Search Results - "Williamson, NB"

Susceptibility to antimicrobials of mastitis-causing Staphylococcus aureus, Streptococcus uberis and Str. dysgalactiae from New Zealand and the USA as assessed by the disk diffusion test by Petrovski, KR, Grinberg, A, Williamson, NB, Abdalla, ME, Lopez-Villalobos, N, Parkinson, TJ, Tucker, IG, Rapnicki, P

“…Objective To compare the antimicrobial susceptibility patterns of three common mastitis pathogens (Staphylococcus aureus, Streptococcus uberis and Str…”
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The ability of four strains of Streptococcus uberis to induce clinical mastitis after intramammary inoculation in lactating cows by Notcovich, S, deNicolo, G, Williamson, NB, Grinberg, A, Lopez-Villalobos, N, Petrovski, KR

“…AIM: To compare the ability of four strains of Streptococcus uberis at two doses to induce clinical mastitis in lactating dairy cows after intramammary…”
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The incidence and aetiology of clinical bovine mastitis on 14 farms in Northland, New Zealand by Petrovski, KR, Heuer, C, Parkinson, TJ, Williamson, NB

“…AIM: To estimate the incidence of clinical mastitis and the frequency of isolation of mastitis-causing organisms from clinical cases in one lactation season…”
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Causes of abortion on New Zealand dairy farms with a history of abortion associated with Neospora caninum by Weston, JF, Heuer, C, Parkinson, TJ, Williamson, NB

“…AIM: To investigate the cause of abortion in cows from farms with a history of abortion associated with Neospora caninum . METHODS: Cows and primiparous…”
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Culture results from milk samples submitted to veterinary diagnostic laboratories from August 2003 to December 2006 in New Zealand by Petrovski, KR, Williamson, NB, Lopez-Villalobos, N, Parkinson, TJ, Tucker, IG

“…AIMS: To determine the pattern of isolation of major mastitis-causing organisms isolated from milk samples submitted to five veterinary diagnostic laboratories…”
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Use of Liveweight Change as an Indicator of Oestrus in a Seasonally Calving, Pasture‐Fed Dairy Herd by Alawneh, JI, Stevenson, MA, Williamson, NB, Lopez‐Villalobos, N

“…This was an observational study of 828 lactations in 542 mixed‐age dairy cows that calved seasonally in a single, pasture‐fed herd in New Zealand in 2008 and…”
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The use of PCR to detect Neospora caninum DNA in the blood of naturally infected cows by Okeoma, C.M, Williamson, N.B, Pomroy, W.E, Stowell, K.M, Gillespie, L

“…Twelve 2-year old heifers in their fifth month of gestation when pregnancy tested were used in this study. Six heifers aborted at approximately 4 months of…”
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Prevalence of antibodies to Neospora caninum in dogs of rural or urban origin in central New Zealand by Antony, A, Williamson, NB

“…AIM: To investigate the seroprevalence of Neospora caninum infection in populations of dogs from dairy farms, sheep/beef farms and urban areas in the central…”
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Neospora caninum: Quantification of DNA in the blood of naturally infected aborted and pregnant cows using real-time PCR by Okeoma, C.M., Stowell, K.M., Williamson, N.B., Pomroy, W.E.

“…This study quantified Neospora caninum DNA in the blood and brain of pregnant and aborted heifers by monitoring PCR product formation in real-time using SYBR…”
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A longitudinal study of Neospora caninum infection on a dairy farm in New Zealand by Pfeiffer, D.U, Williamson, N.B, Reichel, M.P, Wichtel, J.J, Teague, W.R

“…A 600-cow New Zealand dairy herd experienced an abortion storm in 1997 and was monitored (blood sampling at about 3-month intervals) from May 1997 until…”
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Comparison of a camera-software system and typical farm management for detecting oestrus in dairy cattle at pasture by Alawneh, JI, Williamson, NB, Bailey, D

“…AIM: To compare the sensitivity, specificity, predictive values and accuracy of detection of oestrus using a novel oestrus detection-strip (ODS) and a…”
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Associations between pregnancy outcome and serological response to Neospora caninum among a group of dairy heifers by Weston, JF, Williamson, NB, Pomroy, WE

“…AIM: To monitor pregnancy in a group of rising 2-year-old dairy heifers on a farm on which abortion due to Neospora caninum was known to occur in previous…”
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Isolation and molecular characterisation of Neospora caninum in cattle in New Zealand by Okeoma, CM, Williamson, NB, Pomroy, WE, Stowell, KM, Gillespie, LM

“…AIM: To isolate Neospora caninum from the brains of naturally infected cattle and use molecular techniques to characterise the isolates. METHODS: Neospora…”
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Recent advances in understanding the epidemiology of Neospora caninum in cattle by Antony, A, Williamson, NB

“…INTRODUCTION: Neospora caninum is the most frequently diagnosed cause of cattle abortion in New Zealand and is an important pathogen worldwide. The parasite…”
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Recognition patterns of Neospora caninum tachyzoite antigens by bovine IgG at different IFAT titres by Okeoma, C. M., Williamson, N. B., Pomroy, W. E., Stowell, K. M.

“…SUMMARY This study describes qualitative and quantitative antibody response in cows naturally infected with Neospora caninum. The study was carried out with…”
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Genomic typing of Streptococcus uberis isolates from cases of mastitis, in New Zealand dairy cows, using pulsed-field gel electrophoresis by Douglas, Vicki L, Fenwick, Stan G, Pfeiffer, Dirk U, Williamson, Norman B, Holmes, Colin W

“…Three hundred and forty-two Streptococcus uberis isolates were cultured from milk samples from subclinical and clinical cases of dairy cattle mastitis. The…”
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Effect of intraruminal monensin capsules on reproductive performance and milk production of dairy cows fed pasture by Hayes, D P, Pfeiffer, D U, Williamson, N B

“…Cows from three herds calving in spring that were fed on pasture were paired by herd, production index, predicted calving date, and age. One cow from each pair…”
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Nutrient balance in the diet of spring-calving, pasture-fed dairy cows by Stevenson, MA, Williamson, NB, Russell, DJ

“…AIMS: To report the nutrient composition of pastures fed to spring-calving dairy cows in the Manawatu region of New Zealand, and describe changes in the…”
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A serosurvey for antibodies to Leptospira in dogs in the lower North Island of New Zealand by O'Keefe, JS, Jenner, JA, Sandifer, NC, Antony, A, Williamson, NB

“…AIMS: To investigate the prevalence of antibodies to endemic and exotic Leptospira serovars in samples from a serum bank, collected from dogs in the lower…”
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Patterns of follicular development during periods of anovulation in pasture-fed dairy cows after calving by McDougall, S, Burke, C.R, Macmillan, K.L, Williamson, N.B

“…The ovaries of 17 Friesian cows aged two to seven years were examined daily by transrectal ultrasound from one week after calving. The position and size of all…”
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