A5048806703- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Animal Behavior and Welfare Studies
- Genetic Mapping and Diversity in Plants and Animals
- Effects of Environmental Stressors on Livestock
- Animal Nutrition and Physiology
- Human-Animal Interaction Studies
- Meat and Animal Product Quality
- Cardiac electrophysiology and arrhythmias
- Cardiovascular Effects of Exercise
- Pasture and Agricultural Systems
- Wildlife Ecology and Conservation
- Veterinary Equine Medical Research
- Cardiac Arrest and Resuscitation
- Genetics and Plant Breeding
- Adipose Tissue and Metabolism
- Bee Products Chemical Analysis
- Pharmacological Effects and Assays
- Agriculture and Farm Safety
- Rangeland Management and Livestock Ecology
- Livestock Management and Performance Improvement
- Veterinary Pharmacology and Anesthesia
- Hair Growth and Disorders
- Soil Mechanics and Vehicle Dynamics
The University of Adelaide
2015-2024
South Australia Pathology
2023
Migration Institute of Australia
2021
Cooperative Research Centre for Beef Genetic Technologies
2016-2017
Australian Centre for Disease Preparedness
2017
Agricultural Institute
2017
Animal Welfare Institute
2017
Murdoch University
2016
Poultry CRC
2015
University of New England
2010-2014
Despite the well-known benefits of omega-3 (n-3) polyunsaturated fatty acid (PUFA) supplementation on human health, relatively little is known about effect n-3 PUFA intake fertility. More specifically, aim this study was to determine how oocyte and preimplantation embryo development might be influenced by supply understand possible mechanisms underlying these effects. Adult female mice were fed a control diet or high in long-chain PUFAs for 4 wk, ovulated oocytes zygotes collected after...
Data on lamb survival and associated traits involving records from 15 192 lambs, 6308 dams 284 sires the Sheep CRC’s Information Nucleus were studied. Lamb to 3 days of age weaning was 85 80%, respectively, heritability (±s.e.) 0.014 ± 0.010 0.010, respectively. Of 14 recorded at birth, time taken for bleat, rectal temperature crown–rump length had highest genetic correlations with (–0.43 0.32, 0.56 0.33 –0.38 0.36, respectively). Under selection a multi-trait objective including net...
Lamb mortality represents reproductive wastage and an animal welfare concern. While lambs are thought to be at a thermogenic advantage following birth in comparison other species, death from exposure can still major contributor lamb mortality, largely because of the inclement conditions often prevailing lambing. For this reason, thermogenesis has been studied extensively neonatal lambs. Heat is produced by shivering non-shivering thermogenesis. The latter heat generated metabolism brown...
Behavioural indicators of affective state, including burrowing, clinical scores and the Mouse Grimace Score have not yet been validated in mouse models chronic gastrointestinal disease. Additionally, a comparison these methods has characterised. This study aimed to determine which behavioural assessment was optimal indicator disease, evidenced by correlation with clinically-assessed measures, an azoxymethane (AOM)/dextran sulphate sodium (DSS) model colitis-associated colorectal cancer....
Cow bodyweight gain, calf weaning weight, feed intake and maternal productivity of 500 Angus cows, in 64 replicate groups, were measured over three parities at two locations (Struan Vasse) as part the Beef CRC Maternal Productivity Project. The cows sourced heifers from top bottom 10% BREEDPLAN Rib Fat EBV (High-Fat Low-Fat), High Low residual (RFI) selection lines (High-RFI Low-RFI). Each four genotypes run under High- Low-Nutrition (measured on offer) both sites. High-Fat 7% more efficient...
Abstract Background Sudden cardiac death (SCD) is an important cause of exercise‐associated fatalities in Thoroughbred racehorses. Equine deaths share similarities with human athletes that result from inherited disease. Whilst genetic causes have been postulated horses, these not confirmed and heritability SCD has previously estimated Objectives To determine the a sample population Study design Retrospective case–control study. Methods Steward post‐mortem reports racehorses Australia between...
Australian seedstock cattle breeders have expressed concerns that while there has been genetic improvement in feedlot and abattoir performance of cows, it could led to a decline maternal productivity, especially under variable nutritional conditions. This paper describes substantial project with two components designed address these issues. The first sub-project was monitor bodyweight composition 7760 young Angus Hereford cows as they experience physiological states (pregnancy lactation)...
Animal welfare legislation in South Australia underwent amendments 2008, where all the maximum penalties for animal offences were doubled. This commitment to increased arguably provides evidence of legislature's intent with respect penalties. Studies have speculated that legislative behind is not being reflected courts. interdisciplinary research sought gain confirm or disprove these speculations, by quantifying average custodial sentence and monetary fine handed down court before after 2008...
This experiment evaluated the productivity of 500 Angus cows that differed in genetic merit for either subcutaneous rib fat depth (Fat) or residual feed intake (RFI) based on estimated breeding values (EBVs) and managed under two levels nutrition. Reproductive rate over four calving opportunities mature growth performance progeny to weaning was assessed. Level nutrition significantly affected all body composition traits both Fat RFI line cows. Cows High-Nutrition were 14–16% heavier (P <...
The pregnancy rate of heifers affects the efficiency and profitability beef herds. Heifers extreme in rib fatness (Fat) or post-weaning residual feed intake (RFI) estimated breeding values (EBVs) were evaluated for their rates at two locations southern agricultural regions Australia (Struan Vasse) as part Beef Cooperative Research Centre Maternal Productivity Project. divergent Fat (High-Fat Low-Fat) had differences fat depth pre-joining 12/13th (4.4 mm vs 3.5 mm) P8 rump site (6.1 4.8 mm)....
Animal welfare is not included in the Australian Constitution, rendering it a residual power of states and territories. Commentators have suggested that inconsistencies exist between state territory statutes, uniform approach would be beneficial. However, there has been no comprehensive assessment nature or extent these purported inconsistencies. This review addresses this gap by providing state-by-state comparison animal protection statutes based on key provisions. Utilizing systematic...
Crimp, a distinguishing feature of sheep fibres, significantly affects wool value, processing and final fabric attributes. Several explanations for fibre bending have been proposed. Most concentrate on relative differences in the physicochemical properties cortical cells, which comprise bulk fibre. However, associations between crimp are not consistent may reflect underlying causation curvature (FC). We formulated mechanistic model shape is dictated primarily by degree asymmetry cell supply...
Objective To measure the prevalence of internal tandem duplications (ITDs) in exon 11 proto‐oncogene C‐KIT a sample Australian cutaneous canine mast cell tumours (MCTs) drawn from general practice and to evaluate relationships between tumour mutation status prognostic factors including signalment, histological grade, anatomical location size. Methods ITDs were detected by PCR DNA extracted formalin‐fixed, paraffin‐embedded MCTs sourced three veterinary diagnostic laboratories Adelaide...
We tested the hypothesis that provision of enrichment in form blocks during sucker and weaner phases would affect behaviour pigs. measured performance pigs an open field/novel object test, a maze executive function test cortisol response after exposure to field test. The altered all three tests these changes suggest increased willingness explore possibly ability learn. behavioural highlighted young have capacity learn complex tasks. Our findings support notion benefits cannot be evaluated by...
This paper reports a subset of results from the Beef Cooperative Research Centre-funded Maternal Productivity Project. research aimed to describe response Angus cows different and divergent genotypes variable nutritional environments over five breeding seasons. Cows selected for divergence in either fat depth (HFat vs LFat) or residual feed intake (RFI: HRFI LRFI) based on mid-parent estimated values (EBV) those traits were allocated replicate groups high low treatments at two sites, namely...
The development of the follicle population in Merino sheep skin was studied from 30 days pre-partum to 112 post-partum single- and twin-born lambs. total number primary follicles estimated density surface area did not change over this period, while secondary increased Day 28 singles 56 twins. Twins had 14% fewer than singletons (P < 0.001), largely reflecting a bodyweight (hence area) difference 10%, with little > 0.05). Immediately there 36% decrease 0.0001) ratio (S/P) twin lambs,...
The Australian sheep industry has historically made rapid advances in the quality and quantity of meat wool through genetic improvement, but unfortunately, maternal performance, i.e. number lambs weaned, is well below desired levels. aim present paper to investigate potential select for increased weight fat across production cycle improve performance. analysis explores score breeding ewes during ‘tough’ periods (i.e. when nutrient requirements are not met by pasture), preparing ewe upcoming...
A sustainable workforce is important for the veterinary profession to meet demands of society. To maintain a workforce, it has been recommended retain clinicians. However, there seems be an increasing issue with retention veterinarians in clinical practice. In following study, researchers sought understand associations between demographic and work-related factors attrition from Responses online cross-sectional survey 881 current former Australian clinicians were analysed. logistic regression...
The potential for adopting a genetic solution to protect sheep from blowfly strike on the breech was investigated in flock of that contained several animals expressing trait characterised by low wool coverage over and through wide channel anus udder or scrotum. A scoring system (1, bare 5, woolly) developed used determine heritability its phenotypic correlations with other traits importance enterprise. In comparison woolly breeches, skin bareness score density follicles producing short,...