Norman B. Williamson
Norman B. Williamson
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A study of oestrous behaviour and oestrus detection methods in a large commercial dairy herd. I. The relative efficiency of methods of oestrus detection
NB Williamson, RS Morris, DC Blood, CM Cannon
The Veterinary Record 91 (3), 50-58, 1972
Patterns of follicular development during periods of anovulation in pasture-fed dairy cows after calving
S McDougall, CR Burke, KL MacMillan, NB Williamson
Research in veterinary science 58 (3), 212-216, 1995
Effect of selenium and iodine supplementation on growth rate and on thyroid and somatotropic function in dairy calves at pasture
JJ Wichtel, AL Craigie, DA Freeman, H Varela-Alvarez, NB Williamson
Journal of dairy science 79 (10), 1865-1872, 1996
Calculating selected reproductive indices: recommendations of the American Association of Bovine Practitioners
J Fetrow, D McClary, R Harman, K Butcher, L Weaver, E Studer, J Ehrlich, ...
Journal of Dairy Science 73 (1), 78-90, 1990
A study of oestrous behaviour and oestrus detection methods in a large commercial dairy herd. II. Oestrous signs and behaviour patterns
NB Williamson, RS Morris, DC Blood, CM Cannon, PJ Wright
The Veterinary Record 91 (3), 58-62, 1972
A health program for commercial dairy herds: 1. Objectives and methods
DC Blood, RS Morris, NB Williamson, CM Cannon, RM Cannon
Australian Veterinary Journal 54 (5), 207-215, 1978
Efficacy of a Neospora caninum killed tachyzoite vaccine in preventing abortion and vertical transmission in dairy cattle
JF Weston, C Heuer, NB Williamson
Preventive veterinary medicine 103 (2-3), 136-144, 2012
Effect of intraruminal monensin capsules on reproductive performance and milk production of dairy cows fed pasture
DP Hayes, DU Pfeiffer, NB Williamson
Journal of Dairy Science 79 (6), 1000-1008, 1996
A longitudinal study of Neospora caninum infection on a dairy farm in New Zealand
DU Pfeiffer, NB Williamson, MP Reichel, JJ Wichtel, WR Teague
Preventive Veterinary Medicine 54 (1), 11-24, 2002
Genomic typing of Streptococcus uberis isolates from cases of mastitis, in New Zealand dairy cows, using pulsed-field gel electrophoresis
VL Douglas, SG Fenwick, DU Pfeiffer, NB Williamson, CW Holmes
Veterinary microbiology 75 (1), 27-41, 2000
The incidence and aetiology of clinical bovine mastitis on 14 farms in Northland, New Zealand
KR Petrovski, C Heuer, TJ Parkinson, NB Williamson
New Zealand Veterinary Journal 57 (2), 109-115, 2009
The use of PCR to detect Neospora caninum DNA in the blood of naturally infected cows
CM Okeoma, NB Williamson, WE Pomroy, KM Stowell, L Gillespie
Veterinary parasitology 122 (4), 307-315, 2004
GnRH induces ovulation of a dominant follicle in primiparous dairy cows undergoing anovulatory follicle turnover
S McDougall, NB Williamson, KL Macmillan
Animal Reproduction Science 39 (3), 205-214, 1995
The effect of pretreatment with progesterone on the oestrous response to oestradiol-17β benzoate in the postpartum dairy cow
S McDougall
Proceedings of the New Zealand Society of Animal Production 52, 157-160, 1992
Some risk factors associated with clinical lameness in dairy herds in Minnesota and Wisconsin.
SJ Wells, AM Trent, WE Marsh, NB Williamson, RA Robinson
The Veterinary Record 136 (21), 537-540, 1995
The role of Neospora caninum in three cases of unexplained ewe abortions in the southern North Island of New Zealand
L Howe, DM West, MG Collett, G Tattersfield, RS Pattison, WE Pomroy, ...
Small Ruminant Research 75 (2-3), 115-122, 2008
The effect of intra-ruminal selenium pellets on growth rate, lactation and reproductive efficiency in dairy cattle
JJ Wichtel, AL Craigie, H Varela-Alvarez, NB Williamson
New Zealand Veterinary Journal 42 (6), 205-210, 1994
Improving parity-two litter size in swine
WEM Morrow, AD Leman, NB Williamson, R Moser, C Pijoan
Journal of Animal Science 67 (7), 1707-1713, 1989
The effect of estradiol benzoate administration on estrous response and synchronized pregnancy rate in dairy heifers after treatment with exogenous progesterone
DW Hanlon, NB Williamson, JJ Wichtel, IJ Steffert, AL Craigie, DU Pfeiffer
Theriogenology 45 (4), 775-785, 1996
Neospora caninum: quantification of DNA in the blood of naturally infected aborted and pregnant cows using real-time PCR
CM Okeoma, KM Stowell, NB Williamson, WE Pomroy
Experimental parasitology 110 (1), 48-55, 2005
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