Results 61 to 70 of about 948 (186)

Ruminal motility, reticuloruminal fill, and eating patterns in steers exposed to ergovaline

Journal of Animal Science, 2019
Abstract Fescue toxicosis is problematic for growing steers, causing lower DMI and productivity when fed endophyte-infected (E+) tall fescue. A complete understanding of underlying mechanisms of how fescue toxicosis affects growing steers is lacking.
Gyuchul, Ahn, Kara, Ricconi, Suelen, Avila, James L, Klotz, David L, Harmon   +4 more
openaire   +3 more sources

Ergovaline and heat stress in New Zealand: a case study

, 2020
While it is acknowledged that heat stress can occur in New Zealand, there is currently a debate as to whether ergovaline makes an animal more susceptible to heat stress by lowering the ambient temperature at which an animal can maintain thermoneutrality (
Paul Daly (3725233), Wade Mace (383650), Donald Arthur (15405074), Lester Fletcher (15394604)   +3 more
core  

A comparison of four methods for determining pasture botanical composition

Grassland Research, Volume 4, Issue 3, Page 260-268, September 2025.
The objective of this study was to determine an accurate and efficient method for researchers and/or practitioners to monitor botanical composition. The evaluation methods included visual estimation (top left), occupancy grid (top right), point quadrat (bottom left), and step point (bottom right).
Echo E. Gotsick, S. Ray Smith, Victoria L. Stanton, Chris D. Teutsch, Jimmy C. Henning   +4 more
wiley   +1 more source

Physiological Effects of Ergot Alkaloid and Indole-Diterpene Consumption on Sheep under Hot and Thermoneutral Ambient Temperature Conditions

Animals, 2016
A controlled feeding study was undertaken to determine the physiological and production effects of consuming perennial ryegrass alkaloids (fed via seed) under extreme heat in sheep. Twenty-four Merino ewe weaners (6 months; initial BW 30.8 ± 1.0 kg) were
Michelle L. E. Henry, Stuart Kemp, Frank R. Dunshea, Brian J. Leury   +3 more
doaj   +1 more source

In Vivo Reductions in Methane and Urinary Nitrogen by Perennial Non‐Bloating Temperate Legume and Forb Functional Forages Produced in the Mountain West United States

Grass and Forage Science, Volume 80, Issue 2, April-June 2025.
ABSTRACT Ruminant livestock production is the greatest source of agricultural greenhouse gas (GHG) production, largely due to enteric methane (CH4) emissions. While the optimised feed rations used in confinement dairy and beef finishing operations can reduce CH4 emissions of individual animals compared with cattle on forage diets, the profitability of ...
Jennifer W. MacAdam, Juan J. Villalba, Sebastian Lagrange, Elizabeth K. Stewart, Lance R. Pitcher, Kathryn A. Slebodnik, Jeanette M. Norton, Jennifer R. Reeve, Yunhua Zhang, Andrea I. Bolletta, Jerrad F. Legako, Rachael G. Christensen, Sara R. Hunt   +12 more
wiley   +1 more source

A Fungal Endophyte Alters Poplar Leaf Chemistry, Deters Insect Feeding and Shapes Insect Community Assembly

Ecology Letters, Volume 28, Issue 2, February 2025.
It is already known that endophytic fungi can influence plant defence against natural enemies such as herbivorous insects. However, our understanding of the underlying mechanisms is still limited. We investigated the influence of an endophytic fungus on the metabolome of poplars and the consequences for the preference and performance of herbivorous ...
Christin Walther, Marine Vallet, Michael Reichelt, Prajakta Giri, Beate Rothe, Elina J. Negwer, Pamela Medina van Berkum, Jonathan Gershenzon, Sybille B. Unsicker   +8 more
wiley   +1 more source

Phosphorus fertiliser is associated with reduced grass grub (Costelytra giveni) fitness in Epichloë endophyte‐infected meadow fescue and perennial ryegrass

Pest Management Science, Volume 80, Issue 12, Page 6409-6423, December 2024.
Grass grub (Costelytra giveni) is a major agricultural pasture pest. This study demonstrated a decline in grass grub survival as soil Olsen P levels increased. Epichloë endophytes, such as the MaxR strain, provide protection under different phosphorus fertiliser regimes.
Katrin G. Hewitt, Rainer W. Hofmann, Olivier J. Ball, Dongwen Luo, Sarah C. Finch, Racheal H. Bryant, Alison J. Popay   +6 more
wiley   +1 more source

Comparison of ergovaline determinations between laboratories in the United States and Japan

NZGA: Research and Practice Series, 2007
Quality assurance and quality control is the foundation of any diagnostic test. The two laboratories in the United States that use HPLC to quantitate endophyte toxins in tall fescue (Festuca arundinacea) and perennial ryegrass (Lolium perenne) are Oregon State University (OSU) and University of Missouri (MU).
Morrie Craig, G. Rottinghaus, K. Walker, E. Ishikuro   +3 more
openaire   +2 more sources

Epichloë fungal endophytes – a vital component for perennial ryegrass survival in New Zealand

New Zealand Journal of Agricultural Research, Volume 67, Issue 4, Page 451-468, August 2024.
ABSTRACT Pastoral agriculture underpins the New Zealand economy. Its success in generating export income is due to a mild and moist temperate climate, productive soils, innovative farmers supported by an effective research and development system, and an energy efficient production system based on year‐round grazing.
John R. Caradus
wiley   +1 more source

OCCURRENCE OF Neotyphodium AND Epichloë FUNGI IN MEADOW FESCUE AND RED FESCUE IN POLAND AND SCREENING OF ENDOPHYTE ISOLATES AS POTENTIAL BIOLOGICAL CONTROL AGENTS

Acta Scientiarum Polonorum: Hortorum Cultus, 2013
Neotyphodium and Epichloë endophytes often influence beneficially on the host plant. Thus, could be used as a biological factor enhancing grass growth and resistance to stress factors.
Dariusz Pańka, Małgorzata Jeske, Mikołaj Troczyński   +2 more
doaj