Development of a new diet to improve insulin sensitivity and manage weight in healthy cats. This project will determine if a low carbohydrate, moderate fat, high protein diet improves insulin sensitivity and reduces weight gain in cats compared to a typical high-carbohydrate grocery line diet. It will identify risk factors for weight gain such as increased fasting insulin concentration and will also determine which simple assessment of insulin sensitivity best correlates with insulin sensitivity ....Development of a new diet to improve insulin sensitivity and manage weight in healthy cats. This project will determine if a low carbohydrate, moderate fat, high protein diet improves insulin sensitivity and reduces weight gain in cats compared to a typical high-carbohydrate grocery line diet. It will identify risk factors for weight gain such as increased fasting insulin concentration and will also determine which simple assessment of insulin sensitivity best correlates with insulin sensitivity measured by a gold standard. This project should lead to the formulation of a diet designed to improve insulin sensitivity and minimize weight gain in cats, and allow for earlier identification of cats at risk of obesity.Read moreRead less
Early life nutrition to improve feed efficiency in commercial dairy goats. This project aims to improve the productivity and welfare and reduce resource waste in commercial dairy goat kids. The Australian dairy goat industry is expanding (~20% per annum) yet there is little research to overcome hurdles to improving milk and meat production. There is also increased societal pressure to improve sustainability, reduce waste and maintain animal welfare. By investigating nutritional methods to improv ....Early life nutrition to improve feed efficiency in commercial dairy goats. This project aims to improve the productivity and welfare and reduce resource waste in commercial dairy goat kids. The Australian dairy goat industry is expanding (~20% per annum) yet there is little research to overcome hurdles to improving milk and meat production. There is also increased societal pressure to improve sustainability, reduce waste and maintain animal welfare. By investigating nutritional methods to improve productivity of male (for meat) and female (for milk) kids, this project will generate new knowledge relevant to Australian and international goat production systems. This project will assist goat producers to make decisions that maximise animal productivity with flow on benefits to manufacturers of goat products. Read moreRead less
New Approaches to the Control of Post-Weaning Diarrhoea in Piglets. In Australia, post?weaning diarrhoea (PWD) in piglets is a major constraint to efficient and profitable production. Increasing levels of resistance to dietary antibiotics by gut pathogens such as Escherichia coli, the bacterium implicated in PWD, is a major reason for this problem. This research will identify nutritional means of controlling PWD and increasing production after weaning. This will be achieved by strategic nutritio ....New Approaches to the Control of Post-Weaning Diarrhoea in Piglets. In Australia, post?weaning diarrhoea (PWD) in piglets is a major constraint to efficient and profitable production. Increasing levels of resistance to dietary antibiotics by gut pathogens such as Escherichia coli, the bacterium implicated in PWD, is a major reason for this problem. This research will identify nutritional means of controlling PWD and increasing production after weaning. This will be achieved by strategic nutritional interventions in the pre-weaning and (or) post-weaning periods targeted at reducing bacterial pathogens in the gut. A reduction in PWD will increase the overall efficiency of pig production in Australia and reduce antibiotic use.Read moreRead less
Establishment of a viable sheep dairy industry in Australia. Australia imports some $10 million/year of sheep dairy products, and has a fledgling sheep milking industry. The industry needs practical management strategies to maximise returns from milk and lambs under Australian conditions. We also need to develop typical Australian sheep dairy products. This project will:
o investigate techniques to select dairy sheep from large unselected flocks
o examine management strategies to maximise ret ....Establishment of a viable sheep dairy industry in Australia. Australia imports some $10 million/year of sheep dairy products, and has a fledgling sheep milking industry. The industry needs practical management strategies to maximise returns from milk and lambs under Australian conditions. We also need to develop typical Australian sheep dairy products. This project will:
o investigate techniques to select dairy sheep from large unselected flocks
o examine management strategies to maximise returns from milk and lambs
o study udder morphology and milk ejection patterns in dairy sheep
o develop specialty sheep milk dairy products and
o determine their acceptance by consumers by conducting market surveys.
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Quantifying the effect of nutrient-gene interaction in utero in key tissues instrumental to productivity and sustainability of the beef industry. The cattle industry occupies 43 per cent of the land mass and provides 13 per cent of rural employment. Nutritional insult in utero affects postnatal reproductive and production traits in cattle and imposes epigenetic modifications. This project investigates the effect upon genes affecting appetite, ovarian development, adipogenesis, myogenesis and pos ....Quantifying the effect of nutrient-gene interaction in utero in key tissues instrumental to productivity and sustainability of the beef industry. The cattle industry occupies 43 per cent of the land mass and provides 13 per cent of rural employment. Nutritional insult in utero affects postnatal reproductive and production traits in cattle and imposes epigenetic modifications. This project investigates the effect upon genes affecting appetite, ovarian development, adipogenesis, myogenesis and post natal growth.Read moreRead less
How to make antibiotics in pig feed redundant, naturally. Antimicrobial resistance has become a major issue in human and veterinary medicine being partially caused by the use of in-feed antimicrobials in farm animals. This project aims to completely eliminate antimicrobials from piglet feeds. The key differential approach is based on helping the physiology of the animal rather than testing interventions against bacteria. The project will consist of developing a novel nutritional strategy of natu ....How to make antibiotics in pig feed redundant, naturally. Antimicrobial resistance has become a major issue in human and veterinary medicine being partially caused by the use of in-feed antimicrobials in farm animals. This project aims to completely eliminate antimicrobials from piglet feeds. The key differential approach is based on helping the physiology of the animal rather than testing interventions against bacteria. The project will consist of developing a novel nutritional strategy of naturally (through maternal conditioning) boosting the natural appetite and the capacity to digest in piglets early in life. The anticipated outcome is that the new peri-natal program will result in minimal bacterial proliferation and diarrhoea thus, negating the need for in-feed antimicrobials in piglets. Read moreRead less
In vitro prediction tests of fertility of frozen semen of sheep and cattle. Variation in fertility after artificial insemination (AI) of frozen semen is high and leads to economic loss. Routine assessment of the quality of frozen semen relies on crude, simple tests of motility and morphology of sperm. More sophisticated sperm ultrastructural and function tests have recently been developed, but it is not known how these tests relate to fertility in the field. In this project we will test a ran ....In vitro prediction tests of fertility of frozen semen of sheep and cattle. Variation in fertility after artificial insemination (AI) of frozen semen is high and leads to economic loss. Routine assessment of the quality of frozen semen relies on crude, simple tests of motility and morphology of sperm. More sophisticated sperm ultrastructural and function tests have recently been developed, but it is not known how these tests relate to fertility in the field. In this project we will test a range of in vitro methods of assessment of motility and morphology of sperm and compare them with fertility of frozen semen samples after AI, leading to more objective methods of semen analysis.Read moreRead less
Sustaining chicken-meat production with alternative protein sources. This project aims to secure sustainable chicken-meat production by the radical reduction or even elimination of imported soybean meal as the primary protein source in Australian broiler diets by its replacement with feed-grade amino acids and local feedstuffs. This project will expand our comprehension of starch/glucose and protein/amino acid digestive dynamics in poultry diets based on wheat, the primary feed grain in Australi ....Sustaining chicken-meat production with alternative protein sources. This project aims to secure sustainable chicken-meat production by the radical reduction or even elimination of imported soybean meal as the primary protein source in Australian broiler diets by its replacement with feed-grade amino acids and local feedstuffs. This project will expand our comprehension of starch/glucose and protein/amino acid digestive dynamics in poultry diets based on wheat, the primary feed grain in Australia; however, wheat does inherently possess nutritional disadvantages. Expected outcomes include soybean meal-free feed formulations for the Australian chicken-meat industry to enhance the affordable and environmentally viable production of chicken-meat coupled with improved bird welfare and flock health. Read moreRead less
Manipulation of the growth potential and carcass composition of domestic animal species. Finding alternatives to repeated growth hormone(GH) injection to boost production efficiency and minimise carcass fatness remains an important target for animal research. This application exploits the two novel approaches to achieve this goal through: 1. the administration of the GH releasing peptides to the neonate to imprint an enhanced GH secretory pattern and feed conversion efficiency during growth ....Manipulation of the growth potential and carcass composition of domestic animal species. Finding alternatives to repeated growth hormone(GH) injection to boost production efficiency and minimise carcass fatness remains an important target for animal research. This application exploits the two novel approaches to achieve this goal through: 1. the administration of the GH releasing peptides to the neonate to imprint an enhanced GH secretory pattern and feed conversion efficiency during growth to maturity and 2. the development of an orally active form of these peptides by conjugation with VitB12 to facilitate intestinal absorption through the VitB12 transport mechanism for delivery to the hypothalamic/pituitary axis of animals nearing maturity.Read moreRead less
Molecular basis of attenuation in live Mycoplasma vaccines. This proposal aims to use an innovative approach to address an urgent issue raised by the end users of an Australian-owned poultry vaccine with an extensive global market. Recently multiple mutations have been detected in the vaccine re-isolated from vaccinated birds in the field around the world. We will apply a combination of a novel technique for targeted mutagenesis, genome sequencing, and animal experimentations, to address the sig ....Molecular basis of attenuation in live Mycoplasma vaccines. This proposal aims to use an innovative approach to address an urgent issue raised by the end users of an Australian-owned poultry vaccine with an extensive global market. Recently multiple mutations have been detected in the vaccine re-isolated from vaccinated birds in the field around the world. We will apply a combination of a novel technique for targeted mutagenesis, genome sequencing, and animal experimentations, to address the significance of these mutations. Results will improve our understanding of the basis of attenuation of the vaccine, its mechanism of action, and provide commercial confidence in the safety of the vaccine, which is needed to support Australian Universities and Businesses, and the global poultry industry.Read moreRead less