Research Topics
| D J HampsonSummaryAffiliation: Murdoch University Country: Australia Publications
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Publications
Evaluation of a novel antimicrobial polymer for the control of porcine postweaning colibacillosisD J Hampson
Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia
Aust Vet J 78:117-20. 2000..To determine whether CHEMYDERTM polymer has potential for use in the control of porcine postweaning colibacillosis (PWC)...- Influences of diet and vaccination on colonisation of pigs by the intestinal spirochaete Brachyspira (Serpulina) pilosicoliD J Hampson
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA, Australia
Vet Microbiol 73:75-84. 2000..Antibody titres in the vaccinated pigs then declined, despite intestinal colonisation by B. pilosicoli. Both groups of unvaccinated animals also failed to develop a post-infection increase in circulating antibody titres... - Influence of in-feed zinc bacitracin and tiamulin treatment on experimental avian intestinal spirochaetosis caused by Brachyspira intermediaD J Hampson
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
Avian Pathol 31:285-91. 2002..The other 20 infected birds had a significant drop in egg production, but those receiving ZnB showed a reduced colonization by B. intermedia after 3 weeks... - Dietary enzyme and zinc bacitracin reduce colonisation of layer hens by the intestinal spirochaete Brachyspira intermediaD J Hampson
Division of Veterinary and Biomedical Sciences, Murdoch University, WA 6150, Perth, Australia
Vet Microbiol 86:351-60. 2002..It was not established how the ZnB at 50 ppm and the dietary enzyme reduced the ability of the spirochaete to colonise, but it may have been by bringing about changes in the intestinal microflora and/or the intestinal microenvironment... 
PCR amplification from fixed tissue indicates frequent involvement of Brachyspira aalborgi in human intestinal spirochetosisA S Mikosza
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
J Clin Microbiol 37:2093-8. 1999..Direct sequencing of products from three of the positive samples provided further confirmation of the presence of B. aalborgi. B. aalborgi may be a more common cause of intestinal spirochetosis than has been previously thought...- Development of a multiplex-PCR for rapid detection of the enteric pathogens Lawsonia intracellularis, Brachyspira hyodysenteriae, and Brachyspira pilosicoli in porcine faecesT La
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA, Australia
Lett Appl Microbiol 42:284-8. 2006..SIGNIFICANCE AND IMPACT OF THE STUDY: The availability of a new diagnostic M-PCR will allow rapid detection and control of three key porcine enteric pathogens... - Differentiation of Serpulina species by NADH oxidase gene (nox) sequence comparisons and nox-based polymerase chain reaction testsR F Atyeo
Division of Veterinary and Biomedical Sciences, Murdoch University, WA, Australia
Vet Microbiol 67:47-60. 1999..pilosicoli strains, even at low stringency. Tests NOX1 and NOX4 should prove useful in veterinary diagnostic laboratories, whilst NOX2 and NOX3 require further refinement... - Comparative prevalences of Brachyspira aalborgi and Brachyspira (Serpulina) pilosicoli as etiologic agents of histologically identified intestinal spirochetosis in AustraliaA S Mikosza
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia
J Clin Microbiol 39:347-50. 2001..This study demonstrates that B. aalborgi is much more commonly involved in histologically identified IS in Australian patients than is B. pilosicoli. This is the first report of amplification of B. pilosicoli DNA from humans with IS... 
Diets containing inulin but not lupins help to prevent swine dysentery in experimentally challenged pigsC F Hansen
Animal Research Institute, School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
J Anim Sci 88:3327-36. 2010..05). In conclusion, this study shows that diets supplemented with highly fermentable carbohydrates from inulin protected pigs against developing swine dysentery...- Zinc bacitracin enhances colonization by the intestinal spirochaete Brachyspira pilosicoli in experimentally infected layer hensA Jamshidi
Division of Veterinary and Biomedical Sciences, Murdoch University, WA 6150, Australia
Avian Pathol 31:293-8. 2002..001). Dietary ZnB at 50 parts/10(6) therefore predisposed to colonization by B. pilosicoli. Despite colonization, no significant production differences were found between the birds in the three groups... - A cross-sectional study to investigate the occurrence and distribution of intestinal spirochaetes (Brachyspira spp.) in three flocks of laying hensN D Phillips
School of Veterinary and Biomedical Sciences, Murdoch University, South Street, Murdoch, Perth, WA 6150, Australia
Vet Microbiol 105:189-98. 2005..intermedia than the flock of intermediate age (P = 0.004), suggesting that following initial infection of individual young hens on this farm there was amplification and transmission of infection amongst members of the flock... - Increasing viscosity of the intestinal contents alters small intestinal structure and intestinal growth, and stimulates proliferation of enterotoxigenic Escherichia coli in newly-weaned pigsD E McDonald
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
Br J Nutr 86:487-98. 2001..Feed ingredients in weaning diets that excessively increase the viscosity of the intestinal digesta may be detrimental to pig health and production... - PCR detection of Brachyspira aalborgi and Brachyspira pilosicoli in human faecesA S Mikosza
Division of Veterinary and Biomedical Sciences, Murdoch University, 6150, Murdoch, WA, Australia
FEMS Microbiol Lett 197:167-70. 2001..These new faecal PCR protocols should be valuable for future studies on the epidemiology of intestinal spirochaete infections in human populations, particularly as it is not currently possible to isolate B. aalborgi from faeces... - Polymerase chain reaction for identification of human and porcine spirochaetes recovered from cases of intestinal spirochaetosisN Y Park
School of Veterinary Studies, Murdoch University, Australia
FEMS Microbiol Lett 125:225-9. 1995..coli' cells, with a detection limit equivalent to 2.5 x 10(2) cells. The reaction was used to detect and identify these spirochaetes from selective agar plates inoculated with stool specimens from infected pigs... - Adverse effects of soluble non-starch polysaccharide (guar gum) on piglet growth and experimental colibacillosis immediately after weaningD E McDonald
Division of Veterinary Sciences, Murdoch University, Perth, WA, 6150, Australia
Res Vet Sci 67:245-50. 1999..The optimal levels and type of dietary fibre used for weaner pig diets require further evaluation... - Antimicrobial susceptibility testing of Brachyspira intermedia and Brachyspira pilosicoli isolates from Australian chickensD J Hampson
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
Avian Pathol 35:12-6. 2006..pilosicoli. These data suggest that some resistance to common antimicrobials exists among intestinal spirochetes obtained from laying hens and supports the need of MIC data for clinical isolates before any treatment is considered... - Isolation of Brachyspira pilosicoli from weanling horses with chronic diarrhoeaD J Hampson
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
Vet Rec 158:661-2. 2006 - Colonization and risk factors for Brachyspira aalborgi and Brachyspira pilosicoli in humans and dogs on tea estates in Assam, IndiaM A Munshi
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
Epidemiol Infect 132:137-44. 2004..pilosicoli (P < 0.001), water obtained from a well (P = 0.006), water treatment (P = 0.03), and not having visited a doctor in the previous 12 months (P = 0.03)... - Phenotypic characteristics of Serpulina pilosicoli the agent of intestinal spirochaetosisD J Trott
School of Veterinary Studies, Murdoch University, Murdoch, Australia
FEMS Microbiol Lett 142:209-14. 1996..pilosicoli was that the human strains all utilised the pentose sugar D-xylose. These distinguishing phenotypic traits appear useful for identifying S. pilosicoli... - Experimental infection of newly weaned pigs with human and porcine strains of Serpulina pilosicoliD J Trott
School of Veterinary Studies, Murdoch University, Western Australia
Infect Immun 64:4648-54. 1996..This study confirms the role of S. pilosicoli in the etiology of PIS and provides evidence that S. pilosicoli strains of human origin have pathogenic potential in an animal model... - Survival of intestinal spirochaete strains from chickens in the presence of disinfectants and in faeces held at different temperaturesN D Phillips
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia, Australia
Avian Pathol 32:639-43. 2003..It should be relatively easy to break the cycle of infection between batches of laying birds by resting sheds for a few days, and by using disinfectants on any residual faecal matter... - Feeding a diet with decreased protein content reduces indices of protein fermentation and the incidence of postweaning diarrhea in weaned pigs challenged with an enterotoxigenic strain of Escherichia coliJ M Heo
Animal Research Institute, School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
J Anim Sci 87:2833-43. 2009..coli. Infection was associated with decreased indices of protein fermentation in the distal gastrointestinal tract but did not compromise the growth of weaner pigs in the 4-wk period after weaning... - Serologic detection of Brachyspira (Serpulina) hyodysenteriae infectionsT La
Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia, Australia
Anim Health Res Rev 2:45-52. 2001..In this review we summarize the available serologic tests for SD, and speculate on the use of recombinant BmpB as an antigen for future development of an improved serologic test for SD diagnosis... - Genetic relatedness amongst intestinal spirochaetes isolated from rats and birdsD J Trott
School of Veterinary Studies, Murdoch University, Western Australia, Australia
Lett Appl Microbiol 23:431-6. 1996..Fifteen of the rat strains were genetically and phenotypically closely related. In contrast the avian strains were genetically more heterogeneous, with pathogenic isolates located in three different genetic groups... - Increasing the viscosity of the intestinal contents stimulates proliferation of enterotoxigenic Escherichia coli and Brachyspira pilosicoli in weaner pigsD E Hopwood
Division of Veterinary and Biomedical Science, Murdoch University, South Street, Western Australia 6150, Australia
Br J Nutr 88:523-32. 2002..These pigs did not develop a natural infection with enterotoxigenic E. coli after the diet change, confirming the particular susceptibility of pigs to enterotoxigenic E. coli proliferation immediately post-weaning... - The distribution of bmpB, a gene encoding a 29.7 kDa lipoprotein with homology to MetQ, in Brachyspira hyodysenteriae and related speciesT La
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
Vet Microbiol 107:249-56. 2005..9-39.9% similarity with the d-methionine binding proteins (MetQ) of a number of pathogenic bacterial species. The bmpB gene was confirmed to be the same as a gene of B. hyodysenteriae that was recently designated "blpA"... - A monoclonal antibody reacting with the cell envelope of spirochaetes isolated from cases of intestinal spirochaetosis in pigs and humansB J Lee
School of Veterinary Studies, Murdoch University, Perth, Western Australia
FEMS Microbiol Lett 131:179-84. 1995..The mAb should prove to be a useful reagent for detection and identification of spirochaetes that are specifically associated with intestinal spirochaetosis... - Growth enhancement in broiler chickens receiving CHEMEQRTM polymeric antimicrobialD J Hampson
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
Avian Pathol 32:605-11. 2003..05) ADG than those receiving Salinomycin. CHEMEQRTM polymeric antimicrobial helped to maintain the health and to improve the growth performance of broiler chickens... - Evaluation of blood culture systems for detection of the intestinal spirochaete Brachyspira (Serpulina) pilosicoli in human bloodC J Brooke
Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia, Australia
J Med Microbiol 49:1031-6. 2000..Spirochaetaemias caused by B. pilosicoli may be unrecognised because detection time by the signal or subculture exceeds 5 days... - Carriage of intestinal spirochaetes by humans: epidemiological data from Western AustraliaC J Brook
Division of Veterinary and Biomedical Sciences, Murdoch University, WA, Australia
Epidemiol Infect 127:369-74. 2001..0034). Carriage was significantly associated with detection of faecal protozoa in both Aboriginals (P = 0.0021) and migrants (P = 0.012). PFGE results indicated that the B. pilosicoli strains were genetically diverse... - Comparison of prevalence and risk factors for faecal carriage of the intestinal spirochaetes Brachyspira aalborgi and Brachyspira pilosicoli in four Australian populationsC J Brooke
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
Epidemiol Infect 134:627-34. 2006..Both species may have pathogenic potential, but B. aalborgi appears more host-adapted than the opportunistic B. pilosicoli... - An increased ratio of dietary tryptophan to lysine improves feed efficiency and elevates plasma tryptophan and kynurenine in the absence of antimicrobials and regardless of infection with enterotoxigenic Escherichia coli in weaned pigsM M Capozzalo
Murdoch University, Murdoch, WA, Australia
J Anim Sci 90:191-3. 2012..21 and 0.26 and were not affected (P > 0.05) by infection. In conclusion, in the absence of antimicrobials, increasing the dietary Trp:Lys ratio to 0.26 improved G:F after weaning and increased plasma levels of Trp and Kyn... - Risk factors for gastric ulcers in Australian pigs at slaughterI D Robertson
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Perth, Australia
Prev Vet Med 53:293-303. 2002..8), feed a pelleted ration (OR=384) and get water from a dam rather than from a bore or river (OR=3.8). Furthermore, for every change in the ration formulation for finisher pigs, the risk of OGU increased 1.5 times... - Gastrointestinal health and function in weaned pigs: a review of feeding strategies to control post-weaning diarrhoea without using in-feed antimicrobial compoundsJ M Heo
Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
J Anim Physiol Anim Nutr (Berl) 97:207-37. 2013.... - Human intestinal spirochetosis: Brachyspira aalborgi and/or Brachyspira pilosicoli?A S Mikosza
Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia, Australia
Anim Health Res Rev 2:101-10. 2001..aalborgi, rather than B. pilosicoli, was the main spirochete species involved in these patients. This review outlines recent developments in the study of HIS and the two spirochete species, and identifies priorities for future research... - In vitro antimicrobial susceptibility of Brachyspira pilosicoli isolates from humansC J Brooke
Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
Antimicrob Agents Chemother 47:2354-7. 2003..Resistance to amoxicillin and clindamycin varied. Amoxicillin susceptibility was restored by clavulanic acid... - Genetic characterization of Mycobacterium avium isolates recovered from humans and animals in AustraliaM M Feizabadi
School of Veterinary Studies, Murdoch University, Western Australia
Epidemiol Infect 116:41-9. 1996..avium may be transmitted between birds and pigs, but there was no clear evidence of transmission to humans. The serovar of the M. avium isolates was not obviously related to their ET assignment or their PFGE type... - Intestinal spirochete infections of chickens: a review of disease associations, epidemiology and controlC P Stephens
Department of Primary Industries, Toowoomba, Queensland, Australia
Anim Health Res Rev 2:83-91. 2001..Trials are under way to test the efficacy of antimicrobials in point-of-lay chickens experimentally infected with either B. intermedia or B. pilosicoli... - Effect of diet composition on postweaning colibacillosis in pigletsL Montagne
Unité Mixte de Recherche sur le Veau et le Porc, INRA, Agrocampus Rennes, Rennes, France
J Anim Sci 82:2364-74. 2004..The addition of CMC to cooked white rice increased digesta viscosity and enhanced PWC. Consequently, this diet represents a useful model for studying this condition... - Prevalence, disease associations and risk factors for colonization with intestinal spirochaetes (Brachyspira spp.) in flocks of laying hens in north-eastern ItalyL Bano
Laboratorio di Treviso, Istituto Zooprofilattico Sperimentale delle Venezie, Treviso, Italy
Avian Pathol 37:281-6. 2008..048) and pathogenic species (P=007) than sheds housing younger chickens. A significant association (P=0.02) was found between infection with pathogenic spirochaetes and reduced egg production... - Evaluation of tiamulin and lincomycin for the treatment of broiler breeders experimentally infected with the intestinal spirochaete Brachyspira pilosicoliC P Stephens
Toowoomba Veterinary Laboratory, Animal and Plant Health Service, Department of Primary Industries, Toowoomba, QLD 4350, Australia
Avian Pathol 31:299-304. 2002..pilosicoli infection, and demonstrated the usefulness of both tiamulin and lincomycin for treatment of infection with B. pilosicoli in adult birds... - Development of a multilocus sequence typing scheme for intestinal spirochaetes within the genus BrachyspiraT Råsbäck
Department of Bacteriology, National Veterinary Institute SVA, SE 751 89 Uppsala, Sweden
Microbiology 153:4074-87. 2007..This is a first step towards establishing an MLST system for use in identifying Brachyspira species and determining relationships between individual strains and species in the genus...