Effects of postweaning supplementation of immunomodulatory feed ingredient on circulating cytokines and microbial populations in programmed fed beef heifers

• Published in: Journal of animal science Vol. 100; no. 1
• Main Authors: McCarty, Keelee J, Tipton, Jessie E, Ricks, Ralph E, Danielo, Jessica, Thompson, Jesse S, Block, Elliot, Pratt, Scott L, Long, Nathan M
• Format: Journal Article
• Language: English
• Published: US Oxford University Press 01.01.2022
• Subjects: Animal Feed - analysis; Animals; Cattle; Cytokines - genetics; Diet - veterinary; Dietary Supplements; Escherichia coli; Female; Housing and Management; cytokine; cortisol; microbial populations; beef heifer; immunomodulatory

Abstract The objective was to determine the effects of an immunomodulatory feed ingredient following weaning on cytokine expression and fecal microbial populations of heifers. Commercial Angus heifers (n = 72) were weaned (227 ± 7 d of age), blocked by BW (n = 9 blocks), and randomly assigned to one...