Results 41 to 50 of about 1,790 (189)

Publisher's Report 2022: Vadose Zone Journal

open access: yes, 2023
Vadose Zone Journal, Volume 22, Issue 3, May/June 2023.
wiley   +1 more source

Gene expression profiling indicates a shift in ammonia assimilation capacity along the hepatic acinus induced by different forms of selenium in vitamin–mineral mixes fed to beef steers grazing on toxic endophyte-infected tall fescue

open access: yesFrontiers in Animal Science, 2023
Recently, we demonstrated that supplementing (with 3 mg Se per day) the diets of growing beef steers grazing on Se-deficient toxic endophyte-infected tall fescue-based forage with either organic Se (OSe, SEL-PLEX) or a 1:1 blend (MIX) of OSe and ...
Yang Jia   +2 more
doaj   +1 more source

Cost-benefit Analysis of a Genetic Marker on Cow-calf Operations Differentiated by Pasture and Breed [PDF]

open access: yes, 2017
Genetic sequencing in beef cattle (Bos taurus L.) is expected to aid producers with selecting breeding stock. Using data from experimental trials conducted with Angus, Brahman, and their reciprocal cross, the single nucleotide polymorphism (SNP) P450 ...
Crystal, Josh C.   +3 more
core   +2 more sources

A comparison of four methods for determining pasture botanical composition

open access: yesGrassland 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   +4 more
wiley   +1 more source

Steer stress response as affected by genotype and transportation [PDF]

open access: yes, 2014
Bovine cytochrome P450 3A28 is responsible for metabolizing ergot alkaloids that cattle ingest when feeding on endophyte-infested tall fescue grass. The objective of this research was to determine associations among genotype, transportation, and stress ...
Coffey, Ken   +5 more
core   +2 more sources

Recovery of Yearling Calves from Fescue Toxicosis [PDF]

open access: yes, 2023
Tall fescue (Lolium arundinaceum (Schreb.) S.J. Darbyshire) is widely utilized for grazing in the transition zone between the temperate and subtropical regions of the eastern U.S.A. Cattle grazing tall fescue frequently exhibit fescue toxicosis, a malady
Aiken, G. E.   +3 more
core   +1 more source

Serotonin receptor‐mediated vasorelaxation occurs primarily through 5‐HT4 activation in bovine lateral saphenous vein

open access: yesPhysiological Reports, Volume 12, Issue 13, July 2024.
Abstract To better understand mechanisms of serotonin‐ (5‐HT) mediated vasorelaxation, isolated lateral saphenous veins from cattle were assessed for vasoactivity using myography in response to increasing concentrations of 5‐HT or selective 5‐HT receptor agonists.
Ronald J. Trotta   +2 more
wiley   +1 more source

Endophyte-Infected Tall Fescue Affects Rumen Microbiota in Grazing Ewes at Gestation and Lactation

open access: yesFrontiers in Veterinary Science, 2020
Tall fescue (Schedonorus arundinaceus) is a cool-season perennial grass that is widely used as a forage for many livestock species including sheep.
Jianmin Chai   +8 more
doaj   +1 more source

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

open access: yes, 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

Evaluation of haematological parameters in haemolytic anaemia caused by tick‐borne pathogens in grazing cattle

open access: yesVeterinary Medicine and Science, Volume 10, Issue 3, May 2024.
In grazing Korean indigenous cattle, haemolytic anaemia caused by Theileria orientalis and Anaplasma phagocytophilum has been observed. Reticulocytosis, a marker of regeneration, was quantitatively expressed with an increase in indirect bilirubin and a decrease in haptoglobin. In addition, indirect bilirubin, L‐lactate and reticulocytes were correlated
Youngjun Kim   +8 more
wiley   +1 more source

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