Claim · model-written summary
The E + TF seed challenge induced prolactin depression at day 7 (−35.5%) relative to baseline in 0% RC steers.
- Taxon
- tall fescue
Lolium arundinaceume1 - Treatment
- E + TF seed challengee2
- Interactor
- Endophytee1symbiont
- Outcome
- prolactin depressione2
- Direction
- inducede2
- Value
- −35.5%e2
- Qualifier
- d7e2
- Comparator
- baselinee2
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“Endophyte-infected tall fescue (E + TF) can cause persistent vasoconstriction in ruminants and consequently fescue toxicosis”
e2“The E + TF seed challenge induced vasoconstriction (d1: −54.6%, d7: −26.8%, d14: −80.1%, relative to baseline) and prolactin depression (d7: −35.5%, d14: −83.3%, relative to baseline) in 0% RC steers”
Title
Brittany E. Davis; Tracy A. Hamilton; John T. Johns; et al. Animal Feed Science and Technology 2022. doi:10.1016/j.anifeedsci.2022.115523
Other claims from this paper (14)
- Intervention effect The E + TF seed challenge induced vasoconstriction at day 1 (−54.6%) relative to baseline in 0% RC steers.
- Intervention effect The E + TF seed challenge induced vasoconstriction at day 7 (−26.8%) relative to baseline in 0% RC steers.
- Intervention effect The E + TF seed challenge induced vasoconstriction at day 14 (−80.1%) relative to baseline in 0% RC steers.
- Intervention effect The E + TF seed challenge induced prolactin depression at day 14 (−83.3%) relative to baseline in 0% RC steers.
- Intervention effect The 10% RC mineral alleviated vasoconstriction, with CAA 37.4% higher than in 0% RC steers.
- Intervention effect The 15% RC mineral alleviated vasoconstriction, with CAA 29.7% higher than in 0% RC steers.
- Intervention effect The 20% RC mineral was most effective on day 14, with CAA 56.9% higher than in 0% RC steers.
- Intervention effect The 10% RC mineral alleviated prolactin depression, with prolactin 125.3% higher than in 0% RC steers.
- Intervention effect The 15% RC mineral alleviated prolactin depression, with prolactin 132.1% higher than in 0% RC steers.
- Intervention effect The 20% RC mineral was most effective on day 14, with prolactin 149.2% higher than in 0% RC steers.
- Observation All treatments fully recovered (above baseline) by the end of the withdrawal period.
- Observation A treatment by sample day interaction was significant for CAA (P = 0.0051).
- Observation A treatment by sample day interaction was significant for prolactin (P = 0.0148).
- Recommendation Loose mineral amended with red clover could be used to prevent adverse effects of fescue toxicosis in endophyte-infected tall fescue grazing livestock.