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
Salmonella in poultry: improving vaccine efficacy . The central aim of this project is to increase the antigenicity of aroA mutant Salmonella Typhimurium vaccines, in particular Bioproperties’ Vaxsafe® ST. Increased antigenicity will affect the gut microbiota and stimulate a stronger host immune response improving vaccine efficacy and the duration of protection against S. Typhimurium in poultry. This will ultimately reduce bacterial loads in the farm environment, mitigate downstream contaminatio ....Salmonella in poultry: improving vaccine efficacy . The central aim of this project is to increase the antigenicity of aroA mutant Salmonella Typhimurium vaccines, in particular Bioproperties’ Vaxsafe® ST. Increased antigenicity will affect the gut microbiota and stimulate a stronger host immune response improving vaccine efficacy and the duration of protection against S. Typhimurium in poultry. This will ultimately reduce bacterial loads in the farm environment, mitigate downstream contamination of the food supply chain, and reduce the number of human salmonellosis cases.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
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.
Improving the diagnosis, management and control of chlamydial infections in Australian livestock. Chlamydial diseases, such as arthritis and encephalomyelitis, are associated with significant economic losses for Australian livestock producers. Effective surveillance and management of Chlamydia infections is problematic due to: the absence of epidemiological data; the lack of an accurate and easily interpretable diagnostic test; and the lack of an available vaccine. This project aims to evaluate ....Improving the diagnosis, management and control of chlamydial infections in Australian livestock. Chlamydial diseases, such as arthritis and encephalomyelitis, are associated with significant economic losses for Australian livestock producers. Effective surveillance and management of Chlamydia infections is problematic due to: the absence of epidemiological data; the lack of an accurate and easily interpretable diagnostic test; and the lack of an available vaccine. This project aims to evaluate factors associated with chlamydial disease in Australian livestock and thereby improve on-farm diagnosis. With the concomitant development of a chlamydial vaccine for sheep, this project aims to provide veterinarians and producers with important tools to reduce the on-farm impacts of chlamydial disease.Read moreRead less
Effectiveness of Antimicrobial Stewardship in Australian Veterinary Clinics. Antimicrobial resistance threatens Australians' health, Australia's animal health and its reputation for providing safe and reliable food. Overuse of antimicrobials is a driver of antimicrobial resistance. This project aims to address the overuse of antimicrobials in animals by implementing antimicrobial stewardship in veterinary practices and developing methods of antimicrobial use surveillance. It is the first compreh ....Effectiveness of Antimicrobial Stewardship in Australian Veterinary Clinics. Antimicrobial resistance threatens Australians' health, Australia's animal health and its reputation for providing safe and reliable food. Overuse of antimicrobials is a driver of antimicrobial resistance. This project aims to address the overuse of antimicrobials in animals by implementing antimicrobial stewardship in veterinary practices and developing methods of antimicrobial use surveillance. It is the first comprehensive study to address and assess inappropriate use of antimicrobials in veterinary medicine- and is expected to improve quality use of antimicrobials by veterinarians and prolong the efficacy of antimicrobials in veterinary medicine. This presents a critical step in reducing community exposure to antimicrobial resistance.Read moreRead less
Development and Assessment of Chimaeric Feline Caliciviruses as Vaccines. Feline caliciviruses are major pathogens of cats worldwide, but current vaccines offer only incomplete protection. This project aims to develop novel recombinant vaccine strains that will generate more cross protective immunity and thus provide greater protection for vaccinated cats.
Development of tests for detection and eradication of mouse parvovirus (MPV) from laboratory mouse colonies. This project between the animal virology group at Murdoch University and the major supplier of laboratory mice to the Australian research community will produce a sensitive serological test for the detection of mouse parvovirus in laboratory mouse colonies. Widespread infection by this virus has recently been identified in mouse colonies in Australia, and eradication of the virus and fut ....Development of tests for detection and eradication of mouse parvovirus (MPV) from laboratory mouse colonies. This project between the animal virology group at Murdoch University and the major supplier of laboratory mice to the Australian research community will produce a sensitive serological test for the detection of mouse parvovirus in laboratory mouse colonies. Widespread infection by this virus has recently been identified in mouse colonies in Australia, and eradication of the virus and future surveillance requires the development of a sensitive serological test amenable to automated high throughput analysis. Eradication of this virus is critical as the virus modulates the immune system of mice and affects the results obtained in mice used for medical research.Read moreRead less
Molecular approaches to solving current and emerging problems in the epidemiology and diagnosis of Marek's disease in Australia. Marek's disease (MD) is a ubiquitous viral disease of chickens that is currently controlled in meat chickens by blanket vaccination of all chickens. However, as has happened overseas, the efficacy of the HVT vaccine being used in Australia is breaking down resulting in subclinical and clinical losses due to MD. To assist industry deal with this situation we propose to ....Molecular approaches to solving current and emerging problems in the epidemiology and diagnosis of Marek's disease in Australia. Marek's disease (MD) is a ubiquitous viral disease of chickens that is currently controlled in meat chickens by blanket vaccination of all chickens. However, as has happened overseas, the efficacy of the HVT vaccine being used in Australia is breaking down resulting in subclinical and clinical losses due to MD. To assist industry deal with this situation we propose to develop novel molecular methods for the quantification of Marek's disease viruses (MDV) in the host and the environment, to use these methods to design effective early monitoring systems for MD in broilers that predict disease and performance outcomes, and to develop an epidemiological model that will predict the spread and severity of MD as failure of vaccinal protection progresses.Read moreRead less
Superbugs and veterinary drugs: are multidrug-resistant zoonotic pathogens residing in Australian animals? Antibiotic resistance is a growing problem affecting human health that is now emerging in animals and veterinary hospitals. This project will integrate surveillance with novel treatments and preventatives to develop effective strategies to limit the impact of resistant bacteria to animal health and prevent transfer between humans and animals.