Arterial Responses in Periparturient Beef Cows Following a 9-Week Exposure to Ergot (Claviceps purpurea) in Feed

Autor: Vanessa Cowan, Taylor Grusie, John McKinnon, Barry Blakley, Jaswant Singh
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Frontiers in Veterinary Science, Vol 6 (2019)
Druh dokumentu: article
ISSN: 2297-1769
DOI: 10.3389/fvets.2019.00262
Popis: Ergot alkaloids are vasoconstrictors frequently detected in low concentrations in livestock feed. The Canadian Food Inspection Agency permits up to 3,000 μg ergot alkaloids per kg cattle feed. The objective of this study was to examine the effects of feeding low concentrations of ergot alkaloids over 9-weeks on vascular dynamics in the caudal and internal iliac arteries of beef cows. A relationship between ergot alkaloid concentration in feed and hemodynamic changes in the caudal and internal iliac arteries was hypothesized. Periparturient beef cows were randomized into four groups and group fed mixed rations containing
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