Reduction of antibiotic usage in the commercial pig industry. This project intends to identify factors that make a pig enterprise more likely to use high levels of antibiotics and develop alternative, vaccination-based methods for disease control. The development of multi-drug resistance in zoonotic bacterial pathogens (e.g. Salmonella and Campylobacter spp.) in pigs has raised concerns that antimicrobial resistance can be transferred from livestock to humans. Although the epidemiology to suppor ....Reduction of antibiotic usage in the commercial pig industry. This project intends to identify factors that make a pig enterprise more likely to use high levels of antibiotics and develop alternative, vaccination-based methods for disease control. The development of multi-drug resistance in zoonotic bacterial pathogens (e.g. Salmonella and Campylobacter spp.) in pigs has raised concerns that antimicrobial resistance can be transferred from livestock to humans. Although the epidemiology to support a claim that there is a causal association between antimicrobial use in food animals and public health is complex there is universal agreement that use of antimicrobials in food animal production should be minimised. This project intends to deliver outcomes that will reduce antibiotic use on commercial pig farms.Read moreRead less
Improved biosecurity through the engineering of microbial ecosystems. This project aims to provide data and understanding that will help develop predictive models for changes in the distribution of drug-resistant bacteria, and surveillance and response programs for key biosecurity threats. Microorganisms, including commensals and pathogens, can live in complex communities in a range of environments including animal hosts. It is now known that these communities (known as microbiomes) can exert a ....Improved biosecurity through the engineering of microbial ecosystems. This project aims to provide data and understanding that will help develop predictive models for changes in the distribution of drug-resistant bacteria, and surveillance and response programs for key biosecurity threats. Microorganisms, including commensals and pathogens, can live in complex communities in a range of environments including animal hosts. It is now known that these communities (known as microbiomes) can exert a profound effect on animal health. This project seeks to understand where antimicrobial resistance genes reside in pig gut microbiotia and how they move between members of this complex microbial community, and to provide information on how probiotics may be used to reduce dependence on antibiotics.Read moreRead less
Optimising the efficacy of mycoplasma vaccines in the field. Optimising the efficacy of mycoplasma vaccines in the field. This project intends to examine the effect of antibiotic treatment, killed vaccines and immunosuppressive viruses on the protective immunity induced by a model novel vaccine against the important poultry pathogen Mycoplasma gallisepticum. The continued circulation of pathogenic mycoplasmas in intensively managed animals is a major animal health problem. Live attenuated vaccin ....Optimising the efficacy of mycoplasma vaccines in the field. Optimising the efficacy of mycoplasma vaccines in the field. This project intends to examine the effect of antibiotic treatment, killed vaccines and immunosuppressive viruses on the protective immunity induced by a model novel vaccine against the important poultry pathogen Mycoplasma gallisepticum. The continued circulation of pathogenic mycoplasmas in intensively managed animals is a major animal health problem. Live attenuated vaccines could reduce disease, but we have limited understanding of the best conditions for their use. This project will generate data to guide both use and development of live mycoplasma vaccines. It is expected to have significant impacts on animal health, welfare and production, and public health by reducing the use of antibiotics to control mycoplasmoses.Read moreRead less
Defining domains within Mycoplasma hyopneumoniae surface proteins that interact with host extracellular matrix: efficacy testing of candidate vaccines in swine. Over 90% of Australian commercial pig production facilities are affected by Mycoplasma hyopneumoniae, the causative agent of swine enzootic pneumonia. This disease causes economic losses in Australia of over $20 million per annum and up to $1 billion per annum in major swine rearing countries worldwide. This project will determine the p ....Defining domains within Mycoplasma hyopneumoniae surface proteins that interact with host extracellular matrix: efficacy testing of candidate vaccines in swine. Over 90% of Australian commercial pig production facilities are affected by Mycoplasma hyopneumoniae, the causative agent of swine enzootic pneumonia. This disease causes economic losses in Australia of over $20 million per annum and up to $1 billion per annum in major swine rearing countries worldwide. This project will determine the protective efficacy of new generation vaccines against M. hyopneumoniae, which aim to block the colonisation process and prevent disease .Read moreRead less
Identification and characterisation of Mycoplasma hyopneumoniae surface-molecules that interact with the host epithelium. Mycoplasma hyponeumoniae causes porcine enzootic pneumonia, a disease that significantly impacts swine production. Current vaccines are unable to prevent colonisation of the respiratory tract and are costly to produce and administer. The expression of microbial adhesins that mediate adherence to the extracellular matrix is considered the initial step in host colonisation for ....Identification and characterisation of Mycoplasma hyopneumoniae surface-molecules that interact with the host epithelium. Mycoplasma hyponeumoniae causes porcine enzootic pneumonia, a disease that significantly impacts swine production. Current vaccines are unable to prevent colonisation of the respiratory tract and are costly to produce and administer. The expression of microbial adhesins that mediate adherence to the extracellular matrix is considered the initial step in host colonisation for many bacterial pathogens. We propose to identify M. hyopneumoniae cell surface moleculaes that interact with components of the extracellular matrix. Targetting these cell surface molecules will lead to therapeutics that prevent disease and block colonisation, eventually eradicating the host pathogen from pig production facilities.Read moreRead less
Vaccine against leptospirosis. This project will utilise the information from the determination of the complete genome sequence of Leptospira borgpetersenii serovar Hardjobovis at Monash University. Bioinformatics analysis will be used to allow a global approach to identify all putative vaccine antigens which will be cloned, expressed and purified and their protective capacity investigated.
Immunonutrition: A novel concept to overcome gastrointestinal tract mucosal damage after weaning in pigs. A sustainable Australian pork industry relies on further reductions in costs whilst considering the enhanced health and welfare of pigs. This project will lead to more precise estimates of amino acid requirements in the post-weaning period, which will contribute to an increased efficiency of nutrient utilization and enhance the welfare of pigs recovering from the weaning process.
Understanding the molecular basis of virulence in Brachyspira hyodysenteriae to improve vaccine design. Swine dysentery is a colonic infection of pigs caused by Brachyspira hyodysenteriae. The disease is widespread in Australia and causes great economic loss. An effective vaccine is not available. This study aims to identify factors associated with the bacterium's virulence, using comparative genomic and proteomic information. Virulence factors then will be targeted and tested as recombinant vac ....Understanding the molecular basis of virulence in Brachyspira hyodysenteriae to improve vaccine design. Swine dysentery is a colonic infection of pigs caused by Brachyspira hyodysenteriae. The disease is widespread in Australia and causes great economic loss. An effective vaccine is not available. This study aims to identify factors associated with the bacterium's virulence, using comparative genomic and proteomic information. Virulence factors then will be targeted and tested as recombinant vaccine candidates. This project will result in the development of an improved vaccine to control swine dysentery in rural Australia. Control of swine dysentery through vaccination will reduce antibiotic use on infected farms and improve the productivity and competitiveness of the Australian pig industry.Read moreRead less
Proteomics and vaccine development in swine dysentery. Swine dysentery is an infectious disease of significant economic importance caused by Brachyspira hyodysenteriae. There is no effective vaccine available. This project will combine modern techniques in microbial genomics and proteomics to identify outer membrane proteins of B. hyodysenteriae and evaluate their role as candidate vaccine antigens.
Genomic sequencing and comparative genomic analysis for animal bacterial vaccine discovery. The aim of this project is to develop vaccines for the control of swine dysentery (pigs) and intestinal spirochaetosis (pigs and chickens). These infections cause important production-limiting diseases for which no effective vaccines are available. We will use whole genomic sequencing of the two causal species of intestinal spirochaetal bacteria, with a bioinformatics-based analysis of the data to identif ....Genomic sequencing and comparative genomic analysis for animal bacterial vaccine discovery. The aim of this project is to develop vaccines for the control of swine dysentery (pigs) and intestinal spirochaetosis (pigs and chickens). These infections cause important production-limiting diseases for which no effective vaccines are available. We will use whole genomic sequencing of the two causal species of intestinal spirochaetal bacteria, with a bioinformatics-based analysis of the data to identify potential cell surface structures that will be tested as the basis of new recombinant vaccines. Outcomes will include the development of new commercial products, increased institutional capacity in veterinary vaccine discovery, and ultimately improved animal health and production in rural Australia.Read moreRead less