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New Zealand Veterinary Journal

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https://www.readbyqxmd.com/read/28316260/animal-physiology-and-genetic-aspects-of-ryegrass-staggers-in-grazing-sheep
#1
C A Morris, T T Wheeler, H V Henderson, N R Towers, S H Phua
Ryegrass staggers (RGS) is a metabolic disease of herbivores, caused by the ingestion of perennial ryegrass (Lolium perenne L.) containing a fungal endophyte (Neotyphodium lolii) which produces a tremorgenic toxin, lolitrem B. RGS has a major economic impact for agriculture in New Zealand as well as internationally. Management of RGS in grazing sheep can be problematic, and there is an incomplete knowledge of the interaction between the toxin and the grazing animal. This review is focused on recent advances in understanding the molecular physiology of RGS in the affected animal as well as the influence of animal genetics on the degree of susceptibility to RGS...
March 19, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28274176/corrigendum
#2
(no author information available yet)
No abstract text is available yet for this article.
March 8, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28273429/variability-in-measurement-of-pithomyces-chartarum-spore-counts
#3
E L Cuttance, R A Laven, M Stevenson
AIMS: To examine the agreement between spore counts of Pithomyces chartarum measured in a single aliquot of wash water with counts from multiple aliquots from the same 60 g pasture sample, and between spore counts measured in an individual 60 g pasture sample with counts from three 60 g pasture samples selected from the same 200 g paddock sample. MATERIALS AND METHODS: Four Waikato dairy farms were visited once weekly from early January to late May 2013. One paddock, with 40 sampling sites, was selected per farm...
March 8, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28152335/association-between-age-and-time-from-calving-and-reported-lameness-in-a-dairy-herd-in-the-waikato-region-of-new-zealand
#4
W Mason
CASE HISTORY: During the 2014/2015 season 823 predominantly Holstein-Friesian cows calved on a pasture-based farm in the Waikato region of New Zealand. A high prevalence and recurrence rate of lameness had been noted for several years but cows feet were not routinely picked up and therapeutically trimmed. CLINICAL FINDINGS: At a farm visit in December 2015, 23 cows feet were examined and 18/23 (78%) cows had white line disease and 17/23 (74%) sole haemorrhages, as well as severely overgrown and misshapen hooves...
February 2, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28147208/systemic-granulomatous-and-haemorrhagic-syndrome-in-new-zealand-dairy-cattle
#5
T G Rawdon, K N Buckle, K E Lawrence, K G Thompson, A F Julian, B L Vaatstra, A C Johnstone, J F Weston, R A Fairley
CASE HISTORY: Cases were obtained through passive surveillance reporting by veterinary pathologists, via the Ministry for Primary Industries Exotic Pest and Disease Hotline. They included ill or dead cows that had evidence of frank haemorrhage, petechial haemorrhages on mucous membranes, wasting or dermatitis of unknown cause, and were reported between 2009-2014. Affected cows (n=16) were from nine seasonally calving dairy farms, aged ≥3 years, and were predominantly in their mid-to-late non-lactating period...
February 1, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27870922/evaluating-the-benefits-of-vaccination-when-used-in-combination-with-stamping-out-measures-against-hypothetical-introductions-of-foot-and-mouth-disease-into-new-zealand-a-simulation-study
#6
R L Sanson, T Rawdon, K Owen, K Hickey, M van Andel, Z D Yu
AIMS: To evaluate the benefits of vaccination against simulated outbreaks of foot-and-mouth disease (FMD) in New Zealand, when applied as an additional measure to stamping-out. METHODS: A simulation modelling approach was used. The study population comprised all known farms in New Zealand with FMD-susceptible livestock. Infection was seeded into three different areas of New Zealand. Transmission mechanisms included direct and indirect contacts, local spread and airborne spread...
January 11, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28043210/re-a-survey-of-antimicrobial-use-in-dairy-cows-from-farms-in-four-regions-of-new-zealand
#7
(no author information available yet)
No abstract text is available yet for this article.
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27973990/a-one-health-future-to-meet-the-amr-challenge
#8
Patricia Priest, Leah Toombs-Ruane, Jackie Benschop, Sara Burgess, Nigel French, David Murdoch
No abstract text is available yet for this article.
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27973988/characterisation-of-extended-spectrum-%C3%AE-lactamase-and-ampc-%C3%AE-lactamase-producing-enterobacteriaceae-isolated-from-companion-animals-in-new-zealand
#9
A Karkaba, A Grinberg, J Benschop, E Pleydell
AIMS: To assess the occurrence of, and characterise, extended-spectrum β-lactamase (ESBL) and AmpC β-lactamase (AmpC)-producing Enterobacteriaceae isolated by veterinary diagnostic laboratories from infection sites in companion animals in New Zealand. METHODS: Selected Enterobacteriaceae isolates were submitted by seven New Zealand veterinary diagnostic laboratories. They were isolated from infection sites in companion animals between June 2012 and June 2013, and were resistant to amoxicillin-clavulanic acid, fluoroquinolones, or any combination of two or more antimicrobials...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27943681/antimicrobial-resistance-a-global-threat-with-remarkable-geographical-differences
#10
Luca Guardabassi
No abstract text is available yet for this article.
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27927087/multidrug-resistant-enterobacteriaceae-in-new-zealand-a-current-perspective
#11
REVIEW
L J Toombs-Ruane, J Benschop, S Burgess, P Priest, D R Murdoch, N P French
In this article we review mechanisms and potential transmission pathways of multidrug resistance in Enterobacteriaceae, with an emphasis on extended-spectrum β-lactamase (ESBL)-production. This provides background to better understand challenges presented by this important group of antimicrobial resistant bacteria, and inform measures aimed at prevention and control of antimicrobial resistance in general. Humans and animals interact at various levels; household pets cohabit with humans, and other animals interact with people through direct contact, as well as through the food chain and the environment...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27842208/antimicrobial-resistance-patterns-of-bacteria-isolated-from-canine-urinary-samples-submitted-to-a-new-zealand-veterinary-diagnostic-laboratory-between-2005-2012
#12
C H McMeekin, K E Hill, I R Gibson, J P Bridges, J Benschop
AIMS: To identify and describe culture and antimicrobial resistance (AMR) patterns in bacteria isolated from canine urinary samples submitted to a New Zealand veterinary diagnostic laboratory. METHODS: Records from a veterinary diagnostic laboratory were examined for bacterial isolates cultured from canine urine samples between January 2005 and December 2012. Culture and susceptibility results were compiled with information on the age, sex and breed of dog. Repeat submissions were removed...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27817245/a-survey-of-antimicrobial-use-in-dairy-cows-from-farms-in-four-regions-of-new-zealand
#13
M Bryan, S Y Hea
AIMS: To assess the use of antimicrobials in dairy cows over three seasons in a group of dairy farms within the Southland and South Otago region, and to assess antimicrobial use in one season in a group of monitored dairy farms in four regions of New Zealand. METHODS: Sales data were collated for all antimicrobials purchased by 399, 406 and 436 dairy farms in the Southland and South Otago regions for the 2012-13, 2013-14 and 2014-15 seasons, respectively, and from 108 dairy farms in the Manawatu, Taranaki, North Canterbury, and Southland and South Otago regions of New Zealand for 2014-15...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27748166/factors-influencing-antimicrobial-prescribing-by-veterinarians-and-usage-by-dairy-farmers-in-new-zealand
#14
S McDougall, Cwr Compton, N Botha
AIMS: To determine the factors associated with the selection of antimicrobials by dairy veterinarians, and the attitudes of those veterinarians and dairy farmers to antimicrobial usage and resistance. METHODS: Facilitated focus groups of dairy farmers (n=22) and an anonymous online survey of dairy cattle veterinarians (n=206 respondents) were used to determine prescribing behaviour, factors affecting prescribing of antimicrobials, and the attitudes of veterinarians and farmers to the use of antimicrobials and the risk of antimicrobial resistance (AMR)...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27604152/characterisation-of-methicillin-resistant-staphylococcus-aureus-clinical-isolates-from-animals-in-new-zealand-2012-2013-and-subclinical-colonisation-in-dogs-and-cats-in-auckland
#15
A Karkaba, J Benschop, K E Hill, A Grinberg
AIMS: To characterise methicillin-resistant Staphylococcus aureus (MRSA) isolates from infection sites in animals in New Zealand and assess the prevalence of subclinical MRSA colonisation in dogs and cats attending veterinary clinics in Auckland. METHODS: MRSA isolates from clinical specimens obtained by the main New Zealand veterinary diagnostic laboratories between June 2012 and June 2013, were genotypically characterised by DNA microarray hybridisation analysis and spa typing...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27030313/use-of-antimicrobials-for-animals-in-new-zealand-and-in-comparison-with-other-countries
#16
COMPARATIVE STUDY
J E Hillerton, C R Irvine, M A Bryan, D Scott, S C Merchant
AIM: To describe the use of antimicrobial drugs for food animals in New Zealand, based on sales data reported to government, changes over time, and in comparison with other countries and human use. METHODS: Data were sourced from official government and industry reports covering 26 European countries, Australia, Canada, New Zealand and the United States of America in 2012, the last year data were available for all countries. The data included antimicrobial sales, and animal and human populations...
March 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27783902/re-accuracy-of-fetal-age-estimates-using-transrectal-ultrasonography-for-predicting-calving-dates-in-dairy-cows-in-seasonally-calving-herds-in-new-zealand
#17
(no author information available yet)
No abstract text is available yet for this article.
January 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27705540/periparturient-characteristics-of-mares-and-their-foals-on-a-new-zealand-thoroughbred-stud-farm
#18
C Rosales, N Krekeler, B Tennent-Brown, M A Stevenson, D Hanlon
AIMS: To describe selected periparturient variables in a sample of Thoroughbred mares and their foals on a commercial stud farm in New Zealand. METHODS: Data were collected for 969 foaling records, from 592 mares, by foaling attendants from one Thoroughbred stud farm in the Waikato region of New Zealand for the breeding seasons 2008-2013, inclusive, and collated retrospectively. The associations between mare- and foal-level variables and gestation length, time of birth (expressed as the number of hours after midday), fetal membrane retention time, time for the foal to stand and suckle after birth, and foal mortality were quantified using linear and logistic regression models...
January 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27691907/investigation-of-fetal-loss-in-ewe-lambs-in-relation-to-liveweight-changes-and-progesterone-concentrations-in-early-to-mid-gestation
#19
A L Ridler, R A Corner-Thomas, P R Kenyon, K J Griffiths
AIMS: To investigate associations between changes in liveweight and fetal loss in ewe lambs and to determine whether fetal loss was associated with concentrations of progesterone in early and mid-gestation. METHODS: Ewe lambs on two commercial sheep farms (Flock A; n=504 and Flock B; n=460) in the southern North Island of New Zealand were weighed, and body condition score was assessed, prior to breeding and throughout pregnancy. Pregnancy diagnosis was undertaken approximately 56 (PD1), 80 (PD2) and 110 (PD3) days after the start of breeding and fetal loss determined...
January 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/27691906/skeletal-deformities-associated-with-nutritional-congenital-rickets-in-newborn-lambs
#20
K E Dittmer, R E Morley, R L Smith
CASE HISTORY: A group of 545 pregnant rising 2-year-old Coopdale ewes on a Southland sheep farm were grazed over winter on a fodder beet (Beta vulgaris) crop. Subsequently, 45 out of approximately 750 lambs were born with a variety of skeletal deformities, including shortened limbs, varus and valgus angular limb deformities, palmar grade stance and cranial bowing of the carpus. Analysis of the crop showed the fodder beet contained a low percentage of phosphorus. In addition, 60 out of 460 rising 2-year-old ewes that had been grazed on the fodder beet crop as 1-year-olds had incisor abnormalities and malocclusion...
January 2017: New Zealand Veterinary Journal
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