.R. (2011) Phytate and phytase. In: Enzymes in Farm Animal Nutrition 2nd Edition. Bedford, M.R. & Partridge, G.G. (Eds.), CABI, UK. Pp. 160-205.

Walk, C.L., Cowieson, A.J., Remus, J., Novak, C. & McElroy, A. (2011) Effects of dietary enzymes on performance, goblet cells and apparent ileal amino acid digestibility of broilers exposed to a live coccidian oocyst vaccine. Poultry Science, 90: 91-98.

Cowieson, A.J., Bedford, M.R. & Ravindran, V. (2010) Interactions between xylanase and glucanase in corn-soy-based diets for broilers. British Poultry Science, 51: 246-257.

Olukosi, O.A., Cowieson, A.J. & Adeola, O. (2010) Growth performance and nutrient utilization responses to supplementation of individual or combination of phytase and cocktail of carbohydrases and protease in corn-soybean meal diets with or without DDGS for broilers. British Poultry Science, 51: 434-443.

Cowieson, A.J. (2010) Strategic selection of exogenous enzymes for corn-based poultry diets. The Journal of Poultry Science, 47: 1-7.

Cowieson, A.J., Bedford, M.R., Selle, P.H. & Ravindran, V. (2009) Phytate and microbial phytase: implications for endogenous nitrogen losses and nutrient availability. Worlds Poultry Science Journal, 65: 401-418.

Cowieson, A.J.& Bedford, M.R. (2009) The effect of phytase and carbohydrase on ileal amino acid digestibility in monogastric diets: complementary mode of action? Worlds Poultry Science Journal, 65: 609-624.

Cowieson, A.J. (2009) Effect of xylanase and phytase on ileal amino acid digestibility: complimentary mode of action? Recent Advances in Animal Nutrition – Australia 17, 45-54.

Selle, P.H., Cowieson, A.J. & Ravindran, V. (2009) Calcium interactions with phytate and phytase: consequences for pig and poultry nutrition. Livestock Science, 124: 126-141.

Woyengo, T.A., Cowieson, A.J., Adeola, O. & Nyachoti, C.M. (2009) Ileal digestibility and endogenous flow of minerals and amino acids: responses to dietary phytic acid in piglets. British Journal of Nutrition, 102: 428-433.

Shakouri, M.D., Iji, P.A., Mikkelsen, L.L. & Cowieson, A.J. (2009) Intestinal function and gut microflora of broiler chickens as influenced by cereal grains and microbial enzyme supplementation. Journal of Animal Physiology and Animal Nutrition, 93: 647-658.

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