Search Results - "Donaghy, D.J."

Pasture brome and perennial ryegrass characteristics that influence ewe lamb dietary preference during different seasons and periods of the day by García-Favre, J., Cranston, L.M., López, I.F., Poli, C.H.E.C., Donaghy, D.J., Caram, N., Kemp, P.D.

“…•Lolium perenne L. and Bromus valdivianus Phil. have asynchronous growth.•Preferential grazing by ewe lambs was assessed for L. perenne and B. valdivianus.•In…”
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Associations between peripartum lying and activity behaviour and blood non-esterified fatty acids and β-hydroxybutyrate in grazing dairy cows by Hendriks, S.J., Phyn, C.V.C., Turner, S-A., Mueller, K.R., Kuhn-Sherlock, B., Donaghy, D.J., Huzzey, J.M., Roche, J.R.

“…•Behaviour of metabolically challenged grazing dairy cows was investigated.•Metabolically challenged cows lay less and walked more before calving.•Cows…”
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Comparative evaluation of a new lactation curve model for pasture-based Holstein-Friesian dairy cows by Adediran, S A, Ratkowsky, D A, Donaghy, D J, Malau-Aduli, A E O

“…Fourteen lactation models were fitted to average and individual cow lactation data from pasture-based dairy systems in the Australian states of Victoria and…”
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Supplementation of urea to a basal pasture diet fed to dairy cows to model N-partitioning relationships by Hendriks, S.J., Lopez-Villalobos, N., Sheahan, A.J., Donaghy, D.J., Roche, J.R.

“…[Display omitted] •Urinary nitrogen from grazing cows is a major source of nitrogen losses to waterways•Nitrogen balance studies can be used to evaluate…”
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Short communication: effect of postgrazing residual pasture height on milk production by Lee, J M, Donaghy, D J, Roche, J R

“…In grazing systems, dry matter intake (DMI) and milk production have been reported to increase with increasing pasture allowance (PA). This has often led to…”
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Short communication: Responses to supplemental Saccharomyces cerevisiae fermentation product and triticale grain in dairy cows grazing high-quality pasture in early lactation by Irvine, L D, Freeman, M J, Donaghy, D J, Yoon, I, Lee, G, Roche, J R

“…Supplementing cows grazing highly digestible pasture with a Saccharomyces cerevisiae fermentation product (SCFP) was hypothesized to increase dry matter (DM)…”
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A 100-Year Review: A century of change in temperate grazing dairy systems by Roche, J R, Berry, D P, Bryant, A M, Burke, C R, Butler, S T, Dillon, P G, Donaghy, D J, Horan, B, Macdonald, K A, Macmillan, K L

“…From 1917 to 2017, dairy grazing systems have evolved from uncontrolled grazing of unimproved pastures by dual-purpose dairy-beef breeds to an intensive system…”
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Graduate Student Literature Review: Evaluating the appropriate use of wearable accelerometers in research to monitor lying behaviors of dairy cows by Hendriks, S J, Phyn, C V C, Huzzey, J M, Mueller, K R, Turner, S-A, Donaghy, D J, Roche, J R

“…Until recently, animal behavior has been studied through close and extensive observation of individual animals and has relied on subjective assessments…”
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Associations between lying behavior and activity and hypocalcemia in grazing dairy cows during the transition period by Hendriks, S J, Huzzey, J M, Kuhn-Sherlock, B, Turner, S-A, Mueller, K R, Phyn, C V C, Donaghy, D J, Roche, J R

“…Hypocalcemia is a common metabolic disorder of transition dairy cows that is considered a gateway disease, increasing the risk of other health disorders and…”
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Interaction between water-soluble carbohydrate reserves and defoliation severity on the regrowth of perennial ryegrass (Lolium perenne L.)-dominant swards by Lee, J.M, Donaghy, D.J, Sathish, P, Roche, J.R

“…A field-study was undertaken in Hamilton, New Zealand to determine if there was an interaction between water-soluble carbohydrate (WSC) reserve content and…”
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Effect of defoliation management, based on leaf stage, on perennial ryegrass (Lolium perenne L.), prairie grass (Bromus willdenowii Kunth.) and cocksfoot (Dactylis glomerata L.) under dryland conditions. 1. Regrowth, tillering and water-soluble carbohydrate concentration by Turner, L.R, Donaghy, D.J, Lane, P.A, Rawnsley, R.P

“…A field study was undertaken between April 2003 and May 2004 in southern Tasmania, Australia to quantify and compare changes in herbage productivity and…”
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Patterns of leaf and root regrowth, and allocation of water-soluble carbohydrate reserves following defoliation of plants of prairie grass (Bromus willdenowii Kunth.) by Turner, L.R, Donaghy, D.J, Lane, P.A, Rawnsley, R.P

“…This study utilized leaf stage-based defoliation intervals to describe the concentrations and contents of water-soluble carbohydrate (WSC) and nitrogen (N) in…”
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Distribution of Water-Soluble Carbohydrate Reserves in the Stubble of Prairie Grass and Orchardgrass Plants by Turner, L.R, Donaghy, D.J, Lane, P.A, Rawnsley, R.P

“…A greenhouse study was undertaken to investigate the distribution of water-soluble carbohydrates (WSC) within the lower 100 mm of 'Kara' orchardgrass (Dactylis…”
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Effect of defoliation management, based on leaf stage, on perennial ryegrass (Lolium perenne L.), prairie grass (Bromus willdenowii Kunth.) and cocksfoot (Dactylis glomerata L.) under dryland conditions. 2. Nutritive value by Turner, L.R, Donaghy, D.J, Lane, P.A, Rawnsley, R.P

“…A field experiment was undertaken between April 2003 and May 2004 in southern Tasmania, Australia, to quantify and compare changes in the nutritive value of…”
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Changes in the Physiology and Feed Quality of Prairie Grass during Regrowth by Turner, L.R, Donaghy, D.J, Lane, P.A, Rawnsley, R.P

“…Species-specific grazing management is required to maximize the potential of perennial grass species, and it follows that the optimal performance of prairie…”
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Effect of Defoliation Severity on Regrowth and Nutritive Value of Perennial Ryegrass Dominant Swards by Lee, J.M, Donaghy, D.J, Roche, J.R

“…The height or mass to which swards are defoliated can potentially affect regrowth. A field study was undertaken to determine the response of perennial ryegrass…”
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Effect of Defoliation Management on Water-Soluble Carbohydrate Energy Reserves, Dry Matter Yields, and Herbage Quality of Tall Fescue by Donaghy, D.J, Turner, L.R, Adamczewski, K.A

“…There is limited information on the effect of leaf stage based defoliation management on the regrowth of tall fescue (Festuca arundinacea Schreb.). The aim of…”
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impact of defoliation frequency and nitrogen fertilizer application in spring on summer survival of perennial ryegrass under grazing in subtropical Australia by Donaghy, D.J, Fulkerson, W.J

“…This field study investigated the effect of timing of nitrogen (N) fertilizer application in spring on the survival of grazed perennial ryegrass (Lolium…”
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