186. Red Clover Leaf Supplementation Improves Thermoregulation in Cattle.

Clicks: 11
ID: 330395
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #725 of 847 articles by views in italian journal of animal science

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 847 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Abstract Previous research has demonstrated that flavonoid supplementation via legumes, including low levels of red clover (RC) leaf, can partially alleviate fescue toxicosis-associated vasoconstriction. However, no research has evaluated how this vasoactivity might relate to thermoregulatory capacity. Therefore, the objective was to determine if low levels of RC could improve thermoregulation with or without a fescue toxicosis challenge. Twenty-four ruminally cannulated Angus × Holstein steers (body weight [BW], block 1: n = 12; 521.0±9.1-kg and block 2: n = 12, 360.8±11.6-kg) were stratified by BW and randomly assigned to one of four treatments: 1. endophyte-free tall fescue (E-TF) seed with orchard grass (OG) control (E-OG; ground 5-mm), 2. endophyte-infected tall fescue (E+TF) seed (15 µg/kg BW ergovaline+ergovalanine) with OG control (E+OG; 25 g/head/d), E+TF seed with ground RC leaf (E+RC; 25 g/head/d RC leaf), or E-TF seed with ground RC leaf (E-RC). All steers were first adapted to their basal diet (corn silage-based diet, ad libitum) for 14-d and then were subjected to treatments for 14-d including a 7-d thermoneutral (TN) period (d-1 to 7; Temperature-Humidity Index [THI]:67) followed by a 7-d heat stress (HS) period (d-8 to 14; THI:70.3–83.5). Treatments and seed were dosed via the rumen cannula daily prior to feeding (0730-h). On the last day of the adaptation period (baseline) and daily thereafter, caudal artery hemodynamics using color Doppler ultrasonography, rectal temperature (RT), and respiration rate (RR) were collected at 1230-h. Data were analyzed using the MIXED procedure with repeated measures of SAS (v.9.4). At baseline, RR was 50 breaths/min and RT was 38.5 ˚C. By d-4 of the TN period and for the remainder of the study, caudal artery luminal areas were greater and blood flow rate were faster in both RC treatments than E+OG, with E-OG being intermediate (P < 0.01). The E+OG steers had greater RT (+0.3˚C) and RR (+13 to 19 breaths/min) in comparison with all other treatments, by d-5 and 6 of the TN period, respectively (P < 0.05). During the HS period, RT and RR increased in all treatments, peaking on d-13 (P < 0.05). On d-10 to 14 of the HS period, RT was highest in E+OG (39.8 to 40.3 ˚C), lowest in both RC treatments (-0.7 to -1.2 ˚C, relative to E+OG), and intermediate in E-OG (-0.4 to -0.7 ˚C, relative to E+OG) (P < 0.05). Similarly, RR was highest in E+OG (83 to 143 breaths/min), lowest in E-RC and E+RC (-35 to -45%, relative to E+OG), and intermediate in E-OG (-18 to -31%, relative to E+OG), over the entire HS period (P < 0.05). In conclusion, supplementation of 25-g of red clover leaf daily altered arterial hemodynamics and improved thermoregulation in steers with or without fescue toxicosis challenge.
Reference Key
openalex_W7214747721 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Brittany E Davis, Jennifer R Weinert-Nelson, Ronald J Trotta, Alayna A. Jacobs, Alysa M Farrell
Are you one of these authors? Claim your profile
Journal italian journal of animal science
Year 2026
DOI
10.1093/jas/skag272.268
URL
https://doi.org/10.1093/jas/skag272.268
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.