Abstract
Effects of dietary energy level and intake of corn by-product-based diets on antibody production, acute phase protein response, stress, and immunocompetency of healthy and morbid newly received growing cattle were evaluated. Four dietary treatments were formulated to supply 0.99, 1.10, 1.21, and 1.32 Mcal NEg/ kg DM and were offered at 100%, 95%, 90%, and 85% of ad libitum based on 0.99/100 treatment intake, respectively. Thirty-two pens were utilized with approximately 12 animals/pen. Four animals from each pen (32/dietary treatment) were randomly selected and used to serve as a subset to monitor immune function and acute phase proteins following a split-plot design. In addition, two animals were randomly and independently selected from each pen (16/dietary treatment) and used to measure fecal cortisol metabolite. Additionally, animals removed from the pen one (M1), two (M2), or three (M3) times and classified as morbid were bled in conjunction with a healthy control (H) removed at the same time and the serum analyzed for the same parameters. A quadratic response to time (P < 0.01) was detected for haptoglobin concentrations and for antibody titers for bovine viral diarrhea type 1 (BVD-I) and infectious bovine rhinotracheitis ...Continue Reading
References
Sep 1, 1984·Journal of Animal Science·F BlechaJ G Riley
May 1, 1997·Clinical and Diagnostic Laboratory Immunology·R W FultonM L Frey
Jun 2, 2000·Frontiers in Bioscience : a Journal and Virtual Library·M A Pahlavani
Mar 7, 2001·Applied Animal Behaviour Science·O AndradeC S. Galina
Mar 10, 2001·Journal of Dairy Science·K H PerkinsJ L Burton
May 29, 2002·General and Comparative Endocrinology·Catherine J MorrowLindsay R Matthews
Jun 21, 2002·Veterinary Clinical Pathology·Joseph E. SmithGordon A. Andrews
May 2, 2003·Journal of Animal Science·J P SchoonmakerS C Loerch
Mar 23, 2004·Journal of Animal Science·B A BerryM Montelongo
May 4, 2004·Research in Veterinary Science·M-F HumbletJ-M Godeau
Nov 13, 2004·Journal of Animal Science·S P MontgomeryJ J Higgins
Mar 22, 2005·Journal of Dairy Science·G N GozhoK M Wittenberg
Mar 17, 2009·Journal of Animal Science·J T RichesonC A Jones
Sep 22, 2011·Journal of Animal Science·C BourguetE M C Terlouw
Jan 25, 2013·Journal of Animal Science·J D ArthingtonG C Lamb
May 10, 2013·Journal of Animal Science·D R TollesonM T Longnecker
Dec 4, 2015·Animals : an Open Access Journal From MDPI·Yi ChenPhilip Griebel
Aug 23, 2016·PeerJ·Wael M El-Deeb, Ahmed M Elmoslemany