A5041341495- Ruminant Nutrition and Digestive Physiology
- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Agriculture Sustainability and Environmental Impact
- Effects of Environmental Stressors on Livestock
- Inhalation and Respiratory Drug Delivery
- Environmental Impact and Sustainability
- Pasture and Agricultural Systems
- Respiratory viral infections research
- Agroforestry and silvopastoral systems
- Botanical Research and Chemistry
- Renal function and acid-base balance
- Odor and Emission Control Technologies
- Anaerobic Digestion and Biogas Production
- Agriculture and Rural Development Research
- Cystic Fibrosis Research Advances
- Animal Diversity and Health Studies
- Pneumonia and Respiratory Infections
- Plant and fungal interactions
- Food Waste Reduction and Sustainability
- Animal Nutrition and Health
- Animal health and immunology
- Agriculture and Biological Studies
- Agricultural Systems and Practices
- Rangeland Management and Livestock Ecology
Epitaxial Technologies (United States)
2021
Teagasc - The Irish Agriculture and Food Development Authority
2010-2014
Ellinbank Observatory
2007-2012
King's College London
2006-2012
University College Dublin
2010
Universidad Nacional Agraria La Molina
2008
Columbia University
2008
Agriculture Victoria
1999-2003
University of Nottingham
2003
Dairy Australia (Australia)
1995-1999
We measured the effect of condensed tannins (CT) extracted from bark Black Wattle tree (Acacia mearnsii) on milk production, methane emissions, nitrogen (N) balance and energy partitioning lactating dairy cattle. Sixty cows, approximately 32 d in grazing ryegrass pasture supplemented with 5 kg -1 cracked triticale grain, were allocated to three treatments: Control, Tannin 1 (163 g CT ) or 2 (326 initially, reduced 244 by day 17). Cows dosed twice daily after milking for wk powdered extract...
Life-cycle assessment (LCA) is the preferred methodology to assess carbon footprint per unit of milk. The objective this case study was apply an LCA method compare footprints high-performance confinement and grass-based dairy farms. Physical performance data from research herds were used quantify a Irish system top-performing United Kingdom (UK) system. For US system, top 5% national database used. applied using same farm greenhouse gas (GHG) model for all systems. estimated on- off-farm GHG...
Despite widespread utilization of pneumococcal conjugate vaccines (PCVs) and the resultant disease reduction, development PCVs containing additional serotypes remains a public health priority due to serotype replacement shift non-vaccine serotypes. However, incorporating existing using conventional technologies has proven problematic. Immune responses individual have consistently decreased as more polysaccharide-conjugates are added carrier suppression. Using our proprietary cell-free...
The aim of this experiment was to quantify the milk production capacity cows undergoing extended lactations while fed a pasture-based diet typical those used in seasonal-calving dairying systems Victoria, Australia. One hundred twenty-five Holstein were randomly assigned 1 5 groups. Breeding progressively delayed after calving enable management groups for lactation lengths 10, 13, 16, 19, and 22 mo (equivalent intervals 12 24 mo). Cows provided with daily energy intake at least 180 MJ...
There are significant emissions of greenhouse gases (GHG) from agriculture, and a major source is enteric methane (CH 4 ) ruminants. Our study reports the impact on CH when barley grain (35% dietary dry matter (DM) was replaced by corn distillers’ dried grains with solubles (DDGS, adding 30 g fat kg -1 DM) in backgrounding diet growing beef cattle. The addition DDGS reduced (g d 19.9%, 16.4% adjusted for DM intake [g (DM intake) ] or 23.9% gross energy (GE) (% GE intake). Adding to cattle...
Summary. The effect of herbage allowance (20, 30, 40, 50, 60 and 70 kg DM/cow. day) on the consumption nutrients from milk production by cows in early lactation, was examined. experiment conducted rainfed perennial ryegrass pastures September October 1997 south-eastern Victoria, Australia. offer comprised 64% ryegrass, 21% other grasses, 1% white clover, 5% weeds 9% dead material a dry matter (DM) basis. average pregrazing height 13 cm, at an estimated mass 3.6 t DM/ha. high quality...
Summary The influence of diet quality and stage lactation on Cheddar cheese moisture yield were segregated the effects other potential variables (cow breed, milk protein genotype, age level mastitis) minimized. An experiment was conducted using cows in mid or late fed high low diets. Increased largely due to cow diet. Milk from given diets produced lower cheese. Cheese influenced by lactation. Cows always gave milks yielding most Fat recovery not results suggest that may induce changes...
The experimental objective was to determine if whole cottonseed (WCS) could be used as a dietary supplement reduce enteric methane emissions and profitably increase milk production from dairy cattle over the summer period when pasture is limited in quantity has low nutritive value. Fifty lactating cows, ~200 days milk, were randomly allocated one of two groups (control or WCS). Cows offered lucerne hay (in morning) silage afternoon) made predominantly ryegrass sward group for 5 weeks. placed...
Life cycle assessment (LCA) and the Intergovernmental Panel on Climate Change (IPCC) guideline methodology, which are principal greenhouse gas (GHG) quantification methods, were evaluated in this study using a dairy farm GHG model. The model was applied to estimate emissions from two contrasting systems: seasonal calving pasture-based total confinement system. Data used quantify these systems originated research carried out over 1-year period Ireland. genetic merit of cows modelled similar...
Determining bioequivalence for solution pressurized metered dose inhalers (pMDI) is difficult because the critical characteristics of such products are poorly defined. The aim this study was to elucidate non-aerodynamic properties emitted aerosol particles from two pMDI that determine their biopharmaceutical differences after deposition. Novel particle capture and analysis techniques were employed characterize physicochemical beclomethasone dipropionate (BDP) products: QVAR Sanasthmax. BDP...