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2007
Effect of divergent selection for wool bulk on live weight and wool characteristics in Perendale sheep, RMW Sumner, JN Clarke, and NG Cullen , Proceedings of the New Zealand Society of Animal Production, Volume 67, Wanaka, p.180-186, (2007) , (Full PDF)
2006
Effect on fleece weight of combining genes from four flocks independently selected for increased fleece weight, RMW Sumner, JN Clarke, HT Blair, NG Cullen, and HV Henderson , Proceedings of the New Zealand Society of Animal Production, Volume 66, Napier, p.195-199, (2006) , (Full PDF)
Variation in the New Zealand ram breeding industry ? results from the Poukawa progeny test, PD Muir, BC Thomson, NB Smith, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 66, Napier, p.373-376, (2006) , (Full PDF)
Variation in the New Zealand ram breeding industry û results from the Poukawa progeny test, PD Muir, BC Thomson, NB Smith, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 66, Napier, p.373-376, (2006) , (Full PDF)
2003
The benefits of across-flock analysis, JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 63, Queenstown, p.204-208, (2003) , (Full PDF)
2000
The benefits of sheep recording schemes for genetic research, JN Clarke, and DJ Garrick , Proceedings of the New Zealand Society of Animal Production, Volume 60, Hamilton, p.198-202, (2000) , (Full PDF)
Genetic parameters for improvement of dual-purpose flock productivity with constraints on mature ewe body weight, JN Clarke, JL Dobbie, KR Jones, AL Wrigglesworth, and SM Hickey , Proceedings of the New Zealand Society of Animal Production, Volume 60, Hamilton, p.203-206, (2000) , (Full PDF)
The Sheep Improvement Limited (SIL) genetic engine, SA Newman, KG Dodds, JN Clarke, DJ Garrick, and JC McEwan , Proceedings of the New Zealand Society of Animal Production, Volume 60, Hamilton, p.195-197, (2000) , (Full PDF)
Sheep industry structure and genetic improvement, DJ Garrick, HT Blair, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 60, Hamilton, p.175-179, (2000) , (Full PDF)
1999
Discriminating among animals for improved rewards from traditional meat cuts, NB Jopson, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 59, p.269-271, (1999) , (Full PDF)
Genetic effects in GrowBulk sheep, JN Clarke, RMW Sumner, and NG Cullen , Proceedings of the New Zealand Society of Animal Production, Volume 59, p.14-16, (1999) , (Full PDF)
Sex and age effects on genetic parameters for wool production and qualities, JN Clarke, JL Dobbie, KR Jones, AL Wrigglesworth, and SM Hickey , Proceedings of the New Zealand Society of Animal Production, Volume 59, p.23-26, (1999) , (Full PDF)
1997
Comparison of weight-selected Romney hoggets for growth and ultrasonic fat and eye muscle dimensions., JN Clarke, JL Dobbie, KR Jones, AE Uljee, and AL Wrigglesworth , Proceedings of the New Zealand Society of Animal Production, Volume 57, p.263-266, (1997) , (Full PDF)
Cost-benefit analysis of ultrasound scanning in meat breed ram breeding flocks., DB Binnie, JN Clarke, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 57, p.260-262, (1997) , (Full PDF)
Muscle distribution in lamb progeny from several breeds., AH Kirton, DM Duganzich, GJK Mercer, JN Clarke, JL Dobbie, and JA Wilson , Proceedings of the New Zealand Society of Animal Production, Volume 57, p.267-270, (1997) , (Full PDF)
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, Volume 55, p.104-107, (1995) , (Full PDF)
Evaluation of muscling using Texel and Oxford cross Romney and Hight Romney lambs, AH Kirton, GJK Mercer, JN Clarke, JL Dobbie, DM Duganzich, and JA Wilson , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.108-110, (1995) , (Full PDF)
Genetic parameters of lifetime wool production, JN Clarke, JL Dobbie, SM Hickey, KR Jones, and AL Wrigglesworth , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.268-271, (1995) , (Full PDF)
New sheep - a catalyst for change, JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.318-320, (1995) , (Full PDF)
Sires for more valuable lambs, JC McEwan, GH Davis, PF Fennessy, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.324-326, (1995) , (Full PDF)
Ultrasonic scanning of lamb carcasses for non-destructive carcass quality measurements, DB Binnie, RJ Farmer, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.111-113, (1995) , (Full PDF)
1994
Repeatability of seasonal wool growth in Merino Sheep, RMW Sumner, JN Clarke, AJ Pearson, and PM Speedy , Proceedings of the New Zealand Society of Animal Production, Volume 54, p.163-166, (1994) , (Full PDF)
1993
Heritability of ultrasonic fat and muscle depths in Romney sheep, JC McEwan, JN Clarke, SM Hickey, and KJ Knowler , Proceedings of the New Zealand Society of Animal Production, Volume 53, p.347-350, (1993) , (Full PDF)
Plasma prolactin in Romney sheep selected for hogget fleece weight, JN Clarke, AJ Pearson, RMW Sumner, DL Johnson, JL Dobbie, JE Wildermoth, and AL Wrigglesworth , Proceedings of the New Zealand Society of Animal Production, Volume 53, p.371-376, (1993) , (Full PDF)
1991
Analysis of lamb schedules and relative economic values of lean and fat, DF Waldron, JN Clarke, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 51, p.405-410, (1991) , (Full PDF)
Comparative wool production of Texel, Oxford Down, Finnish Landrace and Romney sheep, JL Dobbie, RMW Sumner, JN Clarke, and PM Speedy , Proceedings of the New Zealand Society of Animal Production, Volume 51, p.303-308, (1991) , (Full PDF)
Computer software to increase the efficiency of the New Zealand sheep industry, DB Binnie, JN Clarke, AC Cooke, DL Johnson, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 51, p.299-302, (1991) , (Full PDF)
Effect of selecting Perendale hoggets for loose wool bulk on fleece characteristics and wool end-product performance, RMW Sumner, DC Maddever, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 51, p.347-352, (1991) , (Full PDF)
Selection for lean and against fat in sheep, JN Clarke, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 51, p.401-404, (1991) , (Full PDF)
1989
Inheritance of loose wool bulk, RMW Sumner, JN Clarke, and DL Johnson , Proceedings of the New Zealand Society of Animal Production, Volume 49, p.297-302, (1989) , (Full PDF)
Technical aspects of the Animalplan system, DL Johnson, AL Rae, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 49, p.197-202, (1989) , (Full PDF)
Ultrasonic fat depths in Romney lambs and hoggets from lines selected for different production traits, JC McEwan, JN Clarke, MA Knowler, and M Wheeler , Proceedings of the New Zealand Society of Animal Production, Volume 49, p.113-120, (1989) , (Full PDF)
1988
Carcass composition of exotic sheep breeds, JN Clarke, AC Parratt, IC Malthus, NC Amyes, AE Uljee, and EG Woods , Proceedings of the New Zealand Society of Animal Production, Volume 48, p.53-56, (1988) , (Full PDF)
Early growth and reproduction of exotic sheep breeds - a preliminary report, WH McMillan, IC Malthus, JN Clarke, and NC Amyes , Proceedings of the New Zealand Society of Animal Production, Volume 48, p.49-52, (1988) , (Full PDF)
1986
Further development of sheep recording in New Zealand, CF Callow, JN Clarke, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 46, p.117-120, (1986) , (Full PDF)
Inheritance of foot and jaw abnormalities in sheep, RL Baker, JN Clarke, TG Harvey, and HH Meyer , Proceedings of the New Zealand Society of Animal Production, Volume 46, p.93-100, (1986) , (Full PDF)
Repeatability of reproductive performance following active immunisation of ewes, JN Clarke, JF Smith, and DL Johnson , Proceedings of the New Zealand Society of Animal Production, Volume 46, p.101-104, (1986) , (Full PDF)
1985
Implications of steroid immunisation for programmes of genetic improvement of sheep, JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 45, p.189-192, (1985) , (Full PDF)
Inheritance of loose wool bulk in Romney and Perendale sheep, ML Bigham, RMW Sumner, JN Clarke, and DL Johnson , Proceedings of the New Zealand Society of Animal Production, Volume 45, p.213-216, (1985) , (Full PDF)
1984
Dressing percentages of lambs, AH Kirton, AH Carter, JN Clarke, and DM Duganzich , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.231-234, (1984) , (Full PDF)
The effects of lamb breed, slaughter age and sex on carcass fat depth and export grade, KG Geenty, SR Young, JN Clarke, and JA Wilson , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.227-230, (1984) , (Full PDF)
Expected selection responses in lamb carcass composition and weight, GL Bennett, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.243-248, (1984) , (Full PDF)
Relationship of subcutaneous fat depth and weight changes induced by stocking rate of 4 lines of lambs, GL Bennett, JN Clarke, PV Rattray, and KS MacLean , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.215-218, (1984) , (Full PDF)
Relative performance of meat breeds of sheep in New Zealand and overseas, JN Clarke, GL Bennett, and AH Kirton , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.239-242, (1984) , (Full PDF)
Selection for productive traits on back fat depth in ewe lambs, JC McEwan, PF Fennessy, JN Clarke, SM Hickey, and MA Knowler , Proceedings of the New Zealand Society of Animal Production, Volume 44, p.249-252, (1984) , (Full PDF)
1982
A comparison of the composition and carcass quality of Kelly and Russian castrate, ram, wether and ewe lambs, AH Kirton, JN Clarke, and SM Hickey , Proceedings of the New Zealand Society of Animal Production, Volume 42, p.117-118, (1982) , (Full PDF)
Effect of ewe ovulation rate and uterine efficiency on breed and strain variation in litter size, HH Meyer, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 42, p.33-36, (1982) , (Full PDF)
Evaluation of dam breeds and crosses for export lamb production, JN Clarke, KD Atkins, KG Geenty, DL Johnson, SM Hickey, and JA Wilson , Proceedings of the New Zealand Society of Animal Production, Volume 42, p.133-136, (1982) , (Full PDF)
Level of nutrition of the ewe and lamb survival, DL Johnson, JN Clarke, KS MacLean, EH Cox, NC Amyes, and PV Rattray , Proceedings of the New Zealand Society of Animal Production, Volume 42, p.13-14, (1982) , (Full PDF)
1981
Effect of mating Romney ewe hoggets on lifetime production - Preliminary results, RL Baker, JN Clarke, and GD Diprose , Proceedings of the New Zealand Society of Animal Production, Volume 41, p.198-203, (1981) , (Full PDF)
1980
Liveweight variation in Sheeplan flocks, DL Johnson, JN Clarke, and CA Robinson , Proceedings of the New Zealand Society of Animal Production, Volume 40, p.254-257, (1980) , (Full PDF)
1978
Genetic and environmental effects on incidence and causes of lamb mortality, HH Meyer, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 38, p.181-184, (1978) , (Full PDF)
1977
Breeding Objectives for New Zealand Sheep Production, CA Morris, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 37, p.182, (1977) , (Full PDF)
A comparison of sire and dam breeds for the production of export lambs slaughtered at 3, 4?, and 6 months of age, KG Geenty, and JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 37, p.235-242, (1977) , (Full PDF)
Reproductive performance, growth and wool production of exotic sheep and their crosses with the Romney, HH Meyer, JN Clarke, ML Bigham, and AH Carter , Proceedings of the New Zealand Society of Animal Production, Volume 37, p.220-229, (1977) , (Full PDF)
Technical Aspects of the National Sheep Recording Scheme (Sheeplan), JN Clarke, and AL Rae , Proceedings of the New Zealand Society of Animal Production, Volume 37, p.183-197, (1977) , (Full PDF)
1976
The effect of level of nutrition on the productivity of sheep of different genetic origin, JP Joyce, JN Clarke, KS MacLean, RJ Lynch, and EH Cox , Proceedings of the New Zealand Society of Animal Production, Volume 36, p.170-178, (1976) , (Full PDF)
1974
Comparison of pen and paddock systems for the pedigree mating of sheep, JN Clarke, KG Geenty, RG Bennett, GN Christensen, and JA Wilson , Proceedings of the New Zealand Society of Animal Production, Volume 34, p.23-27, (1974) , (Full PDF)
Sources of variation for wool, body weight and oestrous characters in Romney hoggets, RL Baker, JN Clarke, and AH Carter , Proceedings of the New Zealand Society of Animal Production, Volume 34, p.19-22, (1974) , (Full PDF)
1972
Current Levels of Performance in the Ruakura Fertility Flock of Romney Sheep, JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 32, p.99-111, (1972) , (Full PDF)
1971
Breeds of Sire for Export Lamb Production, AH Kirton, AH Carter, JN Clarke, DP Sinclair, and KE Jury , Proceedings of the New Zealand Society of Animal Production, Volume 31, p.175, (1971) , (Full PDF)
Crossing Experiments for the Utilization of Sheep Breeds in New Zealand, JN Clarke , Proceedings of the New Zealand Society of Animal Production, Volume 31, p.164-174, (1971) , (Full PDF)
1966
Hormonal synchronization of oestrus in Romney ewes during the breeding season, JN Clarke, EM Roberts, AH Carter, and AH Kirton , Proceedings of the New Zealand Society of Animal Production, Volume 26, p.107-122, (1966) , (Full PDF)
1965
Extent and nature of weight losses due to pre-slaughter fasting of lambs, AH Kirton, JN Clarke, AH Carter, and DP Sinclair , Proceedings of the New Zealand Society of Animal Production, Volume 25, p.184-194, (1965) , (Full PDF)