Dr Tim Wester staff profile picture

Contact details +64 (06) 356 9099  ext. 85258

Dr Tim Wester

Senior Lecturer

School of Agriculture and Environment

Originally from West Allis, Wisconsin in the USA, I received a BS-Agriculture with a chemistry minor from the University of Wisconsin--River Falls. I then studied ruminant nutrition at the University of Nebraska, Lincoln where I was awarded an MS and PhD. From there, I was a postdoctoral fellow with Dr Doug Burrin at the USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine in Houston, Texas. At Baylor I used the newborn pig model to examine the influence of growth hormone and diet on circulating hormones and protein synthesis in the neonate.  In 1996, I took up a postdoctoral position in Aberdeen, Scotland working at the University of Aberdeen and the Rowett Research Institute with Dr Gerald Lobley. While there, I used stable isotopes to study amino acid kinetics and protein metabolism in sheep.

I was hired as a Research Officer in the Institute of Food, Nutrition and Human Health in 2000. I moved to the Institute of Veterinary, Animal and Biomedical Sciences, and am now with the Monogastric Research Centre in the School of Agriculture and Environment. Since coming to Massey, I’ve explored nutrient utilisation by animals at various levels, from effects of feed and processing, to metabolism of nutrients within the body. I’ve collaborated with other scientists in many species, including seals, dogs, pigs, chickens, crocodiles, dairy cows, and domestic cats.

My personal area of research uses stable isotopes to examine the interaction between energy and protein metabolism in cats. Evolutionary pressures on the domestic cat from a diet high in animal tissue resulted in changes to their metabolism to include a number of metabolic peculiarities, such as a greater protein requirement. It is not actually protein that’s required, but the amino acids that make up protein. In all animals, amino acids are used primarily to make body protein (e.g., tissues and muscle), but some are also used to make glucose that is required to supply energy throughout the body, especially the brain. In the wild, cats would be reliant on glucose being formed from amino acids, thus their requirement for protein is high. To complicate matters, pet cats are often fed a diet that bears little resemblance to what it would have hunted in the wild. There has been very little research on nutrition and metabolism in cats.

I hold a BS-Agriculture from the University of Wisconsin-River Falls, and MS and PhD from the University of Nebraska-Lincoln. I came to Massey in 2000 after postdocs in the US and Scotland. My expertise is in the effects of feed form and diet composition on nutrient digestion and metabolism. My research explores topics ranging from effect of pelleting on nutrient use and gut development in poultry; impact of gelling agent on feed digestibility in farmed saltwater crocodiles in Papua New Guinea; influence of organic and conventional pasture on milk composition in cows; and amino acid metabolism in domestic cats.

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Professional

Contact details

  • Ph: 06 951 8258
    Location: 3.52, AgHort A
    Campus: Manawatu

Research Expertise

Research Interests

Animal Nutrition and Physiology

Protein Metabolism

Macronutrient Metabolism

Thematics

Health and Well-being

Area of Expertise

Field of research codes
Agricultural And Veterinary Sciences (070000): Animal Growth and Development (070202): Animal Management (070203): Animal Nutrition (070204):
Animal Physiology - Systems (060603):
Animal Production (070200):
Biochemistry and Cell Biology (060100): Biological Sciences (060000): Comparative Physiology (060604): Physiology (060600)

Keywords

Protein Metabolism, Macronutrient Metabolism, Stable isotope methodology, Feed processing, companion animals, digestive physiology

Research Projects

Summary of Research Projects

Position Current Completed
Project Leader 1 7

Research Outputs

Journal

Perera, WNU., Abdollahi, MR., Zaefarian, F., Wester, TJ., Ravindran, G., & Ravindran, V. (2019). Influence of inclusion level of barley in wheat-based diets and supplementation of carbohydrase on growth performance, nutrient utilisation and gut morphometry in broiler starters.. Br Poult Sci. , 1-13
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T., Zaefarian, F.
Perera, WNU., Abdollahi, MR., Ravindran, V., Zaefarian, F., Wester, TJ., & Ravindran, G. (2019). Nutritional evaluation of two barley cultivars, without and with carbohydrase supplementation, for broilers: metabolisable energy and standardised amino acid digestibility. British Poultry Science. 60(4), 404-413
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T., Zaefarian, F.
Rattanasomboon, T., Wester, TJ., Smith, SL., & Morel, PCH. (2019). Nutritive value of plantain and chicory for pigs. Livestock Science. 223, 8-15
[Journal article]Authored by: Morel, P., Wester, T.
Francis, M., Morel, PCH., Wilkinson, BHP., & Wester, TJ. (2017). Alginate increases water stability whilst maintaining diet digestibility in farmed saltwater crocodiles (Crocodylus porosus). Journal of Animal Science. 95(2), 820-826
[Journal article]Authored by: Morel, P., Wester, T., Wilkinson, B.
Schwendel, BH., Wester, TJ., Morel, PCH., Fong, B., Tavendale, MH., Deadman, C., . . . Otter, DE. (2017). Pasture feeding conventional cows removes differences between organic and conventionally produced milk. Food Chemistry. 229, 805-813
[Journal article]Authored by: Morel, P., Shadbolt, N., Wester, T.
Wester, TJ., Weidgraaf, K., Hekman, M., Ugarte, CE., Forsyth, SF., & Tavendale, MH. (2015). Amino acid oxidation increases with dietary protein content in adult neutered male cats as measured using [1-<sup>13</sup>C]leucine and [<sup>15</sup>N<inf>2</inf>]urea. Journal of Nutrition. 145(11), 2471-2478
[Journal article]Authored by: Hekman, M., Weidgraaf, K., Wester, T.
Wester, TJ., Kraft, G., Dardevet, D., Polakof, S., Ortigues-Marty, I., Rémond, D., . . . Savary-Auzeloux, I. (2015). Nutritional regulation of the anabolic fate of amino acids within the liver in mammals: Concepts arising from in vivo studies. Nutrition Research Reviews. 28(1), 22-41
[Journal article]Authored by: Wester, T.
Schwendel, BH., Wester, TJ., Morel, PCH., Tavendale, MH., Deadman, C., Shadbolt, NM., . . . Otter, DE. (2015). Corrigendum to "Invited review: Organic and conventionally produced milk-An evaluation of influence factors on milk composition" [J. Dairy Sci. 98, (2015) 721-746]. Journal of Dairy Science. 98(4), 2831
[Journal article]Authored by: Morel, P., Shadbolt, N., Wester, T.
Schwendel, BH., Wester, TJ., Morel, PCH., Tavendale, MH., Deadman, C., Shadbolt, NM., . . . Otter, DE. (2015). Invited review: Organic and conventionally produced milk-An evaluation of factors influencing milk composition. Journal of Dairy Science. 98(2), 721-746
[Journal article]Authored by: Morel, P., Shadbolt, N., Wester, T.
Schwendel, BH., Morel, PCH., Wester, TJ., Tavendale, MH., Deadman, C., Fong, B., . . . Otter, DE. (2014). Fatty acid profile differs between organic and conventionally produced cow milk independent of season or milking time. Journal of Dairy Science.
[Journal article]Authored by: Morel, P., Shadbolt, N., Wester, T.
Schwendel, BH., Wester, TJ., Morel, PCH., Tavendale, MH., Deadman, C., Shadbolt, NM., . . . Otter, DE. (2014). Invited review: Organic and conventionally produced milk-An evaluation of influence factors on milk composition. Journal of Dairy Science.
[Journal article]Authored by: Morel, P., Shadbolt, N., Wester, T.
Singh, Y., Ravindran, V., Wester, TJ., Molan, AL., & Ravindran, G. (2014). Influence of prepelleting inclusion of whole corn on performance, nutrient utilization, digestive tract measurements, and cecal microbiota of young broilers. Poultry Science. 93(12), 3073-3082
[Journal article]Authored by: Ravindran, V., Wester, T.
Singh, Y., Ravindran, V., Wester, TJ., Molan, AL., & Ravindran, G. (2014). Influence of feeding coarse corn on performance, nutrient utilization, digestive tract measurements, carcass characteristics, and cecal microflora counts of broilers. Poultry Science. 93(3), 607-616
[Journal article]Authored by: Ravindran, V., Wester, T.
Singh, Y., Ravindran, V., Wester, TJ., Molan, AL., & Ravindran, G. (2014). Influence of feeding coarse corn on performance, nutrient utilization, digestive tract measurements, carcass characteristics, and cecal microflora counts of broilers. Poultry Science. 93(3), 607-616
[Journal article]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, VR., Wester, T., Ravindran, GR., & Thomas, DV. (2013). Influence of pellet diameter and length on the quality of pellets and, performance, nutrient utilisation and digestive tract development of broilers fed wheat-based diets. British Poultry Science. 54(3), 337-345 Retrieved from http://www.tandfonline.com/doi/abs/10.1080/00071668.2013.780285
[Journal article]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2013). Influence of pellet diameter and length on the quality of pellets and performance, nutrient utilisation and digestive tract development of broilers fed on wheat-based diets. British Poultry Science. 54(3), 337-345
[Journal article]Authored by: Abdollahi, M., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2013). The effect of manipulation of pellet size (diameter and length) on pellet quality and performance, apparent metabolisable energy and ileal nutrient digestibility in broilers fed maize-based diets. Animal Production Science. 53(2), 114-120
[Journal article]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, VR., Wester, T., Ravindran, GR., & Thomas, DV. (2012). Effect of improved pellet quality from the addition of a pellet binder and/or moisture to a wheat-based diet conditioned at two different temperatures on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broilers. Animal Feed Science and Technology. 175(3-4), 150-157 Retrieved from http://www.journals.elsevierhealth.com/periodicals/anifee/article/PIIS0377840112001769/abstract
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, VR., Wester, TJ., Ravindran, GR., & Thomas, DV. (2012). The effect of manipulation of pellet size (diameter and length) on pellet quality and performance, apparent metabolisable energy and ileal nutrient digestibility in broilers fed maize-based diets. Animal Production Science. 53(2), 114-120 Retrieved from http://www.publish.csiro.au/?paper=AN12166
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2012). Effect of improved pellet quality from the addition of a pellet binder and/or moisture to a wheat-based diet conditioned at two different temperatures on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broilers. Animal Feed Science and Technology. 175(3-4), 150-157
[Journal article]Authored by: Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2012). Effect of improved pellet quality from the addition of a pellet binder and/or moisture to a wheat-based diet conditioned at two different temperatures on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broilers. Animal Feed Science and Technology.
[Journal article]Authored by: Wester, T.
Wester, TJ., weidgraaf, K., Hekman, M., Tavendale, MH., & Cave, NJ. (2011). Effect of glucose infusion and dietary protein level on urea production in the domestic cat.. Journal of Animal Science. 89 (E-suppl 1), 287-287
[Journal article]Authored by: Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2011). Influence of feed form and conditioning temperature on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broiler starters fed wheat-based diet. Animal Feed Science and Technology. 168(1-2), 88-99
[Journal article]Authored by: Abdollahi, M., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2011). Influence of feed form and conditioning temperature on performance, apparent metabolisable energy and ileal digestibility of starch and nitrogen in broiler starters fed wheat-based diet. Animal Feed Science and Technology.
[Journal article]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2010). Influence of conditioning temperature on the performance, nutrient utilisation and digestive tract development of broilers fed on maize- and wheat-based diets. BRITISH POULTRY SCIENCE. 51(5), 648-657
[Journal article]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2010). Influence of conditioning temperature on the performance, nutrient utilisation and digestive tract development of broilers fed on maize- and wheat-based diets. British Poultry Science. 51(5), 648-657
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2010). Influence of conditioning temperature on performance, apparent metabolisable energy, ileal digestibility of starch and nitrogen and the quality of pellets, in broiler starters fed maize- and sorghum-based diets. Animal Feed Science and Technology. 162(3-4), 106-115
[Journal article]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Wester, TJ., Weidgraaf, K., & Ugarte, CE. (2008). Effect of dietary protein level on whole body protein turnover in the adult cat (Felis catus). FASEB JOURNAL. 22,
[Journal article]Authored by: Weidgraaf, K., Wester, T.
King, MR., Wester, TJ., & Morel, PCH. (2007). The effect of dietary spray-dried bovine colostrum and plasma on the response of pigs to enterotoxigenic E. coli challenge after weaning. Livestock Science. 108(1-3), 292-294
[Journal article]Authored by: Morel, P., Wester, T.
Lobley, GE., Wester, TJ., Holtrop, G., Dibner, JJ., Parker, DS., & Vázquez-Añón, M. (2006). Absorption and digestive tract metabolism of 2-hydroxy-4-methylthiobutanoic acid in lambs. Journal of Dairy Science. 89(9), 3508-3521
[Journal article]Authored by: Wester, T.
Wester, TJ., Vázquez-Añón, M., Dibner, J., Parker, DS., Calder, AG., & Lobley, GE. (2006). Hepatic metabolism of 2-hydroxy-4-methylthiobutyrate in growing lambs. Journal of Dairy Science. 89(3), 1062-1071
[Journal article]Authored by: Wester, T.
Lobley, GE., Wester, TJ., Calder, AG., Parker, DS., Dibner, JJ., & Vázquez-Añón, M. (2006). Absorption of 2-hydroxy-4-methylthiobutyrate and conversion to methionine in lambs. Journal of Dairy Science. 89(3), 1072-1080
[Journal article]Authored by: Wester, T.
Simcock, SE., Rutherfurd, SM., Wester, TJ., & Hendriks, WH. (2004). Total selenium concentrations in canine and feline foods commercially available in New Zealand. New Zealand Veterinary Journal. 53(1), 1-5
[Journal article]Authored by: Wester, T.
Wester, TJ., Lobley, GE., Birnie, LM., Crompton, LA., Brown, SC., Buchan, V., . . . Lomax, MA. (2004). Effect of plasma insulin and branched-chain amino acids on skeletal muscle protein synthesis in fasted lambs. British Journal of Nutrition. 92(3), 401-409
[Journal article]Authored by: Wester, T.
Wester, TJ., Lobley, GE., Birnie, LM., & Lomax, MA. (2000). Insulin stimulates phenylalanine uptake across the hind limb in fed lambs. Journal of Nutrition. 130(3), 608-611
[Journal article]Authored by: Wester, T.
Lewis, AJ., Wester, TJ., Burrin, DG., & Dauncey, MJ. (2000). Exogenous growth hormone induces somatotrophic gene expression in neonatal liver and skeletal muscle. American Journal of Physiology: Regulatory, Integrative & Comparative Physiology. 278(4), 838-844
[Journal article]Authored by: Wester, T.

Conference

Wester, T., & Mammone, R. (2018). Rate of Gastric Emptying in Cats Fed a Cereal- or Meat-based Diet (P11-014). Vol. 2 , Nutrition 2018 Current Developments in Nutrition
[Conference Abstract]Authored by: Wester, T.
Schwendel, BH., Wester, TJ., Morel, PCH., Fong, B., Tavendale, MH., Deadman, C., . . . Otter, DE.Differences Between Organic and Conventionally Produced Milk Reduce When Both Systems Use Pasture-feeding. FASEB JOURNAL. 0892-6638.
[Conference]Authored by: Morel, P., Shadbolt, N., Wester, T.
Wester, TJ., Weidgraaf, K., Hekman, M., Bequette, BJ., Cave, NJ., & Tavendale, MH.Upregulation of Glucose Production by Increased Dietary Protein in the Adult Cat (Felis catus). FASEB JOURNAL. 0892-6638.
[Conference]Authored by: Cave, N., Wester, T.
Francis, M., Wester, TJ., Morel, PCH., Wilkinson, BHP., & Langelet, E. (2014). Improving water stability of extudate feed for farmed C.porosus. , 23rd working meeting of the Crocodile Specialist Group
[Conference Abstract]Authored by: Morel, P., Wester, T.
Francis, M., Wester, TJ., Morel, PCH., Wilkinson, BHP., & Langelet, E. (2014). Impact of Na alginate on nutrient digestibility of extrudate feed for farmed C. porosus.. , 23rd working meeting of the Crocodile Specialist Group
[Conference Abstract]Authored by: Morel, P., Wester, T.
Singh, Y., Ravindran, V., & Wester, TJ. (2014). Influence of pre-pelleting inclusion of whole corn on performance, nutrient utilization and digestive tract measurements of young broilers. (pp. 676 - 676). , 2014 Joint Annual Meeting Linking Animal Science and Animal Agriculture
[Conference Abstract]Authored by: Ravindran, V., Wester, T.
Francis, M., Wester, TJ., Morel, PCH., & Wilkinson, BHP. (2014). Sodium alginate addition improves water stability and utilization of extrudated feed for farmed saltwater crocodiles (c.porosus).. (pp. 663 - 663). , 2014, Joint Annual Meeting Linking Animal Sience and Animal Agriculture
[Conference Abstract]Authored by: Morel, P., Wester, T.
Schwendel, BH., Morel, PCH., Wester, TJ., Tavendale, MH., Deadman, C., Fong, B., . . . Otter, DE. (2015). Fatty acid profile differs between organic and conventionally produced cow milk independent of season or milking time. In Journal of Dairy Science Vol. 98 (pp. 1411 - 1425).
[Conference Abstract]Authored by: Morel, P., Shadbolt, N., Wester, T.
Singh, Y., Wester, TJ., Molan, AL., Ravindran, G., & Ravindran, V. (2013). Influence of whole wheat feeding on the development of coccidiosis in broilers. (pp. 119 - 119). , American dairy science association
[Conference Abstract]Authored by: Ravindran, V., Wester, T.
Kerr, SJ., Nuijten, WHM., Wester, TJ., Purchas, RW., & Morel, PC. (2013). Growth potential of New Zealand genotypes. In P. Morel (Ed.) Proceedings of the Massey University Advancing Pork Production Seminar. Vol. 3 (pp. 22 - 25). New Zealand: Massey University Advancing Pork Production Seminar
[Conference Paper in Published Proceedings]Authored by: Morel, P., Wester, T.
Abdollahi, MR., Ravindran, V., Wester, TJ., Ravindran, G., & Thomas, DV. (2012). Influence of pellet size on pellet quality and nutrient utilisation and performance of broilers.. Poster session presented at the meeting of American Society of Animal Science
[Conference Poster]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Wester, TJ., Thomas, DV., Ravindran, G., & Ravindran, V. (2012). Influence of conditioning temperature on broiler performance: A balance between nutrient availability and physical pellet quality. Proceedings of the 15th AAAP Animal Science Congress. (pp. 655 - 660). : 15th AAAP Animal Science Congress
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, G., Wester, TJ., Thomas, DV., & Ravindran, V. (2012). Effects of manipulation of pellet diameter and length on pellet quality, nutrient utilisation and broiler performance. In V. Ravindran (Ed.) Proceedings of the Massey Technical Update Conference. Vol. 14 (pp. 29 - 38). : Massey Technical Update Conference
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.Edited by: Ravindran, V.
Abdollahi, MR., Wester, TJ., Ravindran, G., Thomas, DV., & Ravindran, V. (2012). Influence of pellet size on pellet quality and performance and nutrient utilization of broilers. In Animal Science Journal Vol. 90 (pp. 563). , 2012, Joint annual meeting: Wiley
[Conference Abstract]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Schwendel, BH., Morel, P., Wester, T., Tavendale, MH., Deadman, C., Fong, B., . . . Otter, DE. (2012, November). Differentiation of organic from conventionally produced milk. Presented at 5th Australasian Dairy Science Symposium. Melbourne, VIC, Australia.
[Conference Oral Presentation]Authored by: Thatcher, A., Wester, T.
Schwendel, BH., Morel, P., Wester, T., Tavendale, MH., Deadman, C., Fong, B., . . . Otter, DE. (2012). Differentiation of organic from conventionally produced milk. In J. Jacobs (Ed.) Proceedings of the 5th Australasian Dairy Science Symposium. (pp. 159 - 161). Australia: 5th Australasian Dairy Science Symposium
[Conference Paper in Published Proceedings]Authored by: Shadbolt, N., Thatcher, A., Wester, T.
Wester, T. (2012, December). What's up pussy-cat: Protein metabolism in a domestic carnivore. Presented at Institute of Veterinary, Animal and Biomedical Sciences [IVABS] Research Colloquium. Palmerston North, New Zealand.
[Conference Oral Presentation]Authored by: Wester, T.
Wester, T. (2012). What's up pussy-cat: Protein metabolism in a domestic carnivore. In Institute of Veterinary, Animal and Biomedical Sciences [IVABS] Research Colloquium: Programme and Abstracts(pp. 17 - 17). , Institute of Veterinary, Animal and Biomedical Sciences [IVABS] Research Colloquium New Zealand: Institute of Veterinary, Animal and Biomedical Sciences
[Conference Abstract]Authored by: Wester, T.
Abdollahi, MR., Ravindran, G., wester, TJ., Thomas, DV., & Ravindran, V. (2011). Effects of pellet binder or moisture addition at different conditioning temperatures on pellet quality and broiler performance. In V. ravindran (Ed.) Proceedings of the Massey Technical Update Conference. Vol. 13 (pp. 54 - 63). : Massey Technical Update Conference
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.Edited by: Ravindran, V.
Singh, Y., Wester, TJ., Molan, AL., Ravindran, G., & Ravindran, V. (2011). Influence of whole wheat inclusion and die hole diameter on performance of nutrient utilization of broilers. Advancing Poultry Production: Proceedings of the Massey technical Update Conference. Vol. 13 (pp. 67 - 75). New Zealand: Advancing Poultry Production: Massey Technical Update Conference
[Conference Paper in Published Proceedings]Authored by: Wester, T.
Singh, Y., Wester, TJ., Molan, AL., Ravindran, G., & Ravindran, V. (2011). Influence of whole wheat inclusion and die hole diameter on performance and nutrient utilization of broilers. Proceedings of the Massey Technical Update Conference 2011. Vol. 13 (pp. 67 - 75). New Zealand: Advancing Poultry Production
[Conference Paper in Published Proceedings]Authored by: Ravindran, V., Wester, T.
Wester, TJ., Weidgraaf, K., Hekman, M., Cave, NJ., & Tavendale, MH. (2011). Effect of glucose infusion and dietary protein level on urea production in the domestic cat. In Journal of Animal Science Vol. 89 (pp. 287 - 288).
[Conference Abstract]Authored by: Wester, T.
Wester, TJ., Weidgraaf, K., Hekman, M., Cave, NJ., & Tavendale, MH. (2011). Effect of dietary starch level on protein metabolism in domestic cats. In Journal of Animal Science Vol. 89 (pp. 287 - 287).
[Conference Abstract]Authored by: Wester, T.
Abdollahi, M., Thomas, DV., Wester, T., Ravindran, GR., & Ravindran, VR. (2011). Effects of a commercial pellet binder and moisture addition on pellet quality and, the performance and nutrient utilisation of broilers. Proceedings of the Australian Poultry Science Symposium. Vol. 22 (pp. 61 - 64). Australia: 22nd Annual Australian Poultry Science Symposium
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, M., Wester, T., Thomas, D., Ravindran, GR., & Ravindran, VR. (2011). Influence of feed form and conditioning temperature on the performance and nutrient utilisation of broiler starters fed wheat-based diet. Proceedings of the 22nd Annual Australian Poultry Science Symposium. Vol. 22 (pp. 209 - 211). Australia: 22nd Annual Australian Poultry Science Symposium
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, V., Ravindran, G., Wester, TJ., & Thomas, DV. (2010). Influence of conditioning temperature and feed form on the nutrient utilisation and the performance of broilers fed wheat-based diets. In V. Ravindran (Ed.) Proceedings of the Massey Technical Update Conference. Vol. 12 (pp. 67 - 76). : Massey Technical Update Conference
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.Edited by: Ravindran, V.
Abdollahi, MR., Ravindran, V., Ravindran, G., Thomas, DV., & Wester, TJ. (2010). Influence of conditioning temperature on pellet quality and the performance and nutrient utilisation of broilers fed maize- and sorghum-based diets. In R. Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 70 (pp. 272 - 274). : 70th Conference Massey University
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Singh, Y., Wester, TJ., Ravindran, G., & Ravindran, V. (2010). Performance, nutrient utilization and gizzard development of broiler starters fed diets containing ground or whole corn. In JOURNAL OF DAIRY SCIENCE Vol. 93 (pp. 651 - 651). : ELSEVIER SCIENCE INC
[Conference Abstract]Authored by: Ravindran, V., Wester, T.
Abdollahi, M., Ravindran, VR., Ravindran, GR., Wester, T., & Thomas, D. (2010). Brief communication: Influence of conditioning temperature on pellet quality and the performance and nutrient utilisation of broilers fed maize- and sorghum-based diets. Proceedings of the New Zealand Society of Animal Production. Vol. 70 (pp. 272 - 274). New Zealand: New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Ravindran, V., Wester, T.
Singh, Y., Wester, T., Ravindran, GR., & Ravindran, VR. (2010). Brief communication: Influence of whole maize feeding on the performance of broiler starters. Proceedings of the New Zealand Society of Animal Production. Vol. 70 (pp. 269 - 271). New Zealand: New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Ravindran, V., Wester, T.
Abdollahi, MR., Ravindran, GR., Wester, TJ., Thomas, DV., & Ravindran, VR. (2009). Conditioning temperature effects in maize- and sorghum-based diets. In VR. Ravindran (Ed.) Proceedings of the Advancing Poultry Production: Massey Technical Update Conference. (pp. 36 - 44). New Zealand: Advancing Poultry Production: Massey Technical Update Conference
[Conference Paper in Published Proceedings]Authored by: Abdollahi, M., Ravindran, V., Wester, T.
Wester, TJ., Weidgraaf, K., Ugarte, CE., & Tavendale, M. (2008). Effect of dietary protein level on urea production and protein turnover in the adult cat (Felis catus). In Journal of Animal Science Vol. 86 (pp. 213 - 213). : American Society of Animal Science
[Conference Abstract]Authored by: Weidgraaf, K., Wester, T.
Wester, TJ., Weidgraaf, K., & Forsyth, SF. (2006). Measurement of whole body protein turnover in the adult cat (Felis catus). In FASEB JOURNAL Vol. 20 (pp. A1045 - A1045). , Experimental Biology 2006 Meeting: FEDERATION AMER SOC EXP BIOL
[Conference Abstract]Authored by: Weidgraaf, K., Wester, T.
Wester, TJ., Morel, PC., & Shilton, AN. (2005). Reducing nitrogen and phosphorus excretion through diet manipulation. (pp. 231 - 232). , 10th Biennial Conference of the Australasian Pig Science Association Werribee, VIC: Australasian Pig Science Association
[Conference Abstract]Authored by: Morel, P., Shilton, A., Wester, T.
Shilton, AN., Morel, PC., & Wester, TJ. (2003). Waste yield ratios from a New Zealand pig unit. Vol. IX (pp. 159). , Manipulating Pig Production IX: Proceedings of the Ninth Biennial Conference of the Australasian Pig Science Association Werribee, VIC: Australasian Pig Science Association
[Conference Abstract]Authored by: Morel, P., Shilton, A., Wester, T.
Wester, TJ., Morel, PC., & Shilton, AN. (2002, May). Reducing nutrient flow from a pig unit: A Sustainable farming fund project. Presented at Advancing Pork Production Seminar: New Zealand Pork Industry Key Issues and Massey Research Updates. Palmerston North, NZ.
[Conference Oral Presentation]Authored by: Morel, P., Shilton, A., Wester, T.
Morel, PCH., Meyer, P., Wester, TJ., & Purchas, RW. (2001). Use of piglets to assess meat iron bioavailability. In MANIPULATING PIG PRODUCTION VIII, PROCEEDINGS Vol. 8 (pp. 40 - 40). , 8th Biennial Conference of the Australasian-Pig-Science-Association: AUSTRALASIAN PIG SCIENCE ASSOC
[Conference Abstract]Authored by: Morel, P., Wester, T.
Wester, TJ., Vazquez Anon, M., Parker, D., Dibner, J., Calder, AG., & Lobley, GE. (2000). Synthesis of methionine (Met) from 2-hydroxy-4-methylthio butanoic acid (HMB) in growing lambs. In Journal of Animal Science Vol. 78 (pp. 269 - 269). Savoy, IL: American Society of Animal Science
[Conference Abstract]Authored by: Wester, T.
Wester, TJ., Vazquez Anon, M., Parker, D., Dibner, J., Calder, AG., & Lobley, GE. (2000). Metabolism of 2-hydroxy-4-methylthio butanoic acid (HMB) in growing lambs. In Journal of Animal Science Vol. 78 (pp. 268 - 269). Savoy, IL: American Society of Animal Science
[Conference Abstract]Authored by: Wester, T.

Supervision and Teaching

Summary of Doctoral Supervision

Position Current Completed
Co-supervisor 3 4

Courses Coordinated

Current Doctoral Supervision

Co-supervisor of:

  • Mukti Barua - Doctor of Philosophy
    Age-related metabolisable energy and amino acid digestibility values of feed ingredients for broiler chickens
  • Nipuna Perera - Doctor of Philosophy
    Influence of feed processing and enzyme supplementation on performance, nutrient utilization and gut morphology of poultry fed barley-based diets
  • Becca Leung - Doctor of Philosophy
    Improving Outcomes in Long-Stay Hospitalised Patients

Completed Doctoral Supervision

Co-supervisor of:

  • 2017 - Brigitte Schwendel - Doctor of Philosophy
    Differentiation between organic and conventionally produced milk in pasture based farming systems
  • 2013 - Yashpal Singh - Doctor of Philosophy
    Whole grain inclusion in poultry diets: Effects on performance, nutrient utilisation, gut development, caecal microflora profile and coccidiosis challenge
  • 2011 - Mohammadreza Abdollahi - Doctor of Philosophy
    Influence of feed processing on the performance, nutrient utilisation and gut development of poultry and feed quality
  • 2007 - Sarah Todd - Doctor of Philosophy
    Metabolism of Selenium in Cats and Dogs

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