Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
The Effect Of Endophyte-Infected Tall Fescue Seed Consumption On Gut And Satiety Hormones Related To Intake Regulation In Holstein Steers, Mindy Elizabeth King
The Effect Of Endophyte-Infected Tall Fescue Seed Consumption On Gut And Satiety Hormones Related To Intake Regulation In Holstein Steers, Mindy Elizabeth King
Theses and Dissertations--Animal and Food Sciences
Cattle consuming endophyte-infected tall fescue (E+) typically experience a syndrome termed fescue toxicosis which is thought to be caused by ergot alkaloids produced by the endophyte. The most abundant alkaloid, and considered the most likely cause of the syndrome, is ergovaline (ERV). During fescue toxicosis, a decrease in ADG is observed which is likely due to the decrease in DMI commonly observed in animals consuming E+ compared to animals consuming non-endophyte-infected tall fescue (E-). However, the cause of the decrease in intake is not well elucidated. Many physiological responses control feed intake including, but not limited to, physical, neural, metabolic, …
Impact Of Mineral Supplementation On Intake Behavior And Blood Flow In Growing Beef Cattle Exposed To Fescue-Derived Alkaloids, Hannah Marie Herzing
Impact Of Mineral Supplementation On Intake Behavior And Blood Flow In Growing Beef Cattle Exposed To Fescue-Derived Alkaloids, Hannah Marie Herzing
Theses and Dissertations--Animal and Food Sciences
Consumption of endophyte-infected tall fescue by cattle has repeatedly been shown to negatively impact dry matter intake (DMI), growth rate, and circulating prolactin concentrations. The objective of the current study was to determine if a mineral supplementation would mitigate the negative effects of fescue-derived alkaloid consumption on feed intake, circulating prolactin, and the vascular system. Twelve Angus crossbred steers were used in a triplicated Latin square design consisting of three 28 d experimental periods. Treatments consisted of three top-dressed mineral supplements (142 g/head/d): a non-medicated control (CON), commercially available Fescue EMT® Mineral Defense (EMT), and a test prototype (EMT 2). …