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2014
Assessing the meat quality of venison short-loin from farmed red deer using visible-near infrared spectroscopy, CR, Craigie, RW Purchas, CA Maltin, R Roehe, and ST Morris , Proceedings of the New Zealand Society of Animal Production, 06/2014, Volume 74, Napier, p.17-22, (2014)
2010
Effect of lipid type, selenium and vitamin E on total tract nutrient digestibility in growing pigs, WGM, Nuijten, PCH Morel, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jun, Volume 70, Palmerston North, p.266-268, (2010)
Review of pork-quality studies in New Zealand, PCH, Morel, RW Purchas, and BHP Wilkinson , Proceedings of the New Zealand Society of Animal Production, Jun, Volume 70, Palmerston North, p.261-265, (2010)
2007
A comparison of carcass characteristics and meat quality for Angus, Hereford x Friesian, and Jersey x Friesian steers, RW, Purchas, and ST Morris , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 67, Wanaka, p.18-22, (2007)
2005
Effect of slaughter group and sire on carcass composition and meat quality characteristics of Texel-sired lambs, Johnson, PL, RW Purchas, and HT Blair , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 65, Christchurch, p.241-246, (2005)
Relationships between on-farm and pre-slaughter behaviour and growth and meat quality for bulls and steers, DL, Burnham, RW Purchas, and ST Morris , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 65, Christchurch, p.261-265, (2005)
2003
Conjugated linoleic and trans-vaccenic acids in grass-fed beef and lamb, TW, Knight, CA Morris, RW Purchas, and M Agnew , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 63, Queenstown, p.21-24, (2003)
2002
Ranking Romney sires on carcass value from a progeny test, Johnson, PL, RW Purchas, and HT Blair , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 62, Palmerston North, p.183-187, (2002)
2000
Differences in wool characteristics in lines of sheep with high or low levels of backfat thickness, NC, Merrick, DB Baird, JC McEwan, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 60, Hamilton, p.159-161, (2000)
A program to assess the efficiencies of sheep-meat production systems: A teaching aid, RW, Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 60, Hamilton, p.135-138, (2000)
1998
Calpain and calpastatin activity in muscle from genetic lines of lambs selected for divergent levels of fatness., JD, Morton, R Bickerstaffe, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.143-145, (1998)
Growth curves and productivity of Holstein-Friesian cows bred for heavy or light mature live weight, JG, Garcia-Muniz, CW Holmes, DJ Garrick, N Lopez-Villalobos, BW Wickham, G Wilson, IM Brookes, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.68-72, (1998)
1997
Short-Term Grain Feeding and its Effect on Carcass and Meat Quality., ST, Morris, RW Purchas, and DL Burnham , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 57, p.275-277, (1997)
Sources of variation in the ultimate pH of M. longissimus from prime steers., RW, Purchas, and BE Keohane , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 57, p.271-274, (1997)
1996
A comparison of unbred and once-bred lamb production, JB, Johnston, ST Morris, RW Purchas, SN McCutcheon, and WJ Parker , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.307-309, (1996)
Future directions for meat research and development in New Zealand, AH, Kirton, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.147-150, (1996)
Plasma carotenoid concentrations early in life can be used as a selection criterion for fat colour in heifers, AF, Death, TW Knight, RW Purchas, ST Morris, and DL Burnham , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.398-399, (1996)
Repeatabilities of blood plasma metabolites and their associations with leanness in genotypes showing a wide divergence in carcass composition, JN, Clarke, DB Binnie, JL Dobbie, KR Jones, CM Mowat, RW Purchas, and AE Uljee , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.180-183, (1996)
1995
Effects of genotype and nutrition on sheep carcass fat and eye muscle development between weaning and 14 months of age, DB, Binnie, JN Clarke, JB Clayton, CM Mowat, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 55, p.104-107, (1995)
1994
A comparison of the carcass and meat quality of Awassi-cross and Texel-cross ram lambs, IJ, Holloway, RW Purchas, MT Power, and NA Thomson , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 54, p.209-214, (1994)
A prolonged change in body composition induced by endocrine manipulation of the neonate, SN, McCutcheon, IT Kadim, GA Wickham, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 54, p.51-54, (1994)
1993
A comparison of carcass and meat characteristics and organ weights of castrate and entire male buffalo and cattle, RW, Purchas, NA Thomson, GC Waghorn, and AF Death , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 53, p.407-412, (1993)
Hormone/metabolite levels in young rams as predictors of genetic merit for backfat depth and fleeceweight, B, Kuhn, HT Blair, RW Purchas, and SN McCutcheon , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 53, p.335-338, (1993)
Relationships between objective and subjective measurements of carcass muscularity, AY, Abdullah, RW Purchas, AS Davies, and AH Kirton , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 53, p.397-402, (1993)
1992
Growth and venison production from red deer grazing either red clover or perennial ryegrass/white clover pasture, G, Semiadi, TN Barry, PR Wilson, J Hodgson, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 52, p.81-84, (1992)
The value of ultrasound in assessing the leg muscling of lambs, BG, Ward, RW Purchas, and AY Abdullah , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 52, p.33-36, (1992)
1991
Effects of immunisation against LHRH on body growth, scrotal circumference, and carcass composition in yearling Red deer stags, DO, Freudenberger, PR Wilson, RW Purchas, TN Barry, BA Moss, and TE Trigg , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 51, p.63-66, (1991)
1990
Plasma urea dilution patterns in Southdown ram lambs from high and low backfat selection lines, AY, Abdullah, RW Purchas, SN McCutcheon, and PC Van Dinther , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 50, p.105-108, (1990)
Responses in venison production to grazing pastures based upon perennial ryegrass or annual ryegrass and to immunisation against melatonin, AM, Ataja, PR Wilson, J Hodgson, RW Hoskinson, RW Purchas, H Varela-Alvarez, and TN Barry , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 50, p.279-286, (1990)
1989
Liver catalase in Southdown sheep selected for high and low backfat depth, SW, Peterson, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 49, p.143-146, (1989)
A study of early venison production from grazing red deer, AM, Ataja, PR Wilson, RW Purchas, J Hodgson, TN Barry, and RJM Hay , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 49, p.25-28, (1989)
1988
The stability of the relationship between subcutaneous fat percent in the rack and the side for Southdown ram carcasses, IT, Kadim, RW Purchas, AL Rae, and RA Barton , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 48, p.29-32, (1988)
1986
Consideration of alternative lamb drafting strategies, DJ, Garrick, RW Purchas, and ST Morris , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 46, p.49-54, (1986)
1985
The application of a lean growth index in ram breeding flocks, CJ, Dodd, GL Bennett, and RW Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 45, p.77-80, (1985)
The calculation of a simple lean-growth index for young sheep, RW, Purchas, GL Bennett, and CJ Dodd , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 45, p.73-76, (1985)
1984
Fatness of lambs grazed on 'Grasslands Maku' lotus and 'Grasslands Huia' white clover, RW, Purchas, and RG Keogh , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 44, p.219-222, (1984)
1981
The repeatability of ultrasonic fat-depth measurements made on sheep up to 18 months of age, RW, Purchas, AL Rae, RA Barton, and AD Beach , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 41, p.133-139, (1981)
1979
A comparison of the fatness of weaned and unweaned lambs, RW, Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 39, p.211-216, (1979)
1973
The Effect of Cortisol Acetate Administration on Growth and Carcass Quality of Lambs (Summary only), RW, Purchas , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 33, p.192, (1973)