A5077403958- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Meat and Animal Product Quality
- Genetic Mapping and Diversity in Plants and Animals
- Agriculture Sustainability and Environmental Impact
- Effects of Environmental Stressors on Livestock
- Agriculture and Farm Safety
- Soil and Water Nutrient Dynamics
- Animal Behavior and Welfare Studies
- Wheat and Barley Genetics and Pathology
- Mollusks and Parasites Studies
- Aquaculture Nutrition and Growth
- Biodiesel Production and Applications
- Plant nutrient uptake and metabolism
Murdoch University
2022-2023
University of New England
1997
Suboptimal reproductive performance of maiden (primiparous) ewes remains a source inefficiency for the Australian sheep industry. However, extent and causes poorer on farms are not well understood. Here, we show relative to their multiparous counterparts same across Australia using cohort survey. The difference in marking rate non-Merino ewe lambs compared was 58% (74 vs. 132%; p < 0.001), this attributable 50% (109 159%; 0.001) 16% lamb survival (67 83%; 0.001). Merino two-tooth lambing...
This study evaluated the impacts of management body condition score (BCS) between pregnancy scanning and lamb marking on mortality triplet-bearing ewes their lambs at 19 research sites across Southern Australia. Triplet-bearing Maternal (crossbred or composite) Merino breed were randomly allocated to treatment an average 97 days from start joining: High Low BCS. The BCS individual was assessed scanning, pre-lambing (average 137 joining) 165 end joining), ewe marking, recorded for each mob....
Industry consultation in Australia revealed that the potential impact of mob size ewes during lambing on survival triplet-born lambs was an important research priority. Previous has demonstrated smaller sizes at improve single- and especially twin-born lambs, regardless ewe stocking rate. Therefore, we hypothesised triplet-bearing mobs, rate, will increase their lambs. Research sites were established 12 commercial sheep farms across southern between 2019 2021. One farm used Merinos whilst...
Feed intake, methane and feed efficiency have important genetic correlations with growth, carcase weights mature size that need to be considered when breeding for production whilst reducing requirements in the Australian sheep industry. Live weight, fat muscle significant antagonistic relationships which may make simultaneous selection traits and, growth meat quality slower. For example, selecting animals grow faster is known reduce meat-eating quality. Therefore, we estimated phenotypic...