Salmonella isolated from feeds and feed ingredients during the period 1982-1988: animal and public health implications     

A M Durand  W H Giesecke  M L Barnard  M L van der Walt  H C Steyn 《The Onderstepoort journal of veterinary research》1990,57(3):175-181

The prevalence of Salmonella in southern Africa in farm feeds and by-products of animal origin during 1982-1988 was determined. Salmonella occurred in 5.18% of the farm feed samples and in 9.54% of the by-product samples. Different serovars were isolated, some only once. The findings underestimate the true prevalence of Salmonella in farm feeds and by-products, and is representative of only the most severely contaminated products. The epidemiology of salmonellosis is discussed with special reference to the importance of multiple resistance to antibiotics, the increase in the number of cases of salmonellosis worldwide and "Salmonella free" feeds and foods. More detailed research on the role of farm feeds in the epidemiology of salmonellosis is required. Efforts should be made to increase awareness of the problem, to improve quality management at farm feed production plants and to develop efficient systems to monitor the hygienic safety of feeds and foods.  相似文献   

Pharmacokinetics of Single Oral Dose Extended‐Release Levetiracetam in Healthy Cats          下载免费PDF全文

L. Barnard  H. Barnes Heller  D.M. Boothe 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2018,32(1):348-351

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Evaluation of a real-time RT-PCR panel for detection of SARS-CoV-2 in bat guano     

Eman Anis  Greg Turner  Julie C. Ellis  Andrew Di Salvo  Amanda Barnard  Susan Carroll  Lisa Murphy 《Journal of veterinary diagnostic investigation》2021,33(2):331

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Liver biopsy techniques for adult horses and neonatal foals to assess copper status   总被引：1，自引：0，他引：1  

SG PEARCE  EC FIRTH  ND GRACE  PF FENNESSY 《Australian veterinary journal》1997,75(3):194-198

Objective To evaluate standing, percutaneous, ultrasound-guided, transthoracic liver biopsy in mares, and transabdominal, laparoscopically-guided, liver biopsy under general anaesthesia in foals, as techniques for obtaining tissue for assessment of copper status. The techniques were evaluated with respect to ease of use and effect on the animal.
Procedure Twenty of 24 Thoroughbred mares and 21 of their foals were biopsied. The animals were part of a larger study of the effect of copper supplementation on copper status and the prevalence of developmental orthopaedic disease. Livers were also collected from unrelated horses and sampled to investigate the variability in the distribution of copper in liver tissue.
Result The biopsy technique caused no lasting effect on the mares, but there was an increased risk of viscus penetration associated with taking multiple biopsy cores. The use of ultrasonography to scan the target area for the liver identified four cases that were not appropriate candidates for liver biopsy, because of large intestine being located in the biopsy area. In the foals there were no serious postoperative adverse effects, nor was there any evidence of problems caused by the procedure when the abdomen was examined post-mortem at 5 months of age. In livers collected to investigate the variability of copper concentration, copper appeared to be relatively evenly distributed through the liver.
Conclusion Standing, percutaneous, ultrasound-guided, transthoracic liver biopsy in mares, and transabdominal, laparoscopically-guided, liver biopsy under general anaesthesia in foals are convenient procedures for obtaining liver tissue for assessing copper status in horses. The use of ultrasound to identify liver tissue is recommended, especially in older mares.  相似文献   

Estimation of the developmental age of the bovine fetus and newborn calf   总被引：1，自引：0，他引：1  

C Richardson  P C Jones  V Barnard  C N Hebert  S Terlecki  W V Wijeratne 《The Veterinary record》1990,126(12):279-284

Jersey cows from several herds provided 97 fetuses and 24 calves at fixed gestational intervals between 80 and 290 days after conception. The fetuses and calves were killed, weighed and measured and, after dissection, the sizes and weights of a range of skeletal and soft tissues were recorded. Six morphological measurements emerged as most suitable for the determination of developmental age in the normal fetus. By plotting their mean values and 95 per cent tolerance limits, the rates of growth and the variability of each measurement were defined. Long bone length was the most useful single measurement for predicting the developmental age of the fetus. Brain weight, bodyweight, crown-anus length and long bone length showed curvilinear growth patterns; age prediction equations derived from these measurements are complicated to use and additional simplified formulae have been derived. The number of appendicular ossification centres also had predictive value, but it could not be used to determine fetal developmental age between 100 and 160 days gestation.  相似文献   

First case of psittacine proventricular dilatation syndrome (macaw wasting disease) in Australia     

ND SULLIVAN  JT MACKIE  RI MILLER  A. GILES 《Australian veterinary journal》1997,75(9):674-674

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The after-hours mutant reveals a role for Fbxl3 in determining mammalian circadian period     

Godinho SI  Maywood ES  Shaw L  Tucci V  Barnard AR  Busino L  Pagano M  Kendall R  Quwailid MM  Romero MR  O'neill J  Chesham JE  Brooker D  Lalanne Z  Hastings MH  Nolan PM 《Science (New York, N.Y.)》2007,316(5826):897-900

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Undergraduate research. Genomics Education Partnership     

Lopatto D  Alvarez C  Barnard D  Chandrasekaran C  Chung HM  Du C  Eckdahl T  Goodman AL  Hauser C  Jones CJ  Kopp OR  Kuleck GA  McNeil G  Morris R  Myka JL  Nagengast A  Overvoorde PJ  Poet JL  Reed K  Regisford G  Revie D  Rosenwald A  Saville K  Shaw M  Skuse GR  Smith C  Smith M  Spratt M  Stamm J  Thompson JS  Wilson BA  Witkowski C  Youngblom J  Leung W  Shaffer CD  Buhler J  Mardis E  Elgin SC 《Science (New York, N.Y.)》2008,322(5902):684-685

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Animal experimentation     

Barnard ND 《Science (New York, N.Y.)》1989,245(4918):584

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First Discovery of Marine Wood-Boring Copepods     

Barnard JL  Reish DJ 《Science (New York, N.Y.)》1957,125(3241):236

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