Results 61 to 70 of about 1,517 (201)

Physiological responses to known intake of ergot alkaloids by steers at environmental temperatures within or greater than their thermoneutral zone

Frontiers in Chemistry, 2014
Two studies separated effects of dietary ergot alkaloids from effects of feed intake or ambient temperature on respiration rate (RR), heart rate (HR), surface temperature (ST), rectal temperature (RT), blood pressure (BP), serum hormone, and plasma ...
Joan eEisemann, Gerald eHuntington, Megan eWilliamson, Michelle eHanna, Matthew ePoore   +4 more
doaj   +1 more source

Effects of Toxic Fescue Exposure on Vaginal Microbial Communities of Crossbred Beef Cows [PDF]

, 2018
The consumption of toxic fescue by beef cattle results in several adverse physiological effects such as reduced reproductive success, severe vasoconstriction resulting in hoof sloughing, low body condition scores, hyperthermia, decreased prolactin levels,
Ratton, Abby
core   +2 more sources

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

Lolitrem B and Indole Diterpene Alkaloids Produced by Endophytic Fungi of the Genus Epichloë and Their Toxic Effects in Livestock

Toxins, 2016
Different group of alkaloids are produced during the symbiotic development of fungal endophytes of the genus Epichloë in grass. The structure and toxicity of the compounds vary considerably in mammalian herbivores and in crop pests.
Guerre Philippe
doaj   +1 more source

Infection with the fungal endophyte Epichloë festucae may alter the allelopathic potential of red fescue [PDF]

, 1999
16 páginas, 3 tablas, 2 figurasRed fescue (Festuca rubra) is a perennial grass used as both forage and turfgrass. Asymptomatic plants of this species are systemically infected by the fungal endophyte Epichloë festucae, which has a beneficial effect on ...
Vázquez de Aldana, Beatriz R., Romo Vaquero, María, García Ciudad, Antonia, Petisco, Cristina, García Criado, Balbino   +4 more
core   +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

Endophytes and heat tolerance in lambs grazing perennial ryegrass [PDF]

, 1994
Paper presented at the 56th New Zealand Grassland Association Conference, 17-20 October 1994, Hanmer Springs.Endophytes in perennial ryegrass protect their hosts against attack by Argentine stem weevil but cause adverse affects, including heat stress, in
Fletcher, LR, Markham, LJ, White, SR
core  

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

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

Epigenetic regulation of Epichloë festucae secondary metabolite biosynthesis and symbiotic interaction with Lolium perenne : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Genetics at Massey University, Palmerston North, New Zealand [PDF]

, 2017
Histone methylation is one of several epigenetic layers for transcriptional regulation. Most studies on the importance of this histone modification in regulating fungal secondary metabolite gene expression and pathogenicity have focussed on the role of
Lukito, Yonathan
core