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The comparative hypoxaemic effect of four alpha 2 adrenoceptor agonists (xylazine, romifidine, detomidine and medetomidine) in sheep.
In the present study, the hypoxaemic potential of four alpha 2 agonists possessing different selectivity for alpha 2 adrenoceptors and of a saline placebo was studied in five clinically healthy sheepExpand
Antimicrobial drug use and related management practices among Ontario swine producers.
A mail survey of swine producers in Ontario was undertaken during 1991 to describe the types, frequency, and motives for antimicrobial use. Two hundred operations that marketed fewer than 350 hogsExpand
Associations among antimicrobial drug treatments and antimicrobial resistance of fecal Escherichia coli of swine on 34 farrow-to-finish farms in Ontario, Canada.
Logistic regression was used to model associations between antimicrobial treatment and resistance among fecal Escherichia coli of finisher pigs at the farm level. Four sets of potential risk factorsExpand
Intraosseous gentamicin perfusion of the distal metacarpus in standing horses.
OBJECTIVE To report tissue gentamicin concentrations after intraosseous (IO) perfusion in standing horses. STUDY DESIGN In vivo study. ANIMALS OR SAMPLE POPULATION Twelve horses. METHODSExpand
Individual and group antimicrobial usage rates on 34 farrow-to-finish swine farms in Ontario, Canada.
Antimicrobial drug-use was assessed on 34 farrow-to-finish operations that marketed at least 500 hogs/yr. These operations either did not use any antimicrobials or used narrow-spectrum orExpand
Sampling considerations for herd-level measurement of faecal Escherichia coli antimicrobial resistance in finisher pigs.
The objective of this study was to determine the most efficient means of sampling faeces of finisher pigs for accurate and precise farm-level estimates of antimicrobial resistance among faecalExpand
Prevalences of resistance to seven antimicrobials among fecal Escherichia coli of swine on thirty-four farrow-to-finish farms in Ontario, Canada.
Fecal specimens were composited and a hydrophobic-grid membrane-filter method was used to measure antimicrobial resistance to ampicillin 16 micrograms/ml, carbadox 30 micrograms/ml, gentamicin 4Expand
Pharmacokinetics of enrofloxacin given by the oral, intravenous and intramuscular routes in broiler chickens.
Enrofloxacin was given to broiler chickens, 3 groups of 6 birds each, at a dose of 5 mg/kg. Routes of administration were intravenous (i.v.), intramuscular (i.m.) and oral (p.o.) and blood samplesExpand
Pharmacokinetics and toxic effects of lithium chloride after intravenous adminstration in conscious horses.
OBJECTIVE To determine the pharmacokinetics and toxic effects associated with IV administration of lithium chloride (LiCl) to conscious healthy horses. ANIMALS 6 healthy Standardbred horses. Expand
Antibiotic residue prevention methods, farm management, and occurrence of antibiotic residues in milk.
The objective of this study was to determine associations among the occurrence of antibiotic residues in bulk milk and various farm management practices. Ninety-four dairy farms were visited afterExpand